Control with servo feedback based on allocated scanning tracking beam in display systems with scanning beams and light-emitting screens

FIELD: physics.

SUBSTANCE: one tracking beam and excitation beam are turned on a screen which emits visible light when excited by light of the excitation beam, and optical matching of the excitation beam is controlled based on the position of the tracking beam on the screen through control with servo feedback.

EFFECT: controlling spatial matching of spatial positions of optical pulses in an excitation beam on a screen.

15 cl, 38 dwg

 

Priority claim and the related patent application

This application claims the priority and benefits of the patent application U.S. No. 11/769580 "Servo Feedback Control Based on Invisible Scanning Servo Beam in Scanning Beam Display Systems with Light-Emitting Screens", filed on 27 June 2007. The content of the patent application U.S. No. 11/769580 included here by reference as part of the description of this application PCT.

The technical field to which the invention relates

This patent application relates to display systems with scanning beams.

The level of technology

In the display system (imaging) scan beams of the optical beam can be deployed across the screen, forming thereon the image. In many systems, the formation of the image, such as a laser display system, use the polygon scanner with many reflecting facets to provide horizontal scanning and vertical scanning mirror, such as mirror galvanometer actuator, to provide vertical scanning. In the process of functioning of one facet of the polygon scanner scans one horizontal line when the rotation of the polygon scanner to change the orientation and position of the face, and the next facet scans the next horizontal line. Horizontal scan and vertical the scanning synchronized with each other to project images on the screen.

The invention

In this patent application, among other things, describes embodiments of the systems and display devices on the basis of the scanning light beam on the light-emitting screen, and optical excitation. In the described display systems use light-emitting screens with optical excitation and at least one optical beam excitation to excitation of one or more light-emitting materials on the screen, which emit light, forming an image. For such display systems described mechanisms servo control (servo drives), which are based on the use of a dedicated servo beam unfolding on the screen in the same scanning module, which expands or scans the optical beam excitation, bearing the image. This dedicated servo beam is used to provide control with servo feedback scanning beam of excitation to provide the necessary optical alignment and accurate filing of the optical pulses in the beam of excitation during normal display mode. In some embodiments of concurrent sweep across the screen multiple laser beams of excitation it is possible to use multiple lasers. For example, multiple laser beams can simultaneously irradiate one screen the segment and sequentially scanning multiple display segments for testing the entire screen.

In one implementation, display system with scanning beams includes a light module for directions and scan at least one beam excitation with optical pulses that carry visual information, and at least one servo beam with the wavelength different from the wavelength of the beam of excitation; a screen positioned to receive the scanning beam of excitation and witness beam, and containing a light-emitting layer of parallel light-emitting stripes which absorb light beam of excitation radiation of visible light to create images, which carries the scanning beam of excitation, and a screen configured to reflect light of the witness beam in the direction light module for generating a light signal servo feedback; and module optical tracking sensor, positioned to receive the light signal tracking feedback and create a signal servo feedback indicating the positioning of the servo beam on the screen. The light module responds to the positioning of the servo beam on the screen using the servo signal feedback to adjust the timing of the optical pulses transmitted scanning beam of excitation, to control the spatial alignment of spatial positions of the optical impul the owls in the beam of excitation on the screen.

For example, the screen in the above-described system may include a label servo feedback, which have a face facing to the light excitation source, which reflect the light of the servo beam, and the area outside labels witness feedback, which diffusely reflect the light of the servo beam. In this example, the system includes a Fresnel lens located between the screen and the light module, for directing a scanning servo beam and the beam of excitation in such a way that they are in fact perpendicular to the screen. The Fresnel lens has an optical axis symmetrically in the center of the Fresnel lens, which is parallel to the optical axis of the light module and offset it to direct the light of the servo beam, which is mirrored label servo feedback on optical tracking sensor, when the light of the servo beam is diffusely reflected by the screen outside of the label servo feedback, distributed by the Fresnel lens on the area exceeding the optical tracking sensor, for directing part of the diffusely reflected light servo beam on the optical tracking sensor.

In another variant implementation of the method of controlling the display system with scanning beams includes: a scan of one or more beams of excitation modulated optical pulses is to transfer the images on the screen, for excitation of parallel light-emitting stripes radiating visible light that forms the image; a scan on the screen of the witness beam on the optical wavelength different from the optical wavelength of one or more beams of excitation, detection witness light beam from the screen to obtain a tracking signal (zerosignal)indicating the positioning of the servo beam on the screen; and, in accordance with the positioning of the servo beam on the screen, managing one or more scanning beams of excitation to control the spatial alignment of spatial positions of the optical pulses in each beam excitation on the screen.

In another implementation, display system with scanning beams includes an excitation light source for forming at least one beam excitation with optical pulses that carry visual information; source tracking light to generate at least one servo beam at the wavelength of the tracking beam, which is invisible; the module scan beam for receiving the beam of excitation and tracking beam and a scanning beam of excitation and tracking beam; and a light-emitting screen, positioned to receive the scanning beam of excitation and witness beam. The screen includes a light-emitting region, which contains: (1)the parallel light-emitting stripes, which absorb light beam of excitation radiation of visible light, creating an image that carries the scanning beam of excitation; and (2) the separator strips, parallel light-emitting stripes, which are spatially interspersed with them, and each separator strips located between two adjacent strips. Each separator strips is optically reflective. Optical tracking sensor positioned to receive light of the witness beam, split screen, including light reflected by the separator strips, and generate a control signal indicating the positioning of the servo beam on the screen. This system includes a control unit, capable, in accordance with the positioning of the servo beam on the screen to set up synchronization of optical pulses, which are carried by the scanning beam of excitation in response to the control signal on the basis of the relationship between the tracking beam and the beam of excitation, to control the spatial alignment of spatial positions of the optical pulses in the beam of excitation on the screen.

According to another implementation variant, the display system with scanning beams includes a light-emitting screen containing a light-emitting region, which contains: (1) the parallel light-emitting stripes which absorption of the t excitation light to emit visible light, and (2) the optical reflecting the separator strips, parallel light-emitting stripes and spatial interspersed with them, and each separator strips located between two adjacent strips. Provided by the laser excitation to generate laser beams of excitation and at least one source tracking light, fixed in position relative to the laser excitation to generate at least one servo beam at the wavelength of the tracking beam, which is invisible. The system also includes a module scan beam for receiving the laser beams of the excitation and the witness beam and scanning laser beams of excitation and tracking beam; at least one first optical tracking sensor (SERVOMATIC)located to receive light of a laser beam excitation reflected from the screen, to generate the first control signal indicating the positioning of the servo beam on the screen; at least one second optical tracking sensor(SERVOMATIC)located to receive light of a laser beam excitation reflected from the screen, to create a second control signal indicating the positioning of each laser beam excitation on the screen; the control unit is able, in accordance with the first and second control signals to set up the sync op is practical impulses, incurred by each laser beam excitation, on the basis of the relationship between the tracking beam and each laser beam excitation, to control the spatial alignment of spatial positions of the optical pulses in the beam of excitation on the screen.

According to the following variant of the invention a method of controlling the system otobrajenie with scanning beams includes scanning at least one beam of excitation modulated optical pulses on the screen with parallel light-emitting stripes, where the direction of sweep of the beam perpendicular to the light-emitting stripes, for excitation of the fluorescent stripes to emit them visible light that forms the image. The screen contains the separator strips, parallel light-emitting stripes and spatial interspersed with them, and each separator strips is between two adjacent strips and each separator strips is optically reflective. This method also includes scanning servo beam, which is invisible, together with the beam of excitation on the screen; detecting light scanning servo beam on the screen, including the light created by the separator strips, for receiving the control signal indicating the positioning of the servo beam on the screen; and, in accordance with positionyou the receiving servo beam on the screen, configuring synchronization of optical pulses, which are carried by the scanning beam of excitation, on the basis of the relationship between the tracking beam and the beam of excitation to control the spatial alignment of spatial positions of the optical pulses in the beam of excitation on the screen.

These and other examples and the embodiments described in the detailed description, the drawings and in the claims.

Brief description of drawings

Figure 1 - example of a display system with a laser scanning with a light-emitting screen, made of light-emitting materials excited by a laser (e.g., phosphors)that produce light of different colors when excited by a scanning laser beam that carries the information of the image to be displayed;

Figa-2B is one of the exemplary display structures with parallel light-emitting stripes and the structure of the color pixels on the screen of figure 1;

Figure 3 - example of an implementation of the laser display system of figure 1, with lots of lasers, rails a lot of laser beams on the screen where the scan configuration involves performing a sweep of the rays before they pass through the lens.

4 is an exemplary implementation of a display system based on the laser display system of figure 1, where the scan configuration provides done is the scan after the passage of the rays through the lens.

Figure 5 shows an example of simultaneous scanning of successive lines of scan multiple laser beams of excitation and invisible tracking beam;

Figa card provisions of the beam on the screen created by the laser array of the thirty-six laser excitation and one infrared tracking laser, when the vertical galvanic scanner and the horizontal polygon scanner are in their respective zero positions;

6 is an example display system with scanning using the control with servo feedback based on scanning servo beam;

Fig.7 is an example of a tracking detector for detecting the light signal servo feedback 6;

Fig and 9 are two examples of the screen for the tracking control based on a scanning servo beam;

Figure 10 - optical power of the witness beam with optical signals corresponding to the separator strips on the screen;

11 is an example of a screen having a peripheral zone of the reference marks, which include servo reference marks, creating a light feedback signal for implementing the various functions servo control;

Fig - anchor mark the beginning of a line in a peripheral zone of the reference marks to ensure the point of beginning of the active fluorescent areas on the screen;

Fig and 14 - optical whom I power the witness of the light signal, with optical signals corresponding to the separator strips, anchor marks the beginning of the string and reference marks the end of the line on the screen;

Fig, 16 and 17 are examples of the use of the clock sampling signals for measuring the position of the separator strips on the screen using a light signal servo feedback from the beam of excitation or tracking beam;

Figa is an example of the reference labels of the vertical beam position for screen 11;

Figv and 18C - control circuit with servo feedback and its functioning when using the reference marks of the vertical beam position on Figa to control vertical position of the beam on the screen;

Fig is an example of a screen 11 with the reference mark the beginning of the string and the reference marks vertical position of the beam;

Fig - process tracking control on the basis of the witness beam, which turns together with the beam of excitation;

Fig, 22 and 23 are examples of displays with IR-label servo feedback that do not affect the amount of bandwidth ray excitation, with the ability diffuse or specular reflection at least witness rays;

Fig is an example of the design of the screen, having provided on the screen specularly reflecting infrared tag for feedback and diffusely reflecting areas outside heate what's labels for feedback;

Fig an example of a system based on the design Fig;

Fig an example of a system that integrates infrared tracking feedback and servo feedback in visible light;

Fig, 28, 29 and 30 is an illustration of aspects of the system Fig;

Fig - implementation system Fig.

Detailed description of the invention

In the examples of display systems with scanning beams, proposed in this application, used screens with light-emitting materials or fluorescent materials to emit light under optical excitation to create images, including laser systems display. You can use various examples of structures of the screen with a light-emitting or fluorescent materials. For example, in one embodiment, the implement on the screen may be formed of three phosphor of different colors, which can optically excite the laser beam to create a light respectively red, green and blue colors, suitable for forming color images, in the form of pixel dots or striped red, plennyh and blue phosphor parallel stripes.

Phosphor materials are fluorescent materials of the same type. Various described systems, devices, and functions in the examples, where the fluorescent materials used phosphors applicable to displays with screens, made of other optically excited light-emitting fluorescent materials which are not related to the phosphors. For example, materials based on quantum dots in the respective optical excitation emit light, and therefore can be used as fluorescent materials for systems in devices in this application. In particular, as materials based on quantum dots for light emission can be manufactured semiconductor structures, such as, among others, CdSe and PbS, in the form of particles with a diameter of the order of the radius of the excitation of Boron. To receive light of different colors you can use different materials based on quantum dots with different structures of the forbidden energy bands for different colors with the same luminous excitation. Some quantum dots have a size of from 2 to 10 nanometers and include dozens of atoms, for example, from 10 to 50 atoms. Quantum dots may be dispersed and mixed in a variety of materials to form liquid solutions, powders, jelly-like matrix material and solid bodies (for example, solid solutions). Films based on quantum dots or film strip can be formed on the substrate as a screen for the system or device in this application. For example, in one implementation, monopegylated three different materials based on quantum dots, which can be adapted for optical excitation of the scanning laser beam as an optical pump to create red, green and blue light, suitable for forming color images. These quantum dots can be formed on the screen in the form of pixel points on parallel lines (for example, repeating sequentially the red line of pixel points, line green pixel points and the blue line of pixel points).

In the here described examples of display systems with scanning beams for excitation of the color light-emitting material deposited on the screen to create color images using at least one scanning laser beam. Scanning the laser beam modulate to transfer images in red, green and blue colors, or other visible colors and provide control so that the laser beam excited light-emitting materials of red, green and blue images in red, green and blue colors, respectively. Thus, the scanning laser beam carrying image, but not directly creates visible light, vosprinimaemie the audience. Instead, the light-emitting fluorescent materials on the screen absorb the energy of the scanning laser beam and emit visible light in red, see the Yong and blue or other colors to create a real color images, visible to the viewer.

Laser excitation of the fluorescent materials using one or more laser beams with sufficient energy to cause the emission of light or luminescence of the fluorescent materials is one of the various types of optical excitation. In other embodiments of the optical excitation can be created by a laser light source, the energy of which is sufficient for the excitation of fluorescent materials used in the screen. Examples of the laser exciting light sources include various light-emitting diodes (LEDs), lamps and other light sources that generate light at the wavelength or spectral band, for excitation of a fluorescent material that converts light of a high energy light low energy in the visible range. Optical beam excitation that excites the fluorescent material on the screen, may have a frequency or spectral region with a higher frequency than the frequency of visible light emitted by the fluorescent material. Accordingly, the optical beam excitation may be in the violet spectral range and ultraviolet (UV) spectral range, for example, with a wavelength of less than 420 nm. In the following examples violet or ultraviolet laser beam used is raised as an example of the exciting light for the phosphor material or other fluorescent material, it can be light with a different wavelength.

Figure 1 shows an example of a display system based on a laser that uses a screen with colored phosphor stripes. In the alternative to set the screen image pixels can also use light-emitting region, divided into colored pixels. The system includes a laser module 110 to create and projected onto the screen 101 at least one scanning laser beam 120. The screen 101 are parallel to each color phosphor stripes in the vertical direction, and two adjacent phosphor stripes are made of different phosphor materials emitting light in different colors. In the above example, the red phosphor absorbs the laser light to emit red light, a green phosphor absorbs the laser light to emit green light, and blue phosphor absorbs the laser light to cure the blue light. Three adjacent color phosphor stripes are available in three different colors. Figure 1 shows the spatial color sequence of strips in the form of red, green and blue. You can also use other color sequence. The laser beam 120 has a wavelength in the band of optical absorption of the colored phosphors, and usually is the wavelength shorter than wavelengths of visible blue, green, and CR is red colors for color images. For example, the colored phosphors can absorb ultraviolet light in the spectral range below 410 nm to create the desired red, green and blue colors. The laser module 110 may include one or more lasers, such as ultraviolet diode lasers to create a beam 120, the mechanism of the scanning beam to scan the beam 120 horizontally and vertically for a single play one frame image on the screen 101, and the mechanism of the modulation signal to modulate the beam 120 to transfer information to the image channels red, green and blue colors. These display systems can be configured in the form of systems with back scan, where the viewer and the laser module 110 are located on opposite sides of the screen 101. In an alternative embodiment, these display systems can be configured in the form of systems with a forward scan, where the viewer and the laser module 110 is located at one side of the screen 101.

Examples of options for implementing the various functions, modules, and components in the display system with the scanning laser 1 described in patent application U.S. No. 10/578038 "Display Systems and Devices Having Screens With Optical Fluorescent Materials", filed may 2, 2006 (patent application U.S. No.______), patent application PCT no PCT/US2007/004004 "Servo-Assisted Scanning Beam Display Systems Using Fluorescent Screens", filed February 15, 2007 (p is patent publication number WO 2007/095329), patent application PCT no PCT/US2007/068286 "Phosphor Compositions For Scanning Beam Displays", filed on may 4, 2007 (PCT publication no WO 2007/131195), patent application PCT no PCT/US2007/68989 "Multilayered Fluorescent Screens for Scanning Beam Display Systems", filed may 15, 2007 (PCT publication no WO 2007/134329), and patent application PCT no PCT/US2006/041584 "Optical Designs for Scanning Beam Display Systems Using Fluorescent Screens", filed October 25, 2006 (PCT publication no WO 2007/050662). The contents of patent applications, which here is referred to, entirely incorporated here by reference as part of the description of this application.

On Figa shows a sample screen design 101 of figure 1. The screen 101 may include a rear substrate 201, which is transparent to the scanning laser beam 120 and converted to the laser module 110 to receive the scanning laser beam 120. In the configuration with a rear second scanning, the front substrate 202 fixed to the back substrate 201 and turned to the audience. Between the substrates 201 and 202 is a layer 203 of color phosphor strips, comprising the phosphor stripes. Colored phosphor stripes for emitting red, green and blue colors represented by the symbols "R", "G" and "B" respectively. The front substrate 202 is transparent to red, green and blue colors emitted by the phosphor stripes. The substrate 201 and 202 can be made of various materials, including glass or plastma the financial Board. The back substrate 201 can be a thin-film layer, configured to return the energy of visible light in the direction of the viewer. Each color pixel includes parts of three adjacent color phosphor stripes in the horizontal direction and the vertical size is determined by the solution of the laser beam 120 in the vertical direction. In fact, each color pixel includes three sub-pixel of the three different colors (e.g. red, green and blue). The laser module 110 simultaneously scans one horizontal line from left to right and top to bottom across the screen 101. To ensure proper coordination of the laser beam 120 and each position of the pixel on the screen 101 can provide monitoring and control of the relative position of the laser module 110 and the screen 101. In one implementation, the laser control module 110 may be arranged so as to fix it in the correct position relative to the screen 101, so that the control algorithm scan beam 120 has provided the necessary coordination of the laser beam 120 and the position of each pixel on the screen 101.

On Figa scanning laser beam 120 is directed to the green phosphor stripe in the pixel to create for him a green light. On FIGU, in addition, shows the operation screen 101, if you look at the managing- perpendicular to the surface of the screen 101. Because each colored strip has an elongated shape, the cross section of the beam 120 may have an elongated shape in the direction of the strip to provide the maximum value of the fill factor of the beam in each color band for each pixel. This can be achieved using laser module 110 is an optical element that defines the shape of the beam. The laser source used to generate a scanning laser beam that excites the luminescent material on the screen may be a single-mode laser or a multimode laser. The laser can also be single-mode in the direction perpendicular to the longitudinal direction of the phosphor stripes to provide a limited solution of the beam, the smaller the width of each phosphor strip. In the longitudinal direction of the phosphor stripes of the laser beam can have many modes to spread on a larger area than the beam propagating in the transverse direction of the phosphor stripes. The use of a laser beam to a single mode in one direction to provide a small footprint of the beam on the screen, and multiple modes in the perpendicular direction to provide a larger footprint on the screen allows you to adjust the beam shape to elongate the color subpixel on the screen and to provide enough power in the laser beam group is a rotary multiple modes that ensures sufficient brightness of the screen.

Refer now to Fig 3, which shows an exemplary embodiment of the laser module 110 of figure 1. To create multiple laser beams 312 for simultaneous scanning of the screen 101 to ensure high brightness display using laser matrix 310 with multiple lasers. For control and modulation of the lasers in the laser matrix 310 includes a controller 320 modulation signal, which provides a modulated laser beams 312 to transfer image to be displayed on the screen 101. The controller 320 of the modulation signal may include a processor, digital images, which creates a digital image signals for the three different color channels, and schema laser exciter, which generate the control signals lasers, carrier signals of digital images. Then the control signals lasers are used for modulating lasers, for example, the currents for the laser diodes in the laser matrix 310.

The scan beam can be achieved by use of a scanning mirror 340, such as a galvanometer mirror for vertical scanning and multifaceted polygon scanner 350 for horizontal scanning. For projecting scanning beams from the polygon scanner 350 on the screen 101 can use the lens 360 is the TCI. Lens 360 sweep is used to transfer images from each laser in the laser matrix 310 on the screen 101. Each reflecting different facets of the polygon scanner 350 simultaneously scans N horizontal rows, where N is the number of lasers. In the example, the laser beams are first directed to the galvanometer mirror 340, and then from the galvanometer mirror 340 on the polygon scanner 350. Then the output of the scanning beams 120 is projected onto the screen 101. On the optical path of a laser beam 312 is a module 330 of the transmitting optics for modifying the spatial characteristics of laser beams 312 and the creation of tightly stacked beam 332 for scanning galvanometer mirror 340 and the polygon scanner 350 as scanning beams 120 projected onto the screen 101, to excite the phosphors and create images by emitting a fluorescent light of different colors. Between the scanner 340 and 350 module 370 of the transmitting optics to transfer the image on the reflective surface of the reflector in a vertical scanner 340 to the corresponding reflective facet of the polygon scanner 350 to prevent the leaving of the beam through the thin line of the polygon scanner 350 in the vertical direction.

The laser beams 120 spatial unfolding on the screen 101, getting on various C is to maintain the pixels at different points in time. Accordingly, each modulated beam 120 at different points in time is the image signal for red, green and blue colors for each pixel and for different pixels at different points in time. Thus, the controller 320 of the modulation signal provides coding rays 120 using visual information for different pixels at different points in time. Thus, the scanning beam displays the image signals encoded in the time domain in the rays 120, a spatial pixels on the screen 101. For example, each of the modulated laser beams 120 may have a time interval of a color pixel, divided equally into three successive time segment for the three color sub-pixels for the three different color channels. To create the required scales of gray for each color, the right combination of colors in each pixel, and the desired brightness of the image when the modulation of the beams 120 can use the methods of pulse modulation.

In one embodiment, the implementation of many rays 120 are sent to the screen 101 by different neighboring vertical positions, and two adjacent beam are separated from each other on the screen 101 of one horizontal line of the screen 101 in the vertical direction. For a given position of the galvanometer mirror 340 and the position of the polygon scanner 350 rays 120 which may diverge relative to each other in the vertical direction on the screen 101, and may be in different places on the screen 101 in the horizontal direction. Beams 120 can cover only one area of the screen 101.

In one implementation, when the position of the galvanometer mirror 340 angle of rotation of the polygon scanner 350 causes the scan beams 120 of N lasers in the laser matrix 310 one segment consisting of N adjacent horizontal lines on the screen 101. Galvanometer mirror 340 linearly deflected to change its angle at a given speed in a vertical direction from top to bottom during the scanning polygon scanner until you scanned the entire screen 101 for creating a full screen display. When will be passed the entire range of the galvanometer vertical angular scanning galvanometer system is returned back to the upper position, and the cycle is repeated synchronously with the refresh rate of the display.

In another embodiment, the implementation of this provision galvanometer mirror 340 and the position of the polygon scanner 350 beams 120 may be inconsistent with respect to each other in the vertical direction on the screen 101, and may be located in different positions on the screen 101 in the horizontal direction. Beams 120 can cover only one area of the screen 101. In a fixed angular position of the galvanometer mirror 340 rotation of the polygon scanner 350 vesivallinaukio rays 120 of N lasers in the laser matrix 310 of one screen segment of N adjacent horizontal lines on the screen 101. At the end of each horizontal passage on one screen segment of the galvanometer mirror 340 is installed in a different fixed angular position, so that the vertical position of all N rays 120 are adjusted to scan the next adjacent display segment of N horizontal lines. This process is repeated iteratively until scanned the entire screen 101 for creating a full screen display.

In the above example display system with scanning beams, shown in Figure 3, the lens 360 scan is after devices 340 and 350 sweep of the beam, focusing one or more scanning beams 120 excitation on the screen 101. In such an optical configuration of the scanning system provides for the implementation of the sweep of the rays before they pass through the lens. In the shown design of the scanning beam directed at the lens 360 sweep, takes place in two orthogonal directions. Thus, the lens 360 sweep is designed for focusing the scanning beam on the screen 101 in two orthogonal directions. To achieve proper focus in both orthogonal directions lens 360 sweep may be composite, and often do it in the form of many elements. In one implementation, the lens 360 scan may, for example, to represent numerou the f-theta lens, designed to provide a linear relationship between the position of the focal point on the screen and the input sweep angle (theta) with the scan of the input beam relative to each of the two orthogonal axes perpendicular to the optical axis of the lens of the scanner. Two-dimensional lens 360 scan, such as a lens (f-theta), described in configuration (where the scanning beams is performed prior to their passage through the lens) can lead to optical distortion in two orthogonal directions of scanning, which causes curvature of the beam on the screen 101. The design of the lens 360 sweep may contain many elements to reduce distortions and can be very costly in manufacturing.

To avoid the above mentioned problems with distortion associated with the two-dimensional lens scan on the system where the scanning beams is performed prior to their passage through the lens, it is possible to implement a display system in which the scanning beams is performed after passing through the lens, where the two-dimensional lens 360 sweep replaced by a more simple and cheap one-dimensional lens scanner. In the Patent application U.S. No. 11/742014 "POST-OBJECTIVE SCANNING BEAM SYSTEMS", filed April 30, 2007 describes examples of systems where the scanning beams is performed after passing through the lens, suitable for use with phosphor screens described in this is the application moreover, the content of the patent application U.S. No. 11/742014 included here by reference as part of the description of this application.

