Imaging system of three-dimensional circular behind-cabin environment for simulators of weapons, military and special equipment (stvkzo "kolodets-3d")
SUBSTANCE: invention relates to training and training facilities and can be used in weapons simulators, military and special equipment for simulation of circular behind-cabin environment. Imaging system of three-dimensional circular behind-cabin environment for simulators of weapon, military and special equipment consists of segments of cylindrical screen, enabling viewing angles of 360 degrees in horizontal and 180 degrees in vertical, and segments of spherical screen, enabling viewing angles of 180 degrees in horizontal and 110 degrees in vertical direction, video projectors and blackout system frame. Data display system is built in multichannel scheme.
EFFECT: screen complexes are installed in building, built on model project, or premises, providing design requirements of operational documentation on simulators.
1 cl, 3 dwg
SUBSTANCE: optical system magnifies an image formed by an image modulator and projects said image on a screen. The optical system includes an optical lens system consisting of at least one lens with a positive optical power, having a single optical axis and which forms almost parallel beams coming from the image modulator, an aperture diaphragm situated near the back focal plane of the optical lens system, a catadioptric optical system consisting of a concave mirror and at least one lens, having a single optical axis and which forms an intermediate image in front of the concave mirror. The following relationships are satisfied:
EFFECT: reduced dimensions of components, improved image quality and improved comfort owing to projection of the image sufficiently higher from the projector.
12 cl, 10 dwg, 3 tbl
SUBSTANCE: device has a light source unit and a projection unit. The light source unit comprises solid-state light sources and a section for merging and concentrating light using a condensing lens. The projection unit comprises an optical modulator and an optical projection section. The units comprise adjustment mechanisms which allow optical axes of the condensing lens and the incident light beam to coincide with each other when the light source unit and the projection unit are connected to each other. The adjustment mechanism of the light source unit has a mechanism for holding the housing and a surface for positioning the light source unit on the outer surface of the housing of the condensing lens. The adjustment mechanism of the projection unit has a surface for positioning the projection unit on its outer surface. The positioning surfaces of the light source unit and the projection unit are adjacent to each other. In a second version, the light source unit has protrusions which serve as its base surfaces opposite the projection unit when the solid-state light sources are connected to the projection unit. The projection unit has outer protrusions which serve as base surfaces for adjoining to the corresponding base surfaces of the light source unit.
EFFECT: avoiding the need to adjust optical axes when replacing solid-state light sources and enabling projection of images at a level where characteristic brightness of multiple light sources is maintained.
3 cl, 11 dwg
SUBSTANCE: device comprises multiple displays with one host device and multiple slave devices to support data exchange with host device. Each said display comprises micro-mirror DMD to modulate light source light. Screen projects image by modulated DMD output light. RGB-brightness sensor defines brightness of light from DMD in OFF-state. Host device setting module to set brightness magnitude equal for all displays in compliance with set magnitudes. Every display additionally comprises brightness/chromaticity correction module to control brightness/chromaticity of image displayed on screen on the basis of set magnitude.
EFFECT: constant brightness/chromaticity for several screens.
10 cl, 8 dwg
SUBSTANCE: optical system is meant for varying the shape of a surface on which an image is perceived, and has first and second spaced-apart partial reflectors, at least one of which is selectively switchable between a non-flat first shape and at least one second shape different from the first shape, and providing a light path for light incident on the first reflector. On said light path there is at least partial transmission of light through the first reflector towards the second reflector, at least partial reflection of light from the second reflector back towards the first reflector, at least partial reflection of light from the first reflector towards the second reflector, and at least partial transmission of light through the second reflector. In the display, the first reflector is placed between the display device for modulating light with the image and the second reflector.
EFFECT: transforming a flat or non-flat image to a non-flat or flat image.
47 cl, 50 dwg
SUBSTANCE: optical system has an optical modulator, an optical inversion system which forms an intermediate image plane which is projected by the frontal optical system onto a mirror which reflects the image onto a screen. The optical modulator has red, green and blue colour components which can be shifted. The optical inversion system has more than two groups of lenses which can move along the optical axis in order to change the size of the image. The shape and arrangement of lenses of the frontal optical system are such that chromatic aberrations resulting therefrom are partially compensated for by shifting intermediate images along the optical axis, formed by each of the colour components of the optical modulator, and the shifting of intermediate images is compensated for by shifting optical modulators of the colour components. The distances between the intermediate image plane and the reflecting mirror, between the optical axis and the edge of the intermediate image plane, between the plane of the optical modulator and the reflecting mirror and between the optical axis and the edge of the plane of the optical modulator satisfy conditions given in the claim.
EFFECT: higher luminosity, angle of view, magnification range, image quality and shorter projection distance with compact sizes.
9 cl, 12 dwg, 5 tbl
FIELD: information technologies.
SUBSTANCE: display device generates the received content to the display and generates image signals to multiple image projectors. In response to generated image signals, multiple image projectors project images to the area of the display surface, which is separate from the display. Multiple devices of image capture arranged around the display device operate in process of a calibration procedure and/or balancing of multiple image projectors for calibration and/or balancing of projected images.
EFFECT: invention provides for the possibility to project multiple parts of an ambient image.
15 cl, 3 dwg
SUBSTANCE: system has an optical modulator, an optical transfer part, an optical projection part, an aspherical mirror and a reflection shield. The optical transfer part has an inherent part which includes at least one optical element lying on a first optical axis. The optical projection part has an inherent part which includes at least one optical element lying on a second optical axis which is shifted from the first optical axis. The optical transfer part and the optical projection part have a common part which includes at least one reflecting and one refracting optical element. The inherent part of the optical transfer part transmits light beams from the optical modulator to the common part which transmits light beams in the forward direction from the inherent part of the optical transfer part to the reflecting element on which an intermediate image forms, and in the reverse direction from the reflecting element to the inherent part of the optical projection part which guides light beams to the aspherical mirror.
EFFECT: reduced weight and dimensions.
6 cl, 7 dwg
SUBSTANCE: light-emitting diode digital projector for forming an image on a screen in which the image formed by light sources is projected onto the screen using an objective lens. The objective lens is made with possibility of movement of the projected image on the screen such that the image of each light source periodically moves on a closed path. The array of light sources and the objective lens can move relative each other on a closed path. The objective lens is made in form of an array of lenses, where the array of lenses is made in form of several separate lenses inserted into a disc which can rotate about its own axis.
EFFECT: increased brightness and resolution of the formed image.
4 cl, 3 dwg
FIELD: safety products.
SUBSTANCE: method of protection of movie - and - video products from screen copying consists in creating jamming countermeasures to illegal copying securing uneven lighting of the projection screen, invisible to the human eye, but perceived by video devices heat radiation during film show. Whereat special covering of the projection screen is used unevenly reflecting light energy of the film-projector in infrared frequencies range.
EFFECT: jamming countermeasures to illegal video shooting during film shows conducted by means of digital and traditional film projectors, securing minimal cost of the jamming method and elimination of any disturbances to the audience.
FIELD: physics; processing of images.
SUBSTANCE: device for formation of images on the screen in which the shone image shaped by a file of light sources is designed on the screen by means of an objective. Thus the device is executed with travel possibility on the screen of the image designed on the screen in such a manner that the image of each light source periodically moves on the closed trajectory, thus the file of light sources and an objective are executed with travel possibility from each other on the closed trajectory.
EFFECT: obtaining of high-quality image on the screen.
10 cl, 10 dwg
SUBSTANCE: invention refers to image projection screen. The screen is provided with transparent carrier and light-diffusing layer covering projective surface specified within screen geometry. The light-diffusing layer is made as a very thin transparent coating film. The film is fixed on separate carrier, an air gap being provided between film and carrier. The gap is extended along the whole surface of film and carrier.
EFFECT: reduced corona effect.
10 cl, 2 dwg
SUBSTANCE: projection screen contains the first and second optical layers, each having external surface and opposite internal surface which profile is designed in the form of pyramidal prism body. Internal surfaces of layers are inserted to each other to make a clearance where the third, fourth and fifth thin optical layers are located, each layer being designed in the form of pyramidal identical elements body having the same shape as internal surfaces of the first and second layers. The third and fourth layers have low refractive index, white the first, second and fifth layers have high refractive index. The fifth layer is made of material with abnormal dispersion of refractive index, the third layer is located on internal surface of the first layer, the fourth layer is located on internal surface of the second layer, and the fifth layer is located between the third and fourth layers. External surface of the second layer is provided with reflecting layer containing supporting layer. Internal surfaces of the first and second layer, as well as the third, fourth and fifth layers, form zigzag structure transmitting projected light beams of specified incidence angle and wavelength due to effect of resonant diffraction and scattering of incoherent ambient light due to reflection from internal surface of the first layer.
EFFECT: increased operational reliability.
9 cl, 6 dwg
SUBSTANCE: projection screen contains successively placed layers as follows: transparent layer composed of microlens array, light-reflecting layer, basis, i.e. light-absorbing layer, which is sandwiched between said transparent layer and light-reflecting layer, and array of transparent windows in said light-absorbing layer that are positioned opposite to microlenses and filled with diffusion medium. Radius of microlenses, RL, meets the following condition: r0 s〉RL〉r0 а, where r0 а is the coherence radius of ambient light, and r0 s is the coherence radius of projected light. Microlenses are made capable to focus more coherent projected light to said windows in the form of spots with sizes equal to that of windows, and less coherent ambient light is focused to said light-absorbing layer and windows in the form of spots with sizes much bigger than that of windows. The light-absorbing layer is made capable to absorb major portion of the ambient light, while transparent windows are made capable to pass the projected light and minor portion of the ambient light to the reflecting coating, which is made capable to reflect the projected light back to windows.
EFFECT: new type of projection screen.
11 cl, 5 dwg
FIELD: lighting engineering.
SUBSTANCE: screen is a hollow body limited by semi-transparent diffuse-dispersing cover, inside which means for forming video images are positioned: video projectors, laser projectors, lighting equipment, acoustic elements, light-dispersing particles generators. Device can be mounted in any point of space and can be moved during stage action. Different variants of composition of means for forming video images are available using fiber-optic elements and semiconductor lasers.
EFFECT: higher personnel safety, broader functional capabilities, higher efficiency.
26 cl, 9 dwg
FIELD: optical engineering.
SUBSTANCE: method is based upon exposure of parts of light-sensitive medium by speckle pattern and subsequent processing of the medium. Exposed parts of light-sensitive medium have central and surrounding peripheral areas; the parts overlap each other with their peripheral areas. Exposure in central area is equal to preset value and exposure in peripheral area decreases linearly from preset value at its boundary with central area till zero at the boundary of exposed part. Shape, sizes and mutual disposition of exposed parts are chosen to provide constant exposition on whole surface of light-sensitive medium is constant and equals to preset value after process of exposure is finished. Indicatrix of diffusion is provided to be constant along the whole surface of speckle-diffuser at big sizes of speckle-diffuser.
EFFECT: improved efficiency.
3 cl, 6 dwg
FIELD: mechanical engineering.
SUBSTANCE: method concludes in locating and spacing of spherical surface to sections followed by subsequent mounting. Sections are located and spaced within preset sizes of screen in form of spherical surface reamer consisting of regular spherical pentagons and hexagons having stiffening rib along any face of a section. Length of chord between edge points of face of any section is chosen from relation of 1=2r cosΘ ; Θ=arctg 2cosβ/cosγ; γ=arcsin (sinα/sinβ); where r is radius of sphere, β=30°, α=54°. To make the screen of preset size the screen can be supplied with elements in form of truncated spherical penta- and/or hexagonal sections.
EFFECT: improved reliability; increased precision of making of spherical surface curvature.
2 cl, 2 dwg
FIELD: building, agriculture, trade and transport, particularly for building forcing frames and greenhouses.
SUBSTANCE: coating includes web of covering material, several strips having connection members to secure coating to frame. Connection means are clamps, straps or resilient cords.
EFFECT: reduced film damage and wear due to film tightening over the whole surface thereof.
3 cl, 12 dwg