Holographic optical display system information |
|
IPC classes for russian patent Holographic optical display system information (RU 2057352):
  
 The wavefront sensor / 2046382
The invention relates to the optical instrument and is intended for measurement of aberrations of optical systems
 Narrow-band selector on the basis of the reflective phase of the three-dimensional hologram / 2035766
The invention relates to holography
 Diffraction display, diffraction device, method for forming of display and method for forming different diffracted beams / 2256202
Device is used for displaying graphic images. One of variants of its realization includes holographic diffraction picture 100, positioned on constant magnet 120 or element connected to it, and coil or wire 160, through which current is let for moving the magnet. Rotation of holographic diffraction picture relatively to axis 10 forms an image using light, diffracting on holographic diffraction grid. Other variant of realization of display includes faceted rotary element, including facets matrix, each of which contains diffraction grid, and drive, meant for rotation of faceted rotary element from idle position to observation position. Rotation of faceted rotary element leads to forming of image by diffracted light.
 Directing optical signals by means of mobile optical diffraction component / 2256203
Source 70, 72, 74, 76 of optical signals 10 is directed toward mobile optical diffraction component 32. Each optical signal is characterized by its respective wavelength. Mobile optical diffraction component generates output optical signals 92, 94 and distributes them between output devices 88, 90.
 Photopolymer recording media for three-dimensional optical memory for very-large-scale information capacity / 2325680
Invention pertains to organic light sensitive recording media and can be used for making archival three-dimensional holographic optical memory with large scale information capacity. The photopolymer recording medium is described. It consists of solid triplexed polymer films or glass plates and light-sensitive layer between them, including unsaturated compounds, which are capable of ion-radical photopolymerisation; a system providing for photoactivation through radiation in the 400-600nm range and consisting of photochromic compounds and co-initiator. The light sensitive layer contains photochromic compounds with a long mean life of the photo-induced state or thermal irreversible photochromic bonds, and not necessarily, polymer binder, plasticizer and non-polymerisation organic liquid with a large refractive index. There is also proposed usage of such a recording medium in devices for three-dimensional holographic memory of large scale capacity.
 Hologram filter (versions) / 2376617
Hologram filter relates to devices for filtering optical radiation. The filter consists of a transparent substrate, coated with a transparent polymer film which contains a reflection hologram, and a protective layer adjacent to the polymer film. In the first version, the protective layer is in form of an optical wedge, the working surface of which, except the radiation inlet window in the thin part of the wedge, is coated with a reflecting layer. In the second version the filter additionally contains a mirror, placed opposite the reflecting hologram with possibility of varying the angle between the mirror and the hologram. Upon double passage of radiation through the reflecting hologram at different angles of incidence, a narrow spectral peak of the passing radiation is obtained at the output.
 Multipoint ophthalmological laser probe / 2435544
Group of inventions relates to medical equipment, namely, to laser probes and their combinations, applied in ophthalmology. Probe contains irradiating optic fibre for light beam irradiation, optic system, located on the irradiation side of irradiating optic fibre, and two or more receiving optic fibres, located opposite to irradiating optic fibre. Optic system contains diffractive surface. Light beam, irradiated by irradiating optic fibre, is diffracted into two or more diffracted light beams, focused in plane, parallel to diffraction surface. Receiving ends of each of two or more receiving optic fibres, are intended for reception of light beam, diffracted by optic system, are located in plane, parallel to diffraction surface. Another version of implementation is ophthalmologic laser probe, containing irradiating optic fibre and optic system, located on irradiation side of irradiating optic fibre. Optic system is made in the same way as in the previous version. Connection for laser probe contains case, optic system, located in case, first connecting link, located on one side of optic system; and second connecting link, located on the other side of optic system. Optic system contains diffraction surface, each of two or more diffracted light beams is focused in plane, parallel to said surface.
