Matches 51 - 100 out of 217 < 1 2 3 4 5 >
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6700686 System and method for holographic storage  
The present invention provides a solution to the needs described above through a system and method for holographic storage. The system comprises a laser light source, a first beam splitter for...
6697180 Rotation correlation multiplex holography  
Holography in which an array of overlapping holograms is recorded or reconstructed in a recording medium, holograms being produced by interference of a reference beam and a signal beam, in which...
6571043 Large screen fiber optic display with high fiber density and method for its rapid assembly  
This invention encompasses a method for the manufacture and rapid assembly of large screen fiber optic displays ( 1, 2 ) containing a very large number of individual fibers (thousands to hundreds...
6548820 Optical synthetic aperture array  
A synthetic aperture system for producing a non-periodic pattern in a region of overlap. The system includes a source of electromagnetic radiation producing a plurality of electromagnetic beams, a...
6522311 Image information displaying system and hologram display apparatus  
An image information displaying system comprises a transparent support, a hologram screen attached to the transparent support, a radiation unit for radiating image information on the hologram...
6486982 System for making a hologram of an image by manipulating object beam characteristics to reflect image data  
A system for converting an image into a hologram formed from diffraction gratings includes obtaining image data for each pixel in an image to be converted, putting it into digital form and using...
6473208 Two-color holographic recording apparatus  
A two-color holographic recording apparatus reduces error signals possibly included in reproduced digital data signals. The two-color holographic recording apparatus has first, second and third...
6466372 Systems for projecting images from diffractive phase plates  
A system for projecting images is provided having a group of diffractive phase plates each encoded with different image information which have phase shifts aligned to reconstruct visible images in...
6445470 Apparatus for simultaneous spatial modulation of incoherent/coherent angulary multiplexed optical beams  
Novel apparatus for simultaneous spatial modulation of a set of angularly multiplexed individually coherent but mutually incoherent optical beams is disclosed, comprising means for generating a set...
6396985 Contoured large screen display apparatus  
An apparatus for use in contoured architectural milieus includes a contoured large screen display having a mounting means to which modular flat display tiles including, tiles of diverse or...
6377367 Method of recording and reproducing hologram and apparatus for recording and reproducing hologram  
The first reading beam identical to the first reference beam and the second reading beam conjugate to the second reference beam are simultaneously applied to a hologram recording medium 1, on...
6356854 Holographic object position and type sensing system and method  
Systems and methods for determining the position and classification of an object and which may provide signals that control deployment of an active restraint device, for example. Using a pulsed...
6348983 Holographic storage medium having enhanced temperature operating range and method of manufacturing the same  
A holographic storage medium, a method of manufacturing the holographic storage medium and a holographic storage device incorporating the storage medium. In one embodiment, the holographic storage...
6330361 Adaptively aligned optical correlator and method  
An improved optical correlator using a coherent light beam employs a method of adaptive alignment. A test pattern modulates an input spatial light modulator. The modulated beam propagates through...
6330088 Method and apparatus for recording one-step, full-color, full-parallax, holographic stereograms  
The present invention concerns methods and devices for creating and printing variable size and variable resolution holographic stereograms and holographic optical elements using computer rendered...
6322932 Holographic process and media therefor  
High storage densities using a holographic system are achievable using a stratified medium while maintaining a relatively high selectivity upon reconstruction of the stored images. Such combination...
6304703 Tiled fiber optic display apparatus  
A fiber optic display apparatus consists of a plurality of optical fibers which convey a projected image from an input, or first surface, to a display, or second surface, whose area is greater than...
6285474 Holographic recording method and filtering method  
A method and an apparatus capable of filtering based on desired spatial frequency characteristics without loss of Fourier spectrum frequency components, and of matched filtering of high recognition...
6281993 Phase shifting element for optical information processing storing systems  
Optical information processor and storage of pixelated data pattern in a Fourier plane of a lens as achieved by a plurality of optical elements operating with a spatial light modulator. A laser...
6268941 Holographic display screen with integrated speckle suppression  
A method for suppressing image speckles in a holographic screen is provided in which the screen is illuminated in the hologram in a plurality of individual steps, changing the recording parameters...
6262818 Method for simultaneous amplitude and quantitative phase contrast imaging by numerical reconstruction of digital holograms  
A method for the numerical reconstruction of digital holograms which allows simultaneously amplitude and quantitative phase contrast imaging. The reconstruction method computes the propagation of...
6246495 Phase-shift digital holographic apparatus  
A phase-shift digital holographic apparatus shifts the phase of a reference wave by a phase shifting means, produces holographic image data by a holographic image pickup means having an image...
6208439 Generalized geometric transforms for computer generated holograms  
A technique for mapping working images to adjacently and continuously tiled subapertures having CGHs on a plate is disclosed with the result that the entirety of a working area of a plate is...
6191875 Process for holography using reference beam having correlated phase content  
An improved process for holography is provided, in which the reference beam used for storage and readout has a correlated phase content. In particular, it was found that reference beams having...
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...
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...
6140660 Optical synthetic aperture array  
A synthetic aperture system for producing a non-periodic pattern in a region of overlap. The system includes a source of electromagnetic radiation producing a plurality of electromagnetic beams, 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....
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...
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...
6088321 Volume holographic memory apparatus having a reference beam and a signal beam with opposite intensity distributions  
A volume holographic memory-based optical information-recording/reproducing apparatus is capable of enhancing density of spatial multiple recording. A recording medium is mounted in the apparatus...
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...
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...
6040883 Programmable hologram generator  
A programmable hologram generator comprises a layered structure of a pixelated VLSI chip, a reflective ferroelectric liquid crystal that is physically disposed on the VLSI chip, and a...
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...
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...
5978112 Non-volatile readout of shift multiplexed holograms  
The present invention is a holographic reconstruction device for reconstructing successive holograms previously recorded by a recording reference beam in a recording medium, each previously...
5963684 Multiple-wavelength optical transceiver  
An optical demultiplexing apparatus is capable of spatially separating a multiplