Matches 151 - 200 out of 438 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
6288804 Positive unit magnification reflective optics for holographic storage  
A positive unit magnification reflective head is used to back-reflect a primary light beam, for storing reflection microholograms at the coincident foci of the primary and reflected beams. Imaging...
6281994 Method and apparatus for three-dimensional holographic display suitable for video image display  
A method and an apparatus for three-dimensional holographic display suitable for moving object display are disclosed. At least one hologram of a display target object is displayed on a display...
6268942 Segmented display system for large, continuous autostereoscopic images  
The present invention is an apparatus and method for displaying large, continuous, autostereoscopic images. The present invention overcomes the size limitation of typical aulostereoscopic images by...
6266167 Apparatus and method for replicating a hologram using a steerable beam  
An apparatus and method are disclosed for replicating a hologram. The apparatus comprises an assembly operable to position a hologram in proximity to holographic recording material. The apparatus...
6236475 Image recording method and apparatus and image reproducing method and apparatus  
An image recording method and apparatus for recording an image on a holographic stereogram in such a manner as to generate an optimum reproduced image, and an image reproducing method and apparatus...
6233083 Light modulation apparatus and optical information processing system  
A light modulation apparatus includes: a light modulation device including first light transmission control elements each for controlling the amount of transmission of a light beam, for generating...
6222651 Holographic resonant system and method  
A holographic resonant system includes a plurality of volume phase holograms superimposed on a single layer of photosensitive film. The volume phase holograms are oriented with respect to one...
6211976 Holographic projection system  
Holographic optical elements (HOEs) can be used in systems and methods for providing illumination and for projecting images. The HOEs may be switchable HOEs, whose diffractive properties can be...
6195184 High-resolution large-field-of-view three-dimensional hologram display system and method thereof  
A real-time, dynamic, free space-virtual reality, 3-D image display system which is enabled by using a unique form of Aerogel as the primary display media. A preferred embodiment of this system...
6191876 Light diffusion control by electrically reconfigurable holographic optical elements  
A system and a method of displaying projected images on a projection screen of the system include one or more reconfigurable holographic optical elements (HOEs) in the screen to optically...
6185018 Holographic stereogram printing system  
A holographic stereogram printing apparatus that is able to formulae a holographic stereogram superior in light utilization efficiency and in picture uniformity. The holographic stereogram printing...
6185016 System for generating an image  
A system for generating an image comprising an illumination system having a light source and a plurality of holographic devices switchable between an active state wherein light from the light...
6178019 System and method for controlling the selectivity of a holographic memory system  
A system and method for controlling the selectivity function in a holographic memory system that permits more rapid location and retrieval of holographically stored data. The system and method...
6175431 Projection systems based on reconfigurable holographic optics  
A projection system and a method of displaying a projected input image on a projection screen of the system utilize one or more reconfigurable holographic optical elements (HOEs) to optically...
6172777 Optical interconnection for holographic memories and method for using the same  
An optical interface of a holographic memory system electrically selects one of several optical pathways to store or retrieve an image from a holographic memory by activating liquid crystal...
6166835 Holographic memory  
Holographic memory including a beam source for emitting a beam, a beam splitter for splitting the beam into a reference beam and an object beam, a hologram memory unit for recording information...
6157473 Holographic storage system incorporated therein a parabolic mirror  
A holographic storage system implements both a rotational and an angular multiplexings in combination. The system comprises a light source, a pair of wedge prisms, a beam splitter, a first, a...
6151143 Methods and apparatus for making holograms including multiple two-dimensional images  
A method and apparatus for making holograms includes a technique for exposing a film substrate or other light-sensitive medium to consecutive two dimensional images, together representative of a...
6128109 Apparatus for incoherent/coherent readout and display of information stored in double angularly multiplexed volume holographic optical elements  
Apparatus is provided for the readout, and in certain applications the display, of information stored within incoherent/coherent double angularly multiplexed volume holographic optical elements....
RE36878 Multi-colored material using rainbow grating  
A decorative multi-colored material and method of making same using rainbow gratings simultaneously evidence different color patterns which change through the color spectrum. The patterns are...
6122081 Using the Talbot Effect for lensless imaging of periodic structures in a holographic memory system  
A holographic memory system which utilizes the Talbot Effect for the lensless, near-field propagation of repeating image planes of periodic structures. Periodic phase structures at one plane in a...
6118560 Scatter noise reduction in holographic storage systems by signal-noise orthogonalization  
A method and an apparatus for increasing detection signal-to-noise ratio, by reducing the effect of optical scatterers from a holographic storage medium, are disclosed. The method comprises the...
6115152 Holographic illumination system  
Holographic optical elements (HOEs) can be used in systems and methods for providing illumination and for projecting images. The HOEs may be switchable HOEs, whose diffractive properties can be...
6115151 Method for producing a multi-layer holographic device  
A method of making a holographic device comprising sensitizing a plurality of layers and stacking the layers to form a composite structure. Each layer is sensitized to at least one color...
6108110 Optical relay for pixel-based holographic storage and retrieval  
A holographic storage and retrieval system for use in co-propagating or counter-propagating geometries having a common optical relay for guiding a signal beam and a reference beam along a common...
6104511 Reflector-based off-axis optical system for holographic storage  
The holographic storage and retrieval system according to the present invention comprises one convex reflector and one concave reflector having the same optical axis. The reflective surfaces of the...
6101009 Holographic data storage and/or retrieval apparatus having a spherical recording medium  
A holographic data storage and/or retrieval apparatus having a spherical holographic recording medium and addressing means for rotating the recording medium to selectively expose the recording...
6101008 Autostereoscopic display based on electrically switchable holograms  
An autostereoscopic display system and a method of displaying a scene in a stereoscopic form on a screen of the system include two or more reconfigurable holographic optical element (HOE) stacks in...
6097513 Holographic memory device  
A holographic memory device includes: a hologram memory part for information recording by using a reference beam and an object beam, the hologram memory part having a plurality of cells; a first...
6094283 Holographic display with switchable aspect ratio  
A holographic display system comprising left and right optical systems is disclosed. The optical systems each comprise an image display operable to display an input image and first and second...
6091521 Light collection from diffractive displays  
A diffractive display system and a method of collecting first order light beams from a diffractive display of the system utilize holographic optical elements (HOEs) to deflect one of two first...
6088140 Segmented display system for large, continuous autostereoscopic images  
The present invention is an apparatus and method for displaying large, continuous, autostereoscopic images. The present invention overcomes the size limitation of typical autostereoscopic images by...
6088139 Method and an apparatus for recording and reproducing using a hologram, an apparatus for irradiating light for reproduction to a hologram, a hologram device and a manufacturing method of the same  
Object rays and reference rays are projected to record interference fringes on a volume hologram comprising a material exhibiting a photoinducing refractive effect, and a reconstructed image is...
6088076 Liquid crystal display apparatus using holographic optical element  
A liquid crystal display apparatus uses a holographic optical element to split the light from a light source for generating white light to R, G and B wavelength light components. The split light...
6082862 Image tiling technique based on electrically switchable holograms  
A projection system and a method displaying a high resolution composite image on a projection screen include a number of reconfigurable holographic optical elements (HOEs) in the projection optics...
6072608 Compact architecture for holographic systems  
An architecture for holographic data storage and processing integrates multifunctional silicon-based optoelectronic devices, rewritable holographic material, optical devices and other...
6072606 Close-lit holographic nightlight display lighting system  
A holographic display system provides a holographic image suitable for use as a nightlight in a dimly lit environment wherein the only light in the field of view of the user is essentially the...
6064586 Method for holographic data storage and retrieval  
A method for holographic data storage comprises the step of formatting a page with calibration marks as well as data patterns representing data. The page is then stored in a holographic storage...
6061154 System and method for steering focal plane data to access data locations in a holographic memory  
Systems and methods for steering a complex, spatially-modulated incident beam of coherent light to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1)...
6052209 Hologram reproduction process and volume hologram  
The invention relates to a method for replicating a volume hologram having an image of a scattering object recorded therein according to a hologram replicating technique, wherein the diffraction 13...
6049402 Multiplexed phase-conjugate holographic data storage using a buffer hologram  
An optical storage system, which includes a temporary buffer and an optical storage medium, allows the practical combination of phase-conjugation and hologram multiplexing. The temporary buffer...
6049401 Volume holographic memory  
A volume holographic memory whose three-dimensional photosensitive body has exposed portions comprised only of continuous faces prevents recording of noise caused by scattered light at the time of...
6043913 Apparatus for producing dot matrix hologram  
An apparatus for producing a dot matrix hologram is provided, which can fabricate a hologram of high quality, simplify the construction, and reduce the cost. This apparatus includes a laser source...
6040930 Volume holographic storage using rotated signal beam encoder  
The data encoder (e.g. an amplitude spatial light modulator, ASLM) in a volume holographic storage system is rotated by 45° relative to the normal to the plane of the reference and signal beams,...
6038043 Method for recording a holographic optical element  
A fingerprint sensor having a holographic phase grating glued on one right angle surface of a prism is described where a light source oriented normally relative to the hypotenuse surface of the...
6031643 Method for holographic storage  
The present invention is a method for optical data storage which enhances the contrast between ON and OFF pixels. The method comprises writing a two-dimensional image comprising a plurality of...
6023356 Image recording apparatus and method  
To produce a rainbow-type holographic stereogram, an object beam is focused in the vertical direction with a cylindrical Fresnel lens. On the other hand, according to the edge-lit scheme, a...
6020985 Multilayer reflection microhologram storage in tape media  
Digital data bits are stored as discrete-level reflection microholograms in a multi-depth digital optical data storage system. Reference and signal beams are incident in a counterpropagating...
6018402 Apparatus and method for phase-encoding off-axis spatial light modulators within holographic data systems  
Embodiments of the invention include an off-axis amplitude and phase encoding optical system, apparatus and method of storage in which a holographic optical element (HOE) is used advantageously to...
6000804 Colored light retroreflective material and retroreflective hologram reconstructor using the same  
To provide a retroreflective material which has high utilization efficiency of light and which can give a reflected light to various color tones: the retroreflective material in accordance with the...
Matches 151 - 200 out of 438 < 1 2 3 4 5 6 7 8 9 >