 Devices and methods for data storage / 2459284
Storage device comprises a plastic substrate, having multiple volumes arranged in the form of paths along multiple vertically packaged layers. The substrate demonstrates a non-linear optically sensitive functional characteristic, which is a threshold functional characteristic. The device comprises multiple micro-holograms, every of which is contained in the appropriate one of the volumes. Availability or absence of a microhologram in each of volumes characterises a stored data area.
 Plastic apochromatic lens / 2464600
Lens consists of five components, the first of which is in form of a biconvex lens, the second consists of a negative meniscus whose convex surface faces the object, on which a holographic optical element with optical power equal to 0.005-0.015 times the optical power of the lens is deposited, and a biconvex lens whose larger convex surface faces the object; the third and fourth components are aspherical positive menisci whose convex surfaces face the object; the fifth component is a plane-parallel plate.
 Optical system for holographic video camera / 2464608
Optical system for a holographic video camera includes an optical waveguide with an input holographic element on its surface, a lens, a visible radiation detector, an infrared radiation detector and a photoelectric converter connected to said detectors. The input holographic element is configured to split input radiation into visible and infrared parts. The optical waveguide is configured to transfer the visible part of radiation towards the visible radiation detector and the infrared part towards the infrared radiation detector. The lens is configured to form an image of an object through the optical waveguide and the holographic element on the detector. The photoelectric converter is configured to determine the phase difference between output signals, which are radiation intensity distribution in images obtained from visible and infrared radiation detectors.
 Method of making high radiation brightness laser diode / 2477915
Wide-emitter laser medium which is capable of generating multimode optical radiation is formed, having an active waveguide emitting layer, a first end and a second end. A partially transparent mirror is formed at the second end of the wide-emitter laser medium. The wide-emitter laser medium with a partially transparent mirror is placed on a high thermal conductivity substrate. A device is formed for adjusting the mode structure, which is based on a digital planar hologram, having an input end, said device being formed by forming a digital planar hologram at the first end of the wide-emitter laser medium in optical interaction with said hologram; the digital planar hologram is used as an opaque mirror by placing it on the same substrate as the laser medium, as a result of which an optical cavity is formed, and modes of optical radiation of the laser diode are selected, adjusted and amplified according to a give function.
|
(57) Abstract: Usage: holographic system information input from the display field of view of the operator in the simulators, video games, different modes of transport. The inventive holographic optical display system information display, optically conjugated with him the site of formation of the image display screen in the field of view of the operator, consisting of a transmissive holographic optical element and combiner installed on the windshield, the hologram optical element is designed as a block of two holograms, United by a layer of immersion substance and recorded so that the angle of incidence of the beam on the first hologram is equal to the angle of diffraction of the beam at the output of the second hologram and the diffraction angle of the beam at the output of the first hologram is equal to the angle of incidence of the beam on the second hologram, and the first hologram has optical power, the second has no optical power, reflecting layers of combiner parallel to the surface of its substrate. Effect: image quality due to the compensation of chromatic aberration and elimination of false images, the use of standard technologies DL the structure, namely, the technique of displaying information, and more particularly to holographic systems information input from the display field of view of the operator, and can be used in simulators, video games, different modes of transport, particularly cars. There is a problem of introduction of information from the display field of view of the operator, for example the driver of a vehicle. As the display information can be measured by the instruments, type of terrain in the infra-red rays in conditions of poor visibility, navigation map, etc., the Solution of this problem allows to see the current information without being distracted from driving. This improves the ergonomics of the Board and increases the safety of the driver. Known holographic optical display system information in the field of view of the operator [1] including light emitting display, optically associated with the reflective holographic optical element (hoe) and spectral-selective reflective optical element mounted parallel to the reflective hoe. Both optical element are used to form the image display field of view of the operator. Spectral-selective reflective op the treatment phosphor of the display, and the window for the rest of the radiation region of the spectrum. This element received in the literature the name combiner, i.e. part-time beams of the past and reflecting from the light. Thus, the image information from the display is superimposed on the operational situation, which the driver while driving. The use of hologram elements provides a simple and compact optical system that allows the use of such information display system in the cabins of different vehicles. Parallel one relative to another location of the first and second reflective optical elements to correct for chromatic aberration of the optical system. However, when using this optical system field of view interferes with false images due to reflection of light from at least the front surface of the first and the front surface of the second holographic optical elements. These false images are displaced relative to the base (true) image and are in the field of view of the operator, which makes it work. Known holographic optical display system informacja to each other, moreover, the angle A1 of the reflective hoe and the angle of diffraction beam B1 in this hoe, and the angle A2 at combiner and the angle of diffraction beam B2 on kombinere associated with the angle q approximate ratiocos(B1-q)/cosB1-(sinA1-sinB1)/(sinA2-sinB2) -1. (1) Installation hoe and combiner not parallel to each other (q 0) allows us to reject a false image from the true and remove them from sight, and the implementation of the approximate condition (1) reduces chromatic aberrations that occur when q 0. In the patent [2] also described holographic optical display system, which is the closest in technical essence to offer. In this system, instead of the reflective hoe installed permeable, allowing you to remove the front reflective surface of the reflective hoe, which is a source of false images. In the case of a transmissive hoe false image can occur only as a result of more than two consecutive reflections from the front and rear surfaces hoe, so the intensity of such interference is substantially less than with a single reflection and can be neglected. Thus, the use of transmissive hoe eliminates false is what the system is the presence of visual disturbances in the form of colored stripes in the field of view of the observer. These bands arise due to the diffraction of a beam on an additional surface hologram structure of combiner, which is formed simultaneously with the main volume hologram structure due to the tilt angle A2-B2 layers of the recorded interference pattern relative to the surface of the holographic recording medium and output layers on this surface. The specified slope is a consequence of the conditions of inequality angles A2 and B2, resulting from (1). Also, because the hologram combiner has optical power, changing its position and orientation in any direction relative to the other elements of the optical system significantly affects the image settings. Therefore, the alignment is poor combiner, due to the presence of accelerations and vibrations of optical elements in a moving vehicle, leads to a significant deterioration in the image quality and reduce its brightness. For the same reason, to obtain high-quality and vivid images with increased accuracy hologram optical element and combiner. The proposed display system allows you to eliminate these disadvantages and to significantly improve kusich holograms, United immersion substance, and combiner made so that the reflective layers on the front with respect to the observer surface of combiner parallel to this surface. The use of such a block transmissive holograms allows you to compensate for chromatic aberration introduced by each hologram and remove false image associated with the reflection of light from surfaces of holograms, and the unit as a whole. The reflective layers of combiner parallel to the substrate, so combiner can be performed using as holographic technology, and more simple and well-developed technology for deposition of thin layered structures. With this arrangement of the layers does not occur the surface of the diffraction grating, leading to the formation of colored stripes in the field of view of the operator. In addition, because kombinera in accordance with the principles of their work, the total thickness of the reflective layer has a value of the order of several wavelengths of light visible range of the spectrum, using layers parallel to the substrate, the beam reflected diffraction layered structure, and the beam reflected by the surface of the layered structure, are distributed in one healthy lifestyles is connected with the reflection of light from the surface of combiner. Compared with the prototype, combiner has no optical power, so its displacement during operation is significantly less critical to the degradation of the quality and brightness of the image. For this reason significantly reduced requirements for precision alignment during Assembly of the optical scheme. In Fig. 1 shows a schematic diagram of the device of Fig.2 and 3 schemes recording of holograms of Fig.4 scheme of recording a hologram of combiner. The optical scheme contains consistently located in the course of the beam of the display 1, the hologram optical element 2 represents a block of two transmissive holograms 3 and 4, connected by a layer of immersion transparent substance 5 having a refractive index equal to the refractive index of the recording media of both holograms, combiner 6 mounted on the windshield 7, and the recording device 8. In Fig.1 mark: - the angle of incidence of the light ray from the display on the hologram 3; is the diffraction angle of the beam on the hologram 3; - the angle of incidence of the beam on the hologram 4; is the diffraction angle of the beam on the hologram 4. The device operates as follows. The beam of light from the display 1 falls on the hologram optical element 2 consisting of two transmissive g of the optical element 2 is set for light with an operating wavelength of the angle of incidence of the beam on the hologram 3 is equal to the angle of diffraction of the beam at the output of the hologram 4 and the diffraction angle of the beam at the output of the hologram 3 is equal to the angle of incidence on the hologram 4. Hologram optical element 2 is made so that the hologram 3 has an optical power, the hologram 4 has no optical power. The hologram 3 is recorded on the photographic plate by means of two spherical wavefronts incident on the photographic plate from the same side under the equal to and opposite angles (Fig.2). The spherical wave front of the reference source is divergent, and the spherical wave front of the object source is convergent. Thus, the transmissive hologram 3 is made with optical power. Transmissive hologram 4 recorded using two flat wavefronts incident on the surface of the plates with one hand is equal to and opposite angles (Fig.3). Hologram 4 has no optical power. When using hologram technology combiner write it down using two flat wavefronts incident on the surface of Fotolia from different sides at the same angle equal to the angle between the normal besause with each other through a layer of immersion substance in a single unit so that the beam, difragirovavshej on the hologram 3, falls on the hologram 4 at an angle equal to the angle of incidence of the reference wave front when recording the hologram 4. Combined thus holograms 3 and 4 represent the hologram optical element 2 having optical power and the corrected chromatic aberration. As immersing substances can be used, for example, an optical adhesive. Combiner is, as a rule, a multilayer structure. When the arrangement of layers parallel to the substrate there is no noise surface diffraction grating. The layered structure of combiner can be formed on a separate substrate that is installed on the windshield, or on the windshield of the vehicle. For the formation of patterns can be used as the technology of deposition of multilayer coatings and holographic technology. In the display quality can be used cathode-ray tube, a matrix of LEDs or a liquid crystal display illuminated by a monochromatic light source. A measuring device is directly the operator's eye. Thus, the proposed device is more than the binary on the windshield and the alignment optical system, and also reduces demands on the rigidity of the holders of optical elements. In addition, in the field of view of the driver there is no interference in the form of colored stripes. Was made the layout of the device made according to the scheme depicted in Fig.1. As the display was used a cathode-ray tube on the screen which served as the text information from your computer and grayscale information from the TV camera. Light with a wavelength of 546 nm with the screen of the cathode-ray tube entered the transmissive holographic optical element 2, which was made in the form of bonding (thickness of the adhesive layer 0.1 mm) of the two transmissive holograms recorded using the laser recording schemes depicted in Fig.2 and 3, a photosensitive layer ukrainophones gelatin. The total efficiency of the hologram element 2 at a working wavelength of 85% Then the beam was admitted to combiner 6, which was performed on the glass substrate that mimics a fragment of the windshield 7. Combiner was made in two versions: with the technology of vacuum deposition and holographic method according to the scheme record depicted in Fig.4. The diffraction efficiency of holographicimage to the dimensions of a new car model, developed AZLK. Visual reception of information was carried out from the driver's seat. Research layout installed on the test bench, showed a high image quality in the field of view of the driver. The layout is supposed to be used by the manufacturer for future car models. HOLOGRAPHIC OPTICAL DISPLAY SYSTEM INFORMATION in the field of view of the operator, containing the display, optically conjugated with him the site of formation of the image display screen in the field of view of the operator, consisting of a transmissive holographic optical element and combiner installed on the windshield, wherein the hologram optical element is designed as a block of two holograms, coupled with a layer of immersion substance and recorded so that the angle of incidence of the beam on the first hologram is equal to the angle of diffraction of the beam at the output of the second hologram and the diffraction angle of the beam at the output of the first hologram is equal to the angle of incidence of the beam on the second hologram, the first hologram has an optical power, the second has no optical power, reflecting layers of combiner parallel to the surface of its substrate.
|