Figure 4 shows an exemplary embodiment of the display system based on the design of the system of figure 1, where the scanning beams is performed after passing through the lens. To create multiple laser beams 312 for simultaneous scanning of the screen 101 in order to achieve high brightness display using laser matrix 310 with multiple lasers. The controller 320 of the modulation signal is provided to control and modulation of the lasers in the laser matrix 310, so as to modulate the laser beams 312 to transfer image to be displayed on the screen 101. The scan beam is based on a design with two scanners: horizontal scanner, such as a polygon scanner 350, and the vertical scanner, such as a galvanometer scanner 340. Each reflecting different facets of the polygon scanner 350 simultaneously scans N horizontal rows, where N is the number of lasers. Module 330 of the transmitting optics reduces the interval between the laser beams 312 to form a compact set of laser beams 332, which are distributed within the size of the facets of the polygon scanner for horizontal scanning. After the polygon scanner 350 is a one-dimensional (1-D) lens is 380 horizontal, which is the vertical scanner 340 (for example, a galvanometer mirror, which receives each horizontally expanded beam 332 from the polygon scanner 350 through 1-D lens 380 sweep and provides a vertical scan of each horizontally expanded beam 332 at the end of each horizontal sweep before the next horizontal scan, perform the following facet of the polygon scanner 350. The vertical scanner 340 sends the 2-D scanning beams 390 on the screen 101.

When using such an optical design for horizontal and vertical scanning 1-D lens 380 scanner is a polygon scanner 140, but before the vertical scanner 340, focusing each horizontally expanded beam on the screen 101, and minimizing the horizontal curvature of the image displayed on the screen 101, within a reasonable range that enables the creation of horizontal scan lines on the screen 101, visually perceived as a straight line. Such 1-D lens 380 scanner, able to create a straight line horizontal, relatively simpler and cheaper than 2-D lens scanner with the same operating characteristics. After the lens 380 scanner is a vertical scanner 340, representing a flat reflector, which simply reflects the beam onto the screen 101 and provide the characteristic vertical scan, directing each horizontally scanned beam in different vertical positions on the screen 101 for scanning different horizontal rows. The size of the reflector in the vertical scanner 340 in the horizontal direction is large enough to cover the spatial scale of each scanning beam coming from the polygon scanner 350 and lens 380 sweep. The system of figure 4 has a structure in which the scanning beams is performed after passing through the lens, since 1-D lens 380 sweep is in front of the vertical scanner 340. In this particular example, a lens or other focusing element after the vertical scanner 340 is missing.

Note that in the system in figure 4, where the scanning beams is performed after passing through the lens, the distance between the lens and sweep up space on the screen 101 for a particular beam depends on the position of the vertical scanning of the vertical scanner 340. Therefore, in the construction where a 1-D lens 380 scanner has a fixed focal distance in a straight horizontal line passing through the center of the extended 1-D lenses scan, focal characteristics of each beam should be changed depending on the position of the vertical scanning of the vertical scanner 380 to maintain the focus of the beam on the screen 101. In this connection may be implementing the van a dynamic focusing mechanism for adjusting the convergence of the beam, coming in 1-D lens 380 scanner based on the vertical position of the vertical scanning of the scanner 340.

For example, on the optical path of one or several laser beams from the lasers to the polygon scanner 350 as a mechanism for dynamic focusing, you can use a stationary lens and a lens with dynamic revolutionay. Each beam is focused by a lens with dynamic focusing at a point in front of the stationary lens. When the focal point of these lenses are the same, the light output of the lens is reduced in the parallel beam. Depending on the direction and amount of deviation between the focal points of these lenses light output collimator lens in the direction of the polygon scanner 350 can be either divergent or convergent. Therefore, adjustment of the relative positions of the two lenses along the optical axis can provide the focus adjustment of the scanning light on the screen 101. To adjust the relative position of the lenses depending on the control signal, you can use the drive lens with revolutionay. In this particular example, the actuator lens with revolutionay used to adjust the convergence of the beam directed on the 1-D lens 380 sweep along the optical path from the polygon scanner 350 synchronously with the vertical scanning of the vertical line is the first scanner 340. The vertical scanner 340 figure 4 scans with much less frequency than the first, the horizontal scanner 350, and therefore the change in focus caused by the vertical scanning on the screen 101, occurs with less frequency (frequency vertical scan). This allows the mechanism to adjust the focus in the system of figure 1, which presented a lower requirement for performance and which will operate with a relatively low frequency vertical scan, and not with a relatively high frequency of horizontal scanning.

Rays 120 on the screen 101 are in different, but adjacent vertical positions, and two adjacent beam are separated from each other on the screen 101 of one horizontal line of the screen 101 in the vertical direction. For a given position of the galvanometer mirror 540 and this provision polygon scanner 550 beams 120 can be aligned with each other in the vertical direction on the screen 101, and can be at different positions on the screen 101 in the horizontal direction. Beams 120 can cover one area of the screen 101.

Figure 5 illustrates how the above-described simultaneous scanning of one screen segment of the multiple scanning laser beams 120. Visually rays 120 behave as a brush to "Zack is asiania" one wide horizontal pass across the screen 101 at one time to cover one display segment from the leading edge to the trailing edge of the image area on the screen 101, and then "paint" another wide horizontal passage to cover the adjacent offset vertical display segment. If we assume that the laser matrix 310 contains N = 36 lasers, for full sequential scan of the screen 101 with 1080 lines will need to scan 30 vertical display segments. Thus, with this configuration, in fact, the screen 101 is divided in the vertical direction on many of the display segments, so that N of the scanning beams simultaneously scan one display segment, where each scanning beam scans one line in the display segment, and other rays other successive scan lines in the display segment. After it is scanned one display segment N of the scanning beams simultaneously moved to scan the next adjacent display segment.

In the above construction with multiple laser beams, each of the scanning laser beam 120 scans only a few lines on the screen in the vertical direction, the number of which is equal to the number of display segments. Thus, the polygon scanner 550 for horizontal scanning can work with less speed than the scanning speed required for single-beam configuration, where one beam scans each is Yu deadline around the screen. For a given total number of horizontal lines on the screen (for example, 1080 lines in the system, an HDTV (high-definition) the number of the display segments decreases with increasing number of lasers. So, when using 36 laser galvanometer mirror and, thus, the polygon scanner scan 30 lines per frame, while only 108 is scanned lines per frame with only 10 lasers. Therefore, the use of multiple lasers can increase the brightness of the image, which is roughly proportional to the number of lasers, and at the same time, you can also successfully reduce the speed of the scanning system.

Described here display system with scanning can be carried out in the manufacturing process, so that were known points in time on / off of the laser beam and the position of the laser beam relative to the fluorescent stripes on the screen 101, and to provide control within tolerance, guaranteeing the correct operation of the system with the specified image quality. However, the screen 101 and the components of the laser module 101 included in the system may change over time due to various factors such as jitter scanning device, temperature changes or humidity changes in the orientation of the system relative to the gravitational field, VI is the radio, aging and so on. These changes can affect the positioning of the laser source relative to the screen 101 in time, and therefore agreement, executed by the manufacturer, may vary due to these factors. Note that these changes can generate visible and often undesirable effects in the displayed image. For example, the laser pulse in the scanning beam 120 excitation due to misalignment of the scanning beam 120 relative to the screen in the horizontal scanning direction may not get scheduled for this laser pulse subpixel, and on the next. When this happens, the color of the displayed image deviates from the target. That is, the red pixel in the target image may be displayed on the screen as a green pixel. In another case, the laser pulse in the scanning beam 120 excitation can go as planned, and on the next subpixel following the scheduled due to misalignment of the scanning beam 120 relative to the screen in the horizontal scanning direction. When this happens, the color of the displayed image deviates from the intended color, and image quality deteriorates. The visible effects of these changes can worsen with increasing display resolution, because the smaller peaks is , the smaller the tolerance to change its position. In addition, when the screen size, the effect of a change which may affect the approval, may be more intense, because a lot of shoulder strength during each scan beam 120 excitation associated with a large screen means that the angular error can lead to large position error on the screen. For example, if the position of the laser beam on the screen at a known angle of deflection of the beam changes over time, the result will be a color change in the image. This effect may be significant that it is undesirable for the viewer.

In this description of the proposed options for implementation of various mechanisms of coordination to maintain proper termination of the scanning beam at the required subpixel to achieve the desired image quality. These mechanisms of coordination include reference marks on the screen as in the fluorescent region, and one or more peripheral areas outside the fluorescent region, where the reference marks emit visible light of red, green and blue colors by using the phosphor strips to provide light feedback signal generated by the beam 120 excitation and represents the position and other characteristics of the scanning beam on the screen. Light feedback signal can be measured put the m use one or more optical tracking sensors to generate one or more servo feedback signals, moreover, these servo feedback signals are used to create maps of red, green, and blue sub-pixels on the screen. The unit of servo control in the laser module 110 processes the specified servo feedback signal to extract information about the positioning of the beam and other characteristics of the beam on the screen, and in response adjusts the direction and other characteristics of the scanning beam 120 to ensure proper functioning of the system display.

For example, there may be provided a control system with servo feedback for use peripheral servo reference marks located outside the display area and invisible to the viewer, to ensure that control various characteristics of the beam, such as horizontal positioning in the horizontal scanning direction perpendicular to the fluorescent stripes; vertical positioning in the longitudinal direction of the fluorescent strips; focusing the beam on the screen to control the color image (for example, color saturation and sharpness of the image, and the beam power on the screen to control the image brightness and uniform brightness over the entire screen. In another example, the calibration screen can be performed at startup of the display system with the purpose of sex is to receive information about the positioning of the beam in the form of a calibration card containing the exact position of the sub-pixels on the screen in the time domain. Further, this calibration map uses the laser module 110 to control the timing and positioning of the scanning beam 120 to achieve the desired purity of color. In another example may be provided by the system dynamic servo control for the regular updating of the calibration card during normal operation of the display system by using a servo reference marks in the fluorescent screen area to provide light feedback signal, invisible to the viewer. The examples use a witness of the light signal generated by delimiters phosphor bands on the basis of the length of the excitation signal and the light signal feedback from other anchor tags for the tracking control and the screen calibration is described in patent application no PCT/US2007/004004 "Servo-Assisted Scanning Beam Display Systems Using Fluorescent Screens" (PCT publication no WO 2007/095329), the contents of which are incorporated here by reference.

The display system in this application provide mechanisms for tracking control based on a dedicated servo beam that unfolds on the screen in the same scanning module, which expands the optical beam excitation that carries the image. This dedicated servo beam is used to implemented the I control the scanning beam of excitation with servo feedback to provide the necessary optical alignment and accurate delivery of optical pulses in the beam of excitation during normal operation display. This dedicated servo beam has an optical wavelength that is different from the beam excitation. For example, this dedicated servo beam may be an infrared tracking beam, which may be the invisible man. In the examples described below, to illustrate the functions and operations performed by this dedicated servo beam is used infrared servo beam 130.

Refer to Figure 1, where the laser module 110 generates (as an example, a dedicated servo beam) invisible servo beam 130, such as an infrared beam. The laser module 110 expands the servo beam 130 on the screen 101 along with the beam 120 excitation. Unlike beam 120 excitation servo beam 130 is not modulate to transfer the image data. Servo beam 130 may be continuous (CW) beam. The separator strips on the screen 101 can be made in the form of elements reflecting the light of the servo beam 130 and generates signal light 132 feedback as a result of reflection. Servo beam 130 has a known spatial relationship with the beam 120 excitation. Therefore, the positioning of the servo beam 130 can be used to determine the position of the beam 120 excitation. This relationship between the servo beam 130 and the beam 120 excitation can be determined by using reference tracking labels, such as label start of line (SOL) in unused on what I'm viewing area of the screen 101. The laser module 110 receives and detects the light signal 132 feedback after receiving the information about the positioning of the servo beam 130 on the screen 101, and uses this position information to control the alignment of the beam 120 excitation on the screen.

Servo beam 130 is invisible to the human eye and therefore does not create any significant visual artifacts on the screen 101 during normal system operation, when the screen 101 images are created. For example, servo beam 130 may have a wavelength in the range from 780 nm to 820 nm. For security reasons, the screen 101 can be performed with a filter which prevents the passage of invisible servo beam 130 from the screen 101 from the audience. In this connection, to block the servo beam 130 and the beam 120 excitation can be used limiting absorption filter with transmission range only within the visible spectral range (for example, from 420 nm to 680 nm). Servo control beam 120 excitation on the basis of the servo beam 130 may be performed dynamically during normal operation of the system. This scheme servo control avoids manipulation of the beam 120 excitation that generates the image for surveillance operations during the normal display mode, which eliminates the appearance of any visual art is effektov, that can be related to the tracking of the manipulated beam 120 excitation that generates the image.

In addition, the scattered or reflected light of the excitation signal from the screen 101 can also be used for operations of the servo control during the period when the system does not display image, for example, during system startup, or when the beam 120 excitation is outside the active area of the display screen 101. In this case, the scattered or reflected light, marked in figure 1 as the light 122 can be used as a light signal tracking feedback for servo control, for example, the horizontal alignment or vertical alignment of each laser beam 120.

In the example system in figure 3 and 4 servo beam 130 is directed together with one or more beams 120 excitation along the same optical path, which includes a module 330A or V transmitting optics, scanners, 340 and 350 rays and the lens 360 or 380 sweep. Refer to Figure 5, where the servo beam 130 unfolds simultaneously with the scanning beams 120 excitation on one screen segment in the vertical direction of the screen. Servo beam 130 is invisible, and it can overlap the scanning trajectory of a single beam 120 excitation or distributed along its own tractor and scan which is different from the trajectory of any of the beams 120 excitation. The spatial relationship between the servo beam 130 and each beam 120 excitation is known and fixed, so that the positioning of the servo beam 130 on the screen 101 can be used for positioning of each beam 120 excitement.

Light source to create a servo beam 130 and a light source for creating a beam 120 excitation can be semiconductor lasers in the module of the light source, which may be a matrix of lasers, and at least one of the lasers in the laser matrix can be witness by the laser, creating a servo beam 130. In one embodiment, the implementation knows the location tracking of the laser with respect to each of the excitation laser in the laser matrix, laser module 110. Servo beam 130 and each beam 120 excitation are routed through the same transmitting optics, the same scanners rays and the same projection lens and projected onto the screen 101. Thus, the positioning of the servo beam 130 on the screen 101 in a known manner correlated with the positioning of each beam 120 excitation on the screen. This relationship between the servo beam 130 and the beam 120 excitation can be used to control the beam 120 excitation on the basis of the measured position of the servo beam 130. Ratio, characterized the General relative position of the servo beam 130 and each beam 120 excitation, can be measured using servo feedback, for example, during a calibration process, which can be performed separately or during phase power system. This is established by measuring the relationship describing the relative position of these rays, are used to implement control with servo feedback.

On Figa map shows the positions of the beams on the screen created by the laser array of the thirty-six laser excitation and one infrared tracking laser, when the vertical galvanometer scanner and the horizontal polygon scanner are in their respective zero positions in the system prototype, where the scanning beams is performed prior to their passage through the lens. Thirty-six laser excitation are arranged in the laser matrix h, and in the center of the laser matrix is an infrared tracking laser. The laser beams occupy on the screen size of 20 mm x 25 mm In this example, the intervals between two adjacent laser excitation vertical half pixel, and the intervals between two adjacent laser excitation horizontally are 3.54 pixel. Since the laser excitation of spatially separated in the horizontal and vertical directions, each scan in one screen segment create the em thirty-six horizontal lines on the screen occupying thirty-six pixels in the vertical direction. When the operation of the system of these thirty-seven laser beams are deployed together on the basis of the scan shown in Figure 5, for a single scanning of one screen segment to sequentially scan a different screen segments with different vertical positions to scan the entire screen. Since the position of the infrared tracking laser is fixed with respect to each of the thirty-six laser excitation, the positioning on the screen 101 servo beam 130, created infrared tracking laser, in a known manner, is associated with each spot beam 120 excitation for each of the thirty-six laser excitation.

Figure 6 shows a display system with scanning beams on the basis of the tracking control using invisible servo beam 130. To maintain the functions and logical operations management on the basis of the signals from the tracking detectors 620 radiation, which detect the tracking signal light 132 feedback from the screen 101, you can use the processor/controller 640 display. Perhaps that will be just one detector 620, but to increase the sensitivity of detection signals servo feedback you can use two or more tracking detectors 620.

And the illogical way one or more tracking detectors 630 radiation can also be used to detect a tracking signal light 122 excitation generated due to the scattering or reflection of the beam 120 excitation on the screen to give additional feedback signals to the processor/controller 640 for servo control. This use of a witness of the light signal 122 for feedback control may be an option, which is used in conjunction with control with infrared tracking feedback. In some embodiments of the system for matching the beam 120 excitation to the desired phosphor stripes on the screen 101 may be sufficient to only one infrared tracking feedback without feedback based on the light signal 122 feedback, shown in Fig.6. The examples use a witness of the light signal 122 generated by delimiters phosphor stripes for servo control described in patent application no PCT/US2007/004004 "Servo-Assisted Scanning Beam Display Systems Using Fluorescent Screens" (PCT publication no WO 2007/095329), the contents of which are incorporated here by reference.

Figure 6 for pitch and projection on the screen 101 of the witness beam beam 120 and 130 excitation module provides 610 projection scanner. Module 610 may have a configuration where the scanning beams is performed after the por is walking through the lens, or configuration, where the scanning beams is performed prior to their passage through the lens. As shown in Fig.6, the image data are fed into the processor/controller 640 display, which generates a data signal of the image bearing image data, the controller 520 modulation signal for the laser 510 excitation. Witness the laser in the laser excitation in the matrix 510, is not modulated to transfer the image data. The controller 520 modulation signal may include circuit of the exciter laser, which generate the modulation signals carrying the image signals from the image data intended for different lasers 510, respectively. Further, the control signals lasers are used for modulation of the lasers in the laser matrix 510, for example, the currents for the laser diodes to generate laser beams 512. The processor/controller 640 display also generates the control signals lasers for lasers in the laser matrix 510 to adjust the orientation of the laser to change the vertical position of the beam on the screen 101 or the power level constant current of each laser. The processor/controller 640 display additional signals to control the scanning module 610 projection scanner to control and synchronize the horizontal polygon scanner and the vertical scanner.

7 on the azan one example of the design of the tracking detector, where the witness detector 620 detects the light signal 132 servo feedback. The tracking detector 620 may be a detector, sensitive to light with a wavelength of invisible servo beam 130 and less sensitive to other light, such as visible light and signal light excitation. For filtering light from the screen 101 with the aim of selective transmission of a light signal 132 servo feedback with simultaneous blocking of the signal light at other wavelengths, such as light excitation signal and visible light, it is possible to use an optical filter 710. This filter allows you to use as a tracking detector optical detectors over a wide range. Figure 7 also shows the optional tracking detector 630 for detecting a light signal 122 witness feedback on the wavelength of excitation. The tracking detector 620 may be the detector is designed so that it will be sensitive to the light signal with the wavelength of the beam 120 excitation and less sensitive to the light signal on the wavelength servo beam 130 and the visible light emitted by the screen 101. Optical filter 720 can be used to filter light from the screen 101 for selective transmission of a light signal 122 servo feedback with simultaneous excitation is legirovaniem light at other wavelengths. Signals 721 and 722 from the tracking detectors 620 and 630, respectively, are sent to the processor/controller 640 to perform tracking control.

On Fig and 9 show two exemplary configurations for screen 101, providing a light signal 122 and 132 feedback. On Fig each separator 810 bands made in the form of optical reflector tracking beam and the beam of excitation, so that this reflection can be used as a light signal 132 feedback. The separator 810 strips can also be designed as a reflector, opaque to light, the optical isolation of the adjacent light-emitting stripes to increase contrast and reduce crosstalk. Light-emitting stripes, such as phosphor stripes that emit red, green and blue light, worse than reflect a tracking beam and the beam of excitation than the separator 810 strips, so that the light signal 132 feedback takes the maximum value each time the witness beam or beam excitation 130 pass through the separator 810 bands. Each separator strips on the side of the viewer can be applied layer 820, absorbing black color to reduce adviceline ambient light to the viewer. Figure 9 shows another configuration of the screen, where reflecting servo reference mark 910 is formed on the side of the excitation of each section of the body 901 of the bands for example, the reflective coating of the strip.

During each horizontal scan beam 120 or 130 is deployed through the light-emitting stripes, and reflected light signals generated by the separator strips, can be used to specify the horizontal positions of the separator strips, spacing between two adjacent delimiters strips and horizontal positions horizontally expanded beam 120 or 130. Thus, reflected light signals from the divider strips can be used to servo control the horizontal alignment of the beam 120 relative to the light-emitting stripes.

Figure 10 shows how the separator strips act as reference marks of approval. When the horizontal scanning servo beam 120 or 130 on the screen 101 light of the servo beam has low power when the servo beam 130 falls on the light-emitting strip, and has high power, when the witness beam reaches the separator strips. When the spot of the servo beam 130 on the screen 101 is smaller in width than one subpixel, the capacity of the witness beam is changed periodically during each horizontal scan, and the peak power corresponds to the separator strips. This principle can be used for measuring the position of the separator strips or width of each separator strips on the basis of clock cycles of the clock with the persecuted in the processor/controller 640. This measurement information is used to update the map of the provisions of each beam 120 excitation in the horizontal scan. When the spot of the servo beam 130 is larger than the width of the subpixel, but less of one color pixel is composed of three adjacent sub-pixels, the power tracking signal light 132 continues to change on a periodic basis in each horizontal scan, and the peak power corresponds to one color pixel, and therefore, it can be used for servo control.

In addition to the separator strips that are used as reference marks of approval on the screen 101, you can implement additional anchor tag negotiation to determine the relative position of the beam and screen, as well as other parameters of the beam of excitation on the screen. For example, during the horizontal sweep of the beam of excitation and witness beam through the light-emitting stripes may be provided to mark the beginning of the string for the system to determine the start of the active light-emitting region of the display screen 101, so that the system controller modulation signal can correctly control the timing of when applying optical pulses on the identified pixels. The system may also be provided to mark the end of the line to determine the end of the active light-emitting region display the help screen 101 during the horizontal scan. In another example, the system may provide a vertical reference mark approval to determine whether induced scanning beams in the correct vertical position. Other examples of reference marks can be one or several reference marks for measuring the size of the beam spot on the screen and one or more reference marks on the screen to measure the optical power of the beam 120 excitation. These reference marks can be located in the area outside the active fluorescent screen area 101, for example, in one or more peripheral zones of active fluorescent screen area and be used for beam excitation, and for the witness beam.

Figure 11 shows one example of a fluorescent screen 101 having a peripheral zone with the reference marks. The screen 101 includes a Central light-emitting region 1100 display with parallel fluorescent stripes to display images and two peripheral zones 1110 and 1120 with reference marks that are parallel to the fluorescent stripes. Each of the peripheral area with the reference marks can be used to provide different reference marks for screen 101. In some implementations, when a horizontal scan through the fluorescent bands is carried out in the field 1100 from left to right, provided only the left periphery the nye area 1110 of the reference marks without the second zone 1120.

This peripheral zone labels on the screen 101 allows the display system with scanning to control certain operating parameters of the system. The anchor tag in the peripheral zone of the reference marks can be used for the operation of servo control based on the light signal 132 servo feedback generated from the servo beam 130. When the light signal 122 servo feedback generated from the beam 120 excitation, is also used for the operation of servo control, the anchor tag in the peripheral zone of the reference marks can be used for the operation of servo control based on the light signal 122 servo feedback. The anchor tag in the peripheral zone of the reference marks can be used in some warrants implementation to measure both the beam 120 excitation and servo beam 130 for operation of servo control. Description of various examples of the reference marks, the following in particular may relate to a beam 120 excitation, and similar functions can be used in connection with the servo beam 130.

Note that the reference label in the peripheral zone of the reference marks is outside the active region 1100 is displayed on the screen 101, and therefore the corresponding function control with servo feedback can be performed outside the time frame of the operation display when the beam of excitation RA is varchives active fluorescent region 2600 display to display the image. Thus, the dynamic tracking control can be implemented without affecting the process of displaying images to the viewer. In this regard, each scan may include the period of continuous mode, when the beam of excitation takes place in the peripheral area of the reference tags for dynamic tracking and management, and period of display mode when the modulation of the beam of excitation to generate optical pulses that carry image, and the beam of excitation takes place by active fluorescence region 1100 display. Servo beam 130 is modulated to transfer the image data, and therefore, when falling on the screen 101 it may be a continuous beam with constant power. The power of the reflected servo light in the light signal 132 feedback modulates the reference marks and the separator strips and other characteristics on the screen 101. The modulated power of the reflected servo light signal can be used to measure the position of the servo beam 130 on the screen 101.

On Fig shows an example of the reference marks 1210 start of line (SOL) in the left peripheral zone 1110 on the screen 101. Reference label SOL 1210 may be a reflecting, scattering or fluorescent strip parallel to the fluorescent stripes in the active light-emitting area 1100 screen 01. Reference label SOL 1210 locked in position being a known distance from the first fluorescent bands in the area 1100. In some embodiments of the configuration of the SOL may constitute a reflective strip, but in other implementations may include multiple vertical lines with equal or variable intervals between them. Many of the lines are chosen with a surplus, which allows to increase the signal-to-noise, precision measurement of the position (time) and provides detection (prevents skipping) missing pulse.

In the process of scanning beam 120 excitation unfolds on the screen 101 from left to right, first passing through the peripheral area 1110 of the reference marks, and then through the core 1100. When the beam 120 is located in a peripheral zone 110 of the reference marks, the controller signal modulation in the laser module 110 of the system translates the beam 120 in a mode that provides an adequate discretization of information without crosstalk (for example, one beam at an interval of one frame). When the scanning beam 120 excitation passes through the anchor tag SOL 1210, the light reflected, scattered or emitted by the reference label SOL 1210 due to its irradiation beam 1210 excitation can be measured by the optical detector SOL, located next to the reference mark SOL 1210. Alicelove signal specifies the location of the beam 120. The optical detector SOL can be fixed in some place in the area of 1110 on the screen 101 or outside of the screen 101. Thus, the anchor tag SOL 1210 can be used for periodic configuration negotiation during the life of the system.

When the detection pulse from the label SOL 1210 for a given beam excitation laser, after a delay, representing the time required to scan the beam from the label SOL 1210 with the left edge of the active region 1100 of the display means in a display mode in which the transfer of optical pulses with image data. The system then requests the previously measured value of delay from the pulse SOL prior to the field 1100 of the image. This process can be implemented during each horizontal scan to ensure that each horizontal line properly began with the image area, and the optical pulses during each horizontal scan were aligned to the light-emitting stripes. Before image formation for the line in the area of 1100 on the screen 101 are corrected, so that there is no time delay when displaying images caused by servo control. This allows correction of both high-frequency (up to the frequency of scanning lines)and low-frequency errors.

Witness the Uch 130 can be used to provide a reference point position of each beam 120 excitation to control how the synchronization of the start pulse, bearing the image before the beam of excitation will be included in the active light-emitting region 1100, and during normal display, when the beam 120 excitation takes place in the active light-emitting region 1100. On Fig shows the detected power of the light signal at wavelength servo beam in the optical signal 132 feedback for the demonstration of optical signals indicating the position of the mark SOL and separator strips on the screen 101. Optical peaks in the light feedback signal, shown in Fig and 14, idealizirovany being presented in the form of narrow rectangular signals that are rear and front edges, shown in Fig and 16. The specified pulse signal from the back and front fronts can be converted into pulse signals having a shape close to a square, the track edges.

By analogy with the label SOL 1210 on the opposite side of the screen 101 can be implemented anchor tag end of line (EOL), for example, in the peripheral zone 1120 reference labels figure 11. Label SOL is used to ensure the correct matching of the laser beam relative to the beginning of the image area. This does not guarantee proper coordination during the horizontal scan, as may be positioning errors on the screen. The anchor tag EOL and optical detec the EOS end-of-line zone 1120 can be used for linear two-point position adjustment of the laser beam in the image area. On Fig shows the detected power of the light signal at wavelength servo beam in the optical signal 132 feedback for the demonstration of optical signals indicating the position on the screen 101 label SOL, dividers bands and labels EOL.

When used as labels SOL and EOL labels, laser continuously on continuous wave (CW) until reaching the zone of the sensor EOL. When the detection signal EOL laser can return to the create images, and then performs the necessary calculations for the correction of synchronization (or scan rate) based on the time difference between pulses SOL and EOL. This correction is applied for the next one, or more rows. To reduce noise measurements of moments of time from SOL to EOL for multiple lines can be averaged.

On the basis of the separator strips and peripheral reference marks SOL/EOL can be measured position servo beam 130 on the screen 101. Since the servo beam 130 has a fixed relationship with each beam 120 excitation, which can be installed by measurements on the reference label SOL or anchor tag EOL, any error in the positioning of the servo beam 130 will cause a corresponding error in each beam 120 excitation. Thus, information about the positioning of the servo beam 130 can be used when tracking control is the research Institute for the control of servo beam 130 and each beam 120 excitation to reduce the consistency error of the beam excitation.

Described herein servo control provides the location of each optical pulse in the beam 120 excitation near or in the center of the planned light-emitting stripes to the excitation light-emitting material in this band without affecting the adjacent light-emitting stripes. Servo control can be implemented in such a way that the specified management agreement was achieved by the synchronization control of each optical pulse so that each pulse was in the desired position on the screen 101 during the horizontal scan. Accordingly, the funds tracking control, that is, the processor/controller 640 must have information about the horizontal positions of the light-emitting stripes in each horizontal line in front of each horizontal scan, in order to control the timing of optical pulses during a scan. This information about horizontal positions of the light-emitting stripes in each horizontal row forms a two-dimensional "map" of the provisions of the active area of the display or light-emitting area of the screen 101 with coordinates (x, y), where x is the horizontal position of each separator strips (or, equivalently, the horizontal position of the center of each strip), and y is the vertical position or the identification number of the horizontal scan. Specified cards the provisions for the screen 101 can be obtained by measurements on the manufacturer, and it can change over time due to changes in the system components due to temperature, aging and other factors. For example, the effects associated with thermal expansion and distortion in optical imaging system will require the appropriate synchronization settings to activate each pixel color. If the activation of the laser does not match the synchronization with the beam direction in the Central part of the sensor or on the strip for the intended phosphor beam 120 is partially or fully activates the phosphor is not the color that you want. In addition, the aforementioned map of provisions for the screen 101 may vary from system to system due to tolerances in components and devices during manufacture.

Thus, it is desirable to update the map positions for screen 101 and use the updated map of provisions to control the synchronization pulses of the beam 120 excitation at each horizontal scan during normal display. Map positions for the screen 101 can be obtained by using a light signal 122 and 132 feedback when the calibration scan when the system is not in normal display, for example during the start-up phase of the system. In addition, the light signal 132 servo feedback you can use to display video in real BP is like for monitoring and measuring changes in the existing map of the provisions for the screen 101, when the system operates in a normal mode display, creating images on the screen 101. This mode tracking control is called dynamic tracking control. Dynamic control of the screen 101 can be useful when the system runs for a long period of time without downtime, because the screen 101 may be subjected to changes, which may lead to significant changes in the map of the provisions for the screen 101, which is updated during the start-up phase of the system.

Map positions for the screen 101 can be saved in memory of the laser module 110 and reuse within a certain time interval, if the compensated effects vary slightly. In one implementation, when the display system, it can be configured to set the default synchronization of the laser pulses of the scanning laser beam on the basis of the data stored in the map provisions. Servo control can control in real time using a light signal 132 witness feedback and to control the timing of pulses during operation.

In another implementation, when the display system is turned on, it can be configured to run by default calibration with the use of what Finance beam 120 excitation and servo beam 130 to scan the entire screen 101. The resulting measurement position data is used to update the map positions for the screen 101. After the initial calibration during the start-up phase the system can be switched to the normal display, then the normal display is used only servo beam 130 to control the screen 101, and the data on the screen 101 received from the servo beam 130, can be used to dynamically update the map positions, and means to control the synchronization pulses in the beam 120 during each horizontal scan.

The calibration map for the screen 101 can be performed by creating each scanning beam 120 or 130 in continuous wave (CW) for one frame during which the scanning laser beams 120 and 130 rotates around the screen, one segment at a time, as shown in Figure 5, in the case of multiple laser beams 120. When using a single laser to create a single beam 120 excitation of a single scanning beam 120 is installed in the CW mode to scan the entire screen 101 one line at a time with a witness beam 130. The light signal 122 and 132 feedback from the servo reference marks on the separator strips are used to measure the position of the laser beam on the screen 101 by using tracking detectors 620 and 630.

<> The signals from the tracking detectors 620 and 630 can be sent via e-peak detector, which generates electronic pulse whenever the relative amplitude of the tracking signal is maximum. The time interval between these pulses can be measured using a clock synchronization in a digital circuit or microcontroller that is used by the processor/controller 640 for processing and generating the error signal to control the synchronization of the optical pulses in each beam 120 excitation in the horizontal scan.

In one implementation, the time interval between two adjacent pulses from the electronic peak detector can be used to determine intervals between two places, which generate the two adjacent electronic pulse, based on the scan rate of the scanning beam 120 or 130 on the screen 101. These intervals can be used to define the width of the subpixel and the subpixel position.

In another embodiment, the implementation of the measurement and correction for the tracking control based on measurements of relative time. Depending on the frequency of the beam sweep and the frequency of the clock synchronization there is some nominal number of clock pulses for each subpixel. Due to optical distortion, defecto the screen or combination of distortions and defects the number of clock cycles between two adjacent pulses for any given sensor may deviate from the nominal number of clock cycles. This deviation of the number of clock cycles can be encoded and saved in memory for each subpixel. Alternatively, you can calculate the correction value and use it for a number N of neighboring sub-pixels, as between adjacent sub-pixels significant changes usually do not occur.

On Fig shows one example of the detected reflected light of the feedback signal as a function of time sweep for the site of one horizontal scan, the corresponding output signal of the peak detector and the clock signal sampling. Shown here is rated movies with a width corresponding to 9 clock cycles of the master clock sample rate, and nearby short subpixel corresponding to 8 clock cycles. In some embodiments of the width of the subpixel may correspond to 10-20 clock cycles. Clock cycle of the clock signal sampling digital circuit or microcontroller for servo control determines the spatial resolution of the error signal. For example, if we are talking about ways to improve this spatial resolution, to effectively increase the spatial resolution of the error signal can be used averaging over multiple frames.

On Fig shows one example of the detected reflected light is of igala feedback as a function of time sweep for the site of one horizontal scan, a corresponding output signal of the peak detector and the clock signal of the sampling rate, which shows the nominal subpixel corresponding to a width of 9 clock cycles, and the adjacent long subpixel corresponding to a width of 10 clock cycles.

During calibration the presence of contaminants, such as dust on the screen, the defects of the screen, or some other factors, can lead to the loss of the optical pulse in the reflected light of the feedback signal, which was generated by the servo reference mark between two adjacent sub-pixels on the screen 101. On Fig shows an example of a failure of the pulse. The missing momentum can determine if the pulse was not counted or detected in the nominal number of clock cycles for subpixel within the maximum expected deviation from the nominal number of clock pulses to one subpixel. If momentum is lost, it can be assumed that the missing subpixel contains the nominal value of clock cycles for one subpixel, and the next subpixel may include the correction of synchronization for both sub-pixels. Correction of synchronization can be averaged over the two sub-pixels to increase the accuracy of detection. This method can be extended to any number of consecutive missing pulses.

The above use of the clock signal is sampling for measurement, required to support card provisions for the screen 101 can be used in conjunction with detection of a light signal 122 servo feedback excitation or light signal 132 servo feedback from the screen 101. Since the beam or beams 120 excitation scan all of the horizontal lines on the screen 101 during the calibration scan in the CW mode, the position data obtained from the light signal 122 servo feedback excitation, can contain data for each of the sub-pixels of the screen 101. However, the position data obtained from the servo beam 130 and a corresponding light signal 132 feedback only cover one horizontal scanning lines of one screen segment, as shown in Figure 5. Position data obtained by measuring the servo beam 130 for one display segment, can be used as a representative scan for all horizontal lines in the display segment to update the position data for all rows in the display segment. To increase the number of rows for which the measure in each display segment, you can use two or more witness rays 130.

The vertical position of each laser can be controlled and configured using the actuator, the vertical scanner and adjustable lens on the optical fiber is tion path of each laser beam, or using combinations of these or other mechanisms. On the screen can be provided for vertical reference marks to ensure the witness feedback vertically from the screen to the laser module. Near the image area on the screen 101 can be provided by one or more reflective, fluorescent, or translucent vertical reference marks for measuring the vertical position of each beam 120 excitation. Refer to 11, where these vertical reference marks can be placed in a peripheral zone of the reference marks. To measure the reflected or fluorescent and transmitted light from the vertical reference marks when the radiation beam 120 or 130, you can use one or more optical detectors of vertical labels. The output signal of each optical detector vertical labels are processed, and information about the vertical position of the beam is used to control the actuator to adjust the vertical position of the beam on the screen 101.

On Figa shows an example of a vertical reference marks 2810. The label 2810 includes a pair of identical triangular reference marks 2811 and 2812, which are moved apart relative to each other both in vertical and horizontal directions to maintain the overlap in the horizontal direction. The orientation of each triangular supports the Oh label 2811 or 2812 determines the change of the area in the vertical direction, so the beam 120 partially overlap each label when it is scanning in the horizontal direction. When changing the vertical position of the beam 120 changes the size of the overlap area on the label. The relative position of the two marks 2811 and 2812 defines the specified vertical position of the beam, and the scanning beam along a horizontal line through this predetermined vertical position, rotated through the same area, are shown as shaded areas in the two marks 2811 and 2812. When the beam is vertically above this predetermined position in front of him is a large area in the first mark 2811 than the second label 2812, and this difference in size of the areas that beam increases with further movement of the beam in the vertical direction. Otherwise, when the beam is below a predetermined vertical position, being on its way in the second label 2812 is greater than the area in the first mark 2811, and this difference increases as the movement of the beam farther down in the vertical direction.

Light feedback signal from each of the triangular marker integrated at the specified label, and the integrated signals of the two labels are compared to obtain a differential signal. The sign of the differential signal indicates healthy lifestyles is the offset relative to the predetermined vertical position of the beam, and the magnitude of the differential signal indicates the amount of displacement. Ray excitation is in the correct vertical position, when the integrated light signals from each triangle are equal, that is, the differential signal is zero.

On FIGU shows part of the signal processing, which is part of the control unit vertical position of the beam with servo feedback in the laser module 110 to the vertical reference marks on Figa. Preamp 2910 on p-i-n diodes receives and amplifies the differential signal of the two signals reflected from the two marks 2811 and 2812, and sends the amplified differential signal to the integrator 2920. To convert a differential signal into a digital signal provided by the analog-to-digital Converter 2930. Digital processor 2940 processes the differential signal to determine the magnitude and direction of setting the vertical position of the beam and generates a corresponding control signal of the vertical actuator. This control signal is converted into an analog signal by the d / a Converter 2950 and is supplied to the controller 2960 vertical actuator, which adjusts the drive. On Figs additionally shows the process of generating a differential signal by using a single optical detector.

On Fig showing the n sample screen 11, having a reference mark start of line (SOL) and the reference labels of the vertical beam position. A set of reference labels the vertical position of the beam can be placed at different vertical positions for the measurement of the vertical position of the beams 120 excitation in all of the display segments. In the example on Fig shows that the reference label SOL is between the reference labels of the vertical beam position and the display area of the screen, so when the horizontal scan left-to-right beam 120 excitation or servo beam 130 enters an anchor tag SOL after the reference labels of the vertical beam position. In another implementation, when the horizontal scan from left to right reference nous SOL is between the reference labels of the vertical beam position and the display area of the screen, providing a beam 120 excitation or servo beam 130 on the anchor tag SOL to the reference labels of the vertical beam position. In addition, separately from the reference labels of the vertical position of the beam for beams 120 excitation at different vertical positions may be posted by a set of reference labels the vertical position of the beam, for example, one vertical reference mark for servo beam 130 to provide a measurement of the vertical position of the servo beam 130 in each display segment. These vertical supports of the s labels presented on Fig number "1910". The combination of the reference marks SOL 1210, vertical reference marks 1910, as well as periodic nature of the structure of bands in the light-emitting region 1110 provides information about positioning invisible servo beam 130, the positioning information of rays 120 excitation and horizontal settings of the pixels on the screen 101 for servo control in a display system with scanning.

On Fig shows an example of a process servo control using servo beam 130 during normal display, when each beam 120 excitation is used to transfer optical pulses to create images on the screen 101 and is not used for servo control. Servo beam 130 is a continuous (CW) beam, which can be deployed on a single horizontal line for one display segment, along with scanning the modulated laser beams 120 excitation. Signal light 132 servo feedback is detected by one or more tracking detectors 620 to measure the consistency error servo beam 130 on the screen 101 during normal display. Approval of each of the laser beam 120 excitation is adjusted based on the measured consistency error servo beam 130 to reduce the consistency error of the laser beam 120 excitation. In other is the option of implementation to ensure the calibration mechanism of the measurement results, obtained through the servo beam 130, you can use red, green and blue light emitted by the screen 101, or part of the reflected light signal of the scanning excitation beam 120 excitement.

In the above examples, the use of invisible infrared servo beam 130 to emit a light signal 132 feedback in the laser module 110 to create a reflected light signal 132 feedback by reflecting the witness beam 132 divider strips use a parallel phosphor strips and the separator strips on the screen 101. In an alternative embodiment, the design of the screen 101 may include labels infrared feedback, configured to generate a desired light signal 132 feedback. Labels infrared feedback can be addressed through specific spatial relationship with the separators of the phosphor stripes or bands, for example, the label position servo feedback level on the light-emitting stripe or the separator between two adjacent parallel light-emitting stripes on the screen. In the examples described below, this fixing is required and sufficient to tag the infrared feedback had a fixed and known spatial relationship with the separator strips or phosphor is oloumi, in order to ensure a fixed and known display labels provisions infrared feedback and provisions of the phosphor strips and separator strips.

On Fig shows an exemplary structure of a light emitting screen 101, which includes labels infrared feedback from the excitation of the phosphor layer. This screen 101 includes: a layer 2110 phosphor strips with parallel phosphor stripes, emitting red, green and blue light when the excitation beam 120 excitation; rear panel 2112-side excitation of the phosphor layer 2110, which are the beam 120 excitation and IR servo beam 130; and the front panel 2111 from the phosphor layer 2110, facing the viewer. In this example, on the rear surface of the rear panel formed labels infrared feedback to create an infrared light signal 132 feedback by reflecting or scattering the infrared servo beam 130. In other embodiments of the label 2120 IR feedback can be in other positions either side of the excitation of the phosphor layer 2110, or on the side of the layer facing the viewer.

Tags 2120 IR feedback is provided to ensure the registration provisions of the servo beam 130 on the screen, and they can be implementing the designed in various configurations. For example, tag 2120 IR feedback can be a recurring stripes parallel parallel phosphor strips in the phosphor layer 2110. Tag 2120 IR feedback can be placed in any position relative to the separator strips or phosphor stripes in the phosphor layer 2110 in the horizontal direction, including a position displaced horizontally relative to the separator strips or centre phosphor band. The width of each label 2120 IR feedback may be equal to the width of the spot IR servo beam 130 on the screen 101, when the detected light signal 132 infrared tracking feedback is a peak detector. You can use tags 2120 IR feedback with a width greater than the width of the spot IR servo beam 130 on the screen 101, if the detected light signal 132 infrared tracking feedback based on the position of each tag 2120 IR feedback in relation to the reference point position, for example the label SOL. The width of the labels 2120 IR feedback may be less than the width of each phosphor strip, for example, be one-half the width of the phosphor strips. The interval between two neighboring marks 2120 IR feedback may exceed the interval m is waiting for two adjacent phosphor stripes. For example, the interval between infrared labels can be up to 25 mm, and the interval between the phosphor strips may be 1.5 mm

Tags 2120 IR feedback can be designed in such a way that their optical properties different from the surrounding areas and the areas between the marks 2120 IR feedback that enables optical detection marks 2120 IR feedback for registration provisions tags 2120 IR feedback on the screen with the support of virtually the same optical transmittance for beam 120 excitation as in the areas surrounding the label 2120 IR feedback, as well as between them. Thus, the presence of labels 2120 IR feedback does not affect the passage of a beam 120 of excitation of the optical imprinting forms labels 2120 beam 120 excitation, which reaches the phosphor layer of the screen 101. In this regard, marks 2120 IR feedback can be implemented in various configurations. For example, each label infrared feedback can be performed with a smooth surface facing the side of the excitation, which specularly reflects light, and the area surrounding the tag 2120 IR feedback and in-between, configured in such a way that they cause diffuse reflections is tion in different directions. Specularly reflective marks 2120 IR feedback and diffuse reflecting area surrounding the tag 2120 and in between, have the same characteristics of light transmission. Unlike the above-described construction with mirror marks 2120 to diffuse the base tag 2120 IR feedback can also be performed diffuse reflecting light, and the area surrounding the tag 2120 and in between, perform mirror. In another example, the label 2120 IR feedback can have a capacity or reflectivity at the wavelength of the beam 120 excitation that is significantly different from the wavelength of the servo beam. For example, tag 2120 IR feedback can be configured optically transparent for the beam 120 excitation and optical reflecting for servo beam 130, so that the label 2120 IR feedback are optically "invisible" to the beam 120 excitation and reflecting the servo beam 130 to generate a light signal 132 infrared tracking feedback.

On Fig and 23 show examples of the configurations screen layout with a vertical reference marks 1910 to measure vertical positions IR servo beam 130. On Fig vertical reference marks 1910 located on the edge of the screen, preferably outside of the main display area of the screen. On Fig vertical reference marks 1910 are located at the edges and in the middle of the screen, and they can be made of the same characteristics of colour for beam 120 excitement.

On Fig shows a specific example of the construction of the screen with a specularly reflective labels infrared feedback and diffusion regions surrounding labels infrared feedback and in between. In this example the label infrared feedback made in the form of a film strip, which has a smooth surface for specular reflection 2430 incident infra-red tracking light signal 130. The screen area between the two marks infrared feedback is in the form of a film layer with a rough surface that scatters light when the reflection of the incident infra-red tracking light signal 130 to diffuse reflection 2440 in different directions with the formation of a cone of diffuse reflection. Two areas 2410 and 2420 are approximately the same transmittance for beam 120 excitement.

In the above-described design of the screen, providing an infrared tracking feedback, you can use different optical modes specular reflection and diffuse reflection IR servo beam 130 from the screen remote from the screen, the optical field to facilitate the detection is of the witness beam, as shown in the example on Fig.

On Fig shows the approximate system 2500 display with scanning beams, which provides an infrared tracking feedback based on the design screen Fig. The laser module 110 projects and deploys as IR servo beam 130 and the beam 120 excitation on the screen 101 with labels infrared feedback. The laser module 110 has an optical axis 2501 symmetry about which the expansion is carried out of the beam. The screen 101 has a construction shown in Fig or 22 on the basis of the design Fig. There is telecentric optical lens 2510, for example a layer of a Fresnel lens, to connect the falling of the scanning beams 120 and 130 from the laser module 110 on the screen 101. Telecentric lens 2510 configured in such a way that its optical axis 2502 symmetry parallel to the optical axis 2501 laser module 110 offset 2503. As here shown, the lens 2510 Fresnel located in front of the rear surface of the screen 101 with an air gap 2520.

Detection of infrared tracking signal is provided by an infrared tracking detector 2530 located on the optical path specular reflection 2430 incident infra-red tracking light signal 130 from labels infrared feedback on the screen 101. The location of the infrared kadasig the detector 2530 is determined by the offset 2503 for receiving specular reflection 2430 incident infra-red tracking light signal 2130 from each label infrared feedback on the screen 101. The returned infrared light in a direction different from the direction of specular reflection from each label infrared feedback deviates lens 2510 Fresnel, so that he fell on infrared tracking detector 2530, when the deviation from the trajectory of mirror reflection exceeds the size of the aperture infrared tracking detector 2530. With this configuration, infrared tracking detector 2530 receives only a very small part of the returned infrared tracking signal light in a diffuse reflection 2440 from the area between marks infrared feedback, while a large part of the returned infrared tracking signal light in a diffuse reflection 2440 misses infrared tracking detector 2530. In contrast, infrared tracking detector 2530 receives the light returned in the mirror reflection 2430 incident infra-red tracking light signal 130 from each label infrared feedback on the screen 101. On the basis of the difference signals from the infrared tracking detector 2530 can be used to determine the penetration of infrared scanning servo beam 130 on the label infrared feedback.

The light beam 120 excitation can also be reflected back to the mirror and diffusion zones on the screen 101. Mirrored St. the t at the wavelength of excitation is sent back to the location of the infrared tracking detector 2530. For splitting the received light at the wavelength of the tracking beam and the received light at the wavelength of the beam of excitation into two separate signal separate optical detectors (infrared tracking detector 2530 to receive infra-red tracking light signal and another witness detector for receiving light of the feedback signal at the wavelength of excitation), you can use selective optical beam splitter.

Scanning infrared servo beam 130 may be continuous (CW) beam. In fact, every hit on the label infrared feedback on the screen creates an optical pulse in the infrared tracking detector 2530. During each horizontal scan infrared tracking detector 2530 detects a sequence of optical pulses, which correspond to different labels infrared feedback on the screen. Output Sigal infrared tracking detector 2530 similar output signals of the detector shown in Fig-17, and obtained using delimiters phosphor stripes as labels infrared feedback, except that the interval between pulses in the output signal of the infrared tracking detector 2530 time more, and it corresponds to the interval between labels infrared reverse tie is. Similarly, to determine the horizontal location of the infrared scanning servo beam 130 can use the signals SOL or EOL, and to determine the vertical position of the scanning infrared servo beam 130 can be used vertical anchor tag.

In the examples of the system in figure 1, 6 and 7 signal light excitation/servo feedback can be used in conjunction with a servo feedback based on invisible servo beam 130. In these systems, along with the tracking control of the measurement results positioning obtained by the feedback through the infra-red tracking light signal and the servo signal feedback excitation received through the signal light excitation, can be used to calibrate them against each other. For example, the specified display system can be run to perform the calibration using beam 120 excitation and IR servo beam 130 to sweep across the screen 101 in order to perform measurements to support card provisions for the screen 101, and the use of the card provisions, obtained using beam 120 excitation, calibration card provisions, obtained using the IR servo beam 130. Based on this calibration during normal operation of the system can be used for feedback with IR servo beam 130 without the use of feedback based on the servo feedback using beam excitation, for control of the screen 101 and the synchronization control pulses in the beam 120 during each horizontal scan.

In some embodiments of you can design a screen 101, where to create visible light is the light of the excitation signal by reducing the optical loss of light in the beam 120 excitation. For example, the screen may be constructed in such a way as to prevent any optical reflection back into the laser module 110 by using, for example, the optical layer-side excitation of the phosphor layer for transmission of the beam of excitation on the phosphor layer and the return light of the excitation signal from the phosphor layer back to the phosphor layer. When applying the above structure of the possible difficulties using the light from the beam 120 excitation to create a tracking beam 122. The following sections describe the design of the system, where to create a visible witness of the beam and providing a second feedback mechanism in addition to the witness feedback on the basis of invisible infrared beam is used visible light emitted from phosphor layer on the screen 101.

On Fig shows an example system 2600 display with scanning beams, which provides servo feedback based on the IR servo beam 130 and the second witness is mainly the second communication based on the detection of visible light, emitted from the phosphor layer of the screen. In this system, for detecting red, green, and blue light emitted by the screen 101, using optical tracking measuring unit 2610 radiation from the screen. Witness the measuring unit 2610 may be in the place where it is possible to detect the emitted visible light from the screen 101, for example, on the part of the viewer screen 101, or by excitation of the screen 101, as shown here, and location tracking of the measuring unit 2610 can be selected on the basis of the design of the screen and the system topology. In the measuring unit 2610 has three optical detector PD1, PD2 and PD3 to detect red, green and blue fluorescent light, respectively. Each optical detector is designed to receive light from a portion of the entire screen 101. Before each optical detector can be placed bandpass optical filter to select the desired color and the suppression of light of other colors. This measuring unit 2610 generates a signal 2612 servo feedback supplied to the laser module 110 to control the operation of the system.

One way to correct the horizontal misalignment of the display systems in Pig is programming the processor to display in the laser module 110 to control the synchronization of the optical pulses on the basis of a position error is detected in the signal 2612 feedback. For example, the laser module 110 may delay a modulated image signal, a portable modulated laser beam 120, at one time segment of the color subpixel, if the green detector has an output signal, and the red and blue detectors do not have them, or at two time segment color subpixel, if detector blue has an output signal, and the red and green detectors do not have them. Such correction of the error of the spatial coordination on the value of the time delay can be provided in digital form to the processor display. Then there is no need of the physical configuration of the blocks of the optical scan and create an image in the laser module 110. Alternatively, we mean the ability to configure the controller unit in the laser module 110 to physically shift the position of the beam 120 excitation on the screen 101 in order to adjust the position of the beam on the screen 101 horizontally to the left or to the right by one subpixel in accordance with the error detected witness measuring unit 2610. Optical approval by the physical configuration of the scanning laser beam 120 and the electronic or digital approval by the synchronization control of the optical pulses may be combined with management, providing the necessary horizontal agreement is popping.

To check the horizontal coordination system 2600 display Fig you can use some test combination. For example, for test approval as test combinations you can use one frame (red, green, or blue). On Figa shows the test combination for color pixel captured by detectors in witness measuring unit 2610, and the corresponding output signals of the three detectors PD1, PD2 and PD3 at the correct horizontal alignment. On FIGU, 27C and 27D shows the three different response by the three detectors PD1, PD2 and PD3 in the presence of misalignment in the horizontal direction. The responses of the detectors are served in the laser module 110 and used to create a time delay in any way or matching (pairing) optics that creates an image using a beam, to correct the horizontal misalignment.

Therefore, control with servo feedback-based measurements of visible light emitted by the screen (Fig), implemented during the special operation, calibration of the system 2600, when the system 2600 does not display the image for the viewer. This type of feedback control is "static"because the system is removed from its normal display mode and works with the test combinations of erenia of agreement parameters screen 101. For example, such an algorithm with a static servo feedback can be performed once at power-up display system or when the initial card at the factory before the system will begin normal display image on the screen 101, and may be controlled by the display system to perform the initial calibration of clock pulses to align the laser pulses in accordance with the provisions of the centers of the sub-pixels. Unlike static servo control of dynamic servo control can be implemented also in a time when the system operates in the normal mode display. For example, the algorithm with dynamic feedback is performed continuously during normal operation of the display system. This dynamic servo feedback supports synchronization pulses in accordance with the position of the center of the subpixel, despite temperature changes, moving screen, the deformation of the screen, the aging of the system and other factors that may violate any agreement between the laser and the screen. Dynamic tracking control is performed during display of video data on the screen and designed in such a way that his audience does not feel. Such dynamic control is provided by means of invisible slideme what about the control system 2600 for Fig.

On Fig shows an example design for optical tracking control using the tracking optical sensor 4501 visible light, placed at a distance from the fluorescent screen 101 on the part of the viewer screen 101 in the system 2600 display with scanning beams. Optical sensor 4501 can be configured and positioned to provide an overview of the entire screen 101. Between the screen 101 and the sensor 4501, you can use a collecting lens for receiving fluorescent light from the screen 101. Optical sensor 4501 may include at least one optical detector for detecting the fluorescent light of a selected color, such as green, of different colors (e.g. red, green and blue)emitted by the screen 101. Depending on the specific methods used in servo control in some implementations, perhaps that will be sufficient to have one detector for single color, but in other implementations may need two or more optical detectors for detecting two or more colors of fluorescent light from the screen 101. To provide redundancy for the tracking control you can use the additional detector. As for anchor tags to create reference signals, detection of these reference signals and functions control the Oia based on the reference signals from the reference marks, the tracking control can be combined with the control functions of the tags for the system. In the example described below, as a reference point in time for the static servo synchronization control optical pulse scanning beam you can use an anchor tag to the beginning of the string outside the scope of a screen having a fluorescent bands.

In the example on Fig optical sensor 4501 includes three optical tracking detector 4510, 4520 and 4530 (e.g., photodiodes), which respectively detect three different colors emitted by the screen 101. Photodiodes 4510, 4520 and 4530 collected in three groups, and each group is equipped with a red filter 4511, green filter 4521 or blue filter 4531, so the three photodiode 4510, 4520 and 4530, respectively, received three different colors. Each filter can be implemented in various configurations, for example, in the form of a film, which makes photodiode sensitive to only one of the colors (red, green or blue) from the projection screen.

Diagram of the detector for each color group may include a preamplifier 4540, the integrator signal (for example, the drive charge) 4541 and analog-to-digital Converter 4540 to digitize the signal detector red, green or blue for the purpose of its processing in the digital circuit 4550 servo control, which may present with the battle microcomputer or microprocessor. The intensity of red, green and blue fluorescent light emitted by the screen 101, it is possible to measure and transmit the measurement results in digital circuitry 4550 servo control. Digital circuit 4550 servo control can create and use a signal 4552 reset to reset integrators 4541 to control the operation of the integration performed by the detectors. Using these signals, a digital circuit 4550 servo control may determine whether an error matching the scanning laser beam on the screen 101, and on the basis of the detected errors to decide whether to shift clock pulses of the laser forward in time or backward in order to center the laser pulses in the sub-pixels on the screen 101.

The operations described here static servo control performed when the display system is not working in normal mode display images on the screen. Consequently, it is possible to avoid the regular frame scan in both directions using the vertical galvanometer scanner and a polygonal horizontal scanner during normal operation. Vertical scanning galvanometer scanner can be used to direct the scanning laser beam in a desired vertical position and lock in this position to perform repeated the horizontal sweeps with different time delays in the synchronization of the laser pulse to obtain the necessary error signal, indicates the synchronization error of the laser when the horizontal scan. In addition, during the operation of the static servo control to generate the error signal, you can use a combination of laser pulses (for example, Figa-D and 29), which does not transfer the image signals.

When the static servo control combination of laser pulses for laser, you can choose so as to obtain a signal proportional to the position error of the laser pulses on the screen 101. In one implementation that uses multiple lasers, one laser at a time generates a pulse on the screen 101, and the other laser is turned off. This mode allows to evaluate the synchronization of each laser independently and to adjust the process static servo control.

On Fig and 30 shows one exemplary method and means for the formation of the error signal for the implementation of the static servo control. On Fig shows an example of a test combination of optical pulses used to modulate a scanning laser beam, which has a periodic combination of laser pulses. Pulse width during this test combinations of the pulses corresponds to the spatial width of the screen, which is larger than the width (d) of the border between two adjacent sub-pixels and half the width (D)of the subpixel (one fluorescent stripe). For example, pulse width during this combination of pulses corresponds to the spatial width equal to the width (D) of the subpixel. The recurrence time of a combination of pulses corresponds to a spatial separation of two adjacent laser pulses on the screen, which is equal to the width (3D) one color pulse (three consecutive fluorescent bands).

When working in sync combination of laser pulses on Fig set up so that each laser pulse partially overlaps one subpixel and the neighboring subpixel for excitation light of different colors in the two neighboring sub-pixels. Thus, the laser pulse that overlaps two adjacent subpixel (for example, the red subpixel and the green subpixel), has a plot of excitation of red, which overlaps with a red subpixel, to create a red light and a plot of excitation green, which overlaps with the neighboring green subpixel, to generate green light. To determine whether the center of the laser pulse with the center of the border between two adjacent sub-pixels, and the offset between the center of the laser pulse and the center of the border, use the relative power levels emitted red light and emitted green light. In the process of tracking control based on the shift state is set up synchronization combination of laser pulses to reduce this shift and align the center of the laser pulse with the center of the border. After this alignment during follow-up control of correct synchronization of the combination of laser pulses (advance or delay) to shift each laser pulse half width of the sensor to the center of the laser pulse coincided with the center of any two neighboring sub-pixels. This completes the coordination laser with a color pixel. During the above process, the vertical scanner is fixed to the direction of the laser when negotiating in a fixed vertical position and the horizontal polygon scanner periodically expands the laser beam along the same horizontal line to create the error signal.

In the above process for determining the shift between the positions of the center of the laser pulse and the center of the border between two adjacent sub-pixels using the relative power levels emitted red light and emitted green light. One of the ways of implementing the described method is to use a differential signal based on the difference between the amount of light emitted by two different phosphor materials. The implementation of the method according to Fig can be affected by several factors associated with the detection of servo signals. For example, different fluorescent materials for emitting different color is in, can have different efficiency of radiation at the wavelength of excitation, so that when using the same scanning beam of excitation of the two adjacent sub-pixel may emit light of two different colors (e.g. green and red) with different power levels. In another example, the light filters 4511, 4521 and 4531 to pass red, green and blue colors can have different transmittances. In another example, optical detectors 4510, 4520 and 4530 may have different detection sensitivity for three different colors, and therefore, when the same amount of light received at the detectors of different colors, the output signals of detectors may vary. Consider now the condition where the center of the laser pulse is aligned with the center of the border between two adjacent sub-pixels, and therefore the laser pulse is divided equally between the two neighboring sub-pixels. Because of the above, and other factors servo optical detectors corresponding to the colors of the radiation of two adjacent sub-pixels can create two output signals at two different levels, when the laser pulse is equally divided between two neighboring sub-pixels. Therefore, for this system, display signals tracking detectors can be calibrated to account for the above and other factors that the s accurately represent the shift position of the laser pulse. Such calibration may be provided by hardware, software (digital signal processing in the digital circuit 4550 servo control Fig), or a combination of hardware and software signal processing. In the following sections it is assumed that the required calibration is implemented so that when the laser pulse is split equally between two adjacent sub-pixels, the calibrated output signals of the two different optical tracking detectors are equal.

Thus, under conditions appropriate consultation, one half of each laser pulse hits the green subpixel, and the other half of the same pulse at the neighbouring red subpixel. This combination of pulses creates an equal number of red and green light on the witness detectors with proper coordination. Thus, the difference between the output voltage of the red detector and the output voltage of the detector green represents the error signal indicating the correctness of the approval. With proper coordination of the differential signal between the red and green detectors is equal to zero, and if the wrong negotiate this difference has a positive or negative value that indicates the direction of shift in the orchestration. This use of different the actual signal between the two color channels can eliminate the need to measure the absolute value of the amplitude of the light signal, emitted by the phosphor viewing screen. Alternatively, the difference between the two different color channels (detectors blue and red or green and blue detectors) can also be used for error indication coordination or alignment. In some implementations, because the wavelength of blue light is closer to the wavelength of the incident laser light used for excitation, can be more practical to use the difference of the signals of the detectors green and blue for servo control. To generate a detection signal is used connected to the digital circuit 4550 optical sensor receiving light from the reference marks, which is separated from the optical sensor 4501 to detect fluorescent light signal feedback from the screen Fig.

When the static servo controlling the starting time of the scan can be adjusted the first time using test combinations of pulses in a scanning laser beam. The synchronization is correct for the first group of neighboring pixels along the horizontal (e.g., 5 pixels), then for the next group of neighboring pixels of the same size, for example, the next group of 5 pixels, then for the next group of 5 pixels until it is adjusted all the scan for this what about the laser. Here the number of pixels equal to 5, selected as an example for illustration. The specified group of pixels can be used to reduce the time required for servo control and increase the signal-to-noise to signal errors when combining signals generated from different pixels in the same group. In practice, the number of pixels for each group, you can choose based on the specific requirements of the display system. For example, the error of the initial synchronization can be considered serious when a small synchronization error can result in a large number of sequential pixels in the group for servo control, and when the synchronization error may require a smaller number of consecutive pixels to join in groups for servo control. For each measurement synchronization error of the scanning beam can be adjusted up to one clock cycle of the digital clock signals in digital circuits 4550 servo control. On Fig digital circuit 4550 servo control is a microcontroller designed for synchronization control of each individual laser and used to correct the synchronization of the laser pulse for each pixel.

Note that different phosphors can be of th is action under the fluorescent emission. This property of phosphors may cause the phosphor will glow after the laser pulse has moved to the next pixel. Contact Peg on which to compensate for this effect phosphor integrator 4541 signal can be connected to the preamp output 4540 for each tracking detector. The integrator 4541 can be used to effectively "summing up" all over the world for this preamp 4540 on the set of pixels, when the voltage on the bus reset of the integrator has a low level at which the integrator is in the mode of integration. When the microcontroller initiates the analog-to-digital stopwatch is measuring the total light for that color. Then to reset the integrator voltage on the bus 4552 reset for each integrator is transferred at a high level until the voltage at the output of the integrator will not return back to zero, after which the bus voltage is reset again transferred to the low level to start a new integration period, during which the integrator 4541 again starts the summation of light.

On Fig shows how changes the error signal when changing the timing of the laser beam from its nominal position directly in the center between the red and green sub-pixels, using a combination of laser pulses is about Fig. When the error voltage differential signal based on the combination of laser pulses on Pig zero, as shown in Fig, there is an equal number of red and green light on the witness detectors red and green, and synchronization of laser pulses is provided directly on the border between two adjacent sub-pixels. When this error signal on each count represents the synchronization error of the laser only for the period after the previous reset pulse. Using this scheme, you can create a corrected map synchronization of the laser for each of the laser on each horizontal pass, until the adjusted synchronization over the entire screen for each laser. To change the vertical position of the horizontal scanning beam for each laser uses vertical scanner.

In the above described method of creating a static error signal as a point of coordination for alignment of the laser pulse in combination laser pulses are used, the boundary between two adjacent sub-pixels. Alternatively, as a point of coordination for centering laser pulses directly on the sub-pixels without the use of a boundary between two adjacent sub-pixels can directly use the center of each the sub-pixel. When using this alternative way to generate the error signal for servo control enough to have an output signal from the witness of the optical detector of the same color. To provide a reference point to synchronize and facilitate coordination, you can use the anchor tag matching, such as peripheral reference mark approval for start of line (SOL) on Pig and a separate optical detector SOL, which detects the light feedback signal from the label SOL. See Fig, where the optical detector SOL is connected to the directions of its output signal in a digital circuit 4550 servo control.

An alternative method static servo control can be implemented as follows. Test the combination of pulses having at least one pulse corresponding to one subpixel in a pixel, is used to modulate a scanning laser beam, where the pulse width corresponds to the width (D) of one subpixel or less than this width. When the horizontal scan synchronizing laser is configured by the first group of sub-pixels of the scan after detection signal SOL optical detector SOL. On the basis of the reference synchronization signal SOL configures the synchronization combination of laser pulses to maximize the detected) the civil power in one of three colours, the emitted fluorescent screen, for example, green light (or red or blue). This setting can be achieved by translation of the laser in pulse mode (mode one pulse per pixel) and adjusting the synchronization of the laser. Maximize the green light to the first 5 pixels pulses are received for the next five green sub-pixels. Synchronization is shifted forward by one clock cycle during one horizontal scan, then is delayed by one clock cycle to the next horizontal scan of the laser beam at the same vertical position on the screen. As a correct synchronization of the laser is selected synchronization that provides maximum green light. If the output signal at clock cycle proactively equal to the output signal during the clock cycle latency, then the synchronization of the laser correct and remains unchanged. Then irradiate the following 5 pixels using pre-empt and delayed clock cycles, and for this group of 5 pixels is selected synchronization that provides maximum green light. The operation is repeated throughout the horizontal length of the screen until it reaches the end. According to this method, you can also create heartbeats, adjusted for each laser when the beam from the laser turns on is horizontaly across the screen.

The above-described operation of the static servo control is performed when the display system is not in normal mode, so you can use the test combination of pulses (for example, Fig), which does not bear the image signals. Dynamic correction servo control is performed by using an invisible infrared signal servo feedback during normal operation and viewing of images on the screen.

In this horizontal scanning all lasers can be shifted in phase forward by one clock cycle of the digital circuit 4550. This operation will cause the position of all the laser beams will move on the screen at a distance of scanning in one clock cycle, and this shift will be small when the scanning distance is small (for example, less than one-tenth the width of a subpixel). Accordingly, only slightly changes the amplitude of the color of light emitted from the subpixel (for example, the detector green). On the next frame all lasers are shifted in phase back one clock cycle. If the nominal position of the laser pulse is initially correct, then the amplitude of the sweep delay and scan ahead for two separate, but consecutive image frames must be equal for any color selected for measurements and observations. When the amplitudes of scans with a delay and the pre-emption for two different frames are different, there is a synchronization error of the laser, and then the synchronization of the laser can be adjusted to reduce the differences in successive frames of the image under the continuous control of the error signal, and the correction is updated based on the newly generated error signal. The sign of the difference indicates the direction of shift in the synchronization error of the laser, so that the tracking control can be applied the correction for the exceptions specified shift. By analogy with the above-described second method static servo control, to create an error signal for dynamic tracking control, it is sufficient to use the output signal from the witness of the optical detector of the same color.

On Fig shows a more detailed example of a scanning system based on the invisible dynamic tracking of feedback and static servo feedback using visible light. On the field-side of the screen 101 for detecting infrared tracking signal 132, reflected from the screen 101, there is an infrared tracking detector 620, while for the detection of visible light 3120 emitted by the screen, to ensure signal tracking detector of visible light, which are fed into the processor/controller 640 display, provided by the tracking detectors 3110 visible light. Static slides the Yu feedback based on the visible light used for the calibration map of the provisions for dynamic infrared tracking feedback run-time calibration of the system, and calibrated dynamic infrared tracking feedback is used during operation of the system for error correction negotiation beam.

Although this patent application contains many specific details, these should not be considered as limiting the scope of the invention or of what may be the subject of the application, but rather as a description of the characteristics common to a specific variants of the invention. Some of the signs described in this Patent application in the context of the individual options can also be implemented in combination in a single embodiment. On the contrary, the various characteristics described in the context of a single variant can also be implemented in many versions separately or in any suitable podnominatsii. In addition, although the signs may have been described above as operating in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excluded from this combination, and the claimed combination may be podnominatsii or variant of podnominatsii.

Here revealed only a few variants of realization of the invention. However, on the basis of the material described and illustrated in this patent application, may be proposed changes and improvements described and others who variants of realization of the invention.

1. Display system with scanning beams containing:
the excitation light source to generate at least one beam excitation with optical pulses that carry image information;
source tracking of light to produce at least one servo beam at the wavelength of the tracking beam, which is invisible;
module scan beam for receiving the beam of excitation and tracking beam and a scanning beam of excitation and tracking beam;
light-emitting screen, positioned to receive the scanning beam of excitation and witness beam and containing a light-emitting region, which contains: (1) the parallel light-emitting stripes which absorb light beam excitation, emitting visible light, to create images of the transmitted scanning beam of excitation; and (2) the separator strips, parallel light-emitting stripes and spatial alternating with them, and each separator strips is between two adjacent strips, where each separator strips is optically reflective;
optical tracking sensor positioned to receive light of the witness beam scanning the screen, including light reflected by the separator strips, and to generate a control signal indicating the positioning of the servo beam on the screen; and
the control unit, with osoby, in accordance with the positioning of the servo beam on the screen in the control signal, to perform adjustment of the timing of the optical pulses transmitted scanning beam of excitation, on the basis of the relationship between the tracking beam and the beam of excitation to control the spatial alignment of spatial positions of the optical pulses in the beam of excitation on the screen.

2. The system according to claim 1, in which the wavelength of the servo beam more each wavelength in the spectral range of visible light emitted from the light-emitting stripes.

3. The system according to claim 1, in which the tracking beam and the beam of excitation is propagated together on a common optical path of the scan beam to the screen.

4. The system according to claim 1, in which:
the screen includes a reflective strip line as a servo reference marks the beginning of the string outside the light emitting area of the screen, which is the parallel light-emitting stripes to indicate a reference position of the servo beam and the reference position of the beam of excitation during the beginning of the sweep servo beam or horizontal beam perpendicular to the light-emitting stripes, and
the control unit is able, on the basis of witness light beam received from the servo reference marks the beginning of the string and separator strips, to control the spatial alignment of spatial Paul is both the optical pulses in the beam of excitation on the screen, when the beam of excitation takes place in the light-emitting area and creates the image.

5. The system according to claim 4, in which the screen includes a servo reference mark the vertical position of the beam outside the light emitting region in the path of the scan beam perpendicular to the light-emitting stripes, and servo reference mark the vertical position of the beam being irradiated by the scanning beam, generates a light signal servo feedback in the vertical position of the beam, giving information about the vertical position of the beam in the vertical direction, parallel light-emitting stripes.

6. Display system with scanning beams containing:
light module for directions and scan at least one beam excitation with optical pulses that carry image information, and at least one servo beam at a wavelength different from the wavelength of the beam of excitation;
a screen positioned to receive the scanning beam of excitation and witness beam and containing a light-emitting layer parallel light-emitting stripes which absorb light beam of excitation and emit visible light to create images of the transmitted scanning beam of excitation, and a screen configured to reflect light of the witness beam in the direction of the light module to create Svetofor the signal servo feedback; and
optical tracking sensor module, positioned to receive the light signal tracking feedback and create a signal servo feedback indicating the positioning of the servo beam on the screen
where the light module responds to the positioning of the servo beam on the screen in the servo signal feedback to adjust the timing of the optical pulses transmitted scanning beam of excitation, to control the spatial alignment of spatial positions of the optical pulses in the beam of excitation on the screen.

7. The system according to claim 6, in which:
the screen contains tags for tracking feedback, which have a face facing the light source excitation, which reflect the light of the servo beam, and the area outside labels for servo feedback, which diffusely reflect the light of the servo beam;
where the system includes a Fresnel lens located between the screen and the light module, for directing a scanning servo beam and the beam of excitation, so that they fall on the screen are actually perpendicular, and
where the Fresnel lens has an optical axis symmetrically in the center of the Fresnel lens, so that it is parallel to the optical axis of the light module and shifted in relation to the direction of light of the witness beam, which is mirrored label slides the th feedback the optical tracking sensor, when the light of the servo beam diffusely reflected by the screen outside of the label servo feedback, distributed Fresnel lens in area exceeding an optical tracking sensor, for directing part of the diffusely reflected light servo beam on the optical tracking sensor.

8. The system according to claim 7, in which:
tags servo feedback are parallel stripes that are parallel to the parallel light-emitting stripes on the screen, and have faces that face the light source excitation, which reflect the light of the servo beam.

9. The system according to claim 6, containing:
the second optical tracking sensor module located relative to the screen so that it receives a portion of visible light emitted by the screen, to create a second signal tracking feedback, and
where the control unit is able to calibrate the positioning of the servo beam on the screen in the signal tracking feedback in accordance with the information about positioning the second signal tracking feedback.

10. The system according to claim 9, in which the second optical tracking sensor module includes a plurality of optical detectors corresponding to the detection of visible light of different colors emitted by the screen.

11. The system according to claim 6, in which the witness infrared ray is the ray.

12. The method of controlling the display system with scanning beams containing:
the scan on the screen of one or more beams of excitation modulated optical pulses to transfer images, for excitation of parallel light-emitting stripes to emit visible light that forms the image;
the scan on the screen of the servo beam on the optical wavelength different from the optical wavelength of one or more beams of excitation;
detection witness light beam from the screen to obtain a tracking signal indicating the positioning of the servo beam on the screen; and
in accordance with the positioning of the servo beam on the screen, managing one or more scanning beams of excitation to control the spatial alignment of spatial positions of the optical pulses in each beam excitation on the screen.

13. The method according to item 12, containing:
the detection part of the reflected light of one or more beams of excitation from the screen to create a second tracking signal indicating the positioning of the beam of excitation on the screen; and
use of information in the servo signal and the second servo signal to control the spatial alignment of spatial positions of the optical pulses in each beam excitation on the screen.

14. The method according to item 12, the content is of AMI:
detection of the visible light emitted by the screen to provide a second tracking signal indicating the positioning of the beam of excitation on the screen; and
use of information in the servo signal and the second servo signal to control the spatial alignment of spatial positions of the optical pulses in each beam excitation on the screen.

15. The method according to item 12, containing:
detecting light reflected from the reference line marks on the screen, which is separated from the parallel light-emitting stripes and parallel to them on the screen as a reference point in the beginning of the string to measure the beam position relative to the ends of the parallel light-emitting stripes; and
using the position measured from the reference line label for synchronization control of the optical pulses in each beam excitation when displaying images on the screen.



 

Same patents:

The invention relates to displaying information, namely, personal displays, helmet-mounted type

The invention relates to the field of image formation and can be used to create three-dimensional objects by physical experiments, systems, air traffic control, computer tomography, etc

FIELD: physics.

SUBSTANCE: one tracking beam and excitation beam are turned on a screen which emits visible light when excited by light of the excitation beam, and optical matching of the excitation beam is controlled based on the position of the tracking beam on the screen through control with servo feedback.

EFFECT: controlling spatial matching of spatial positions of optical pulses in an excitation beam on a screen.

15 cl, 38 dwg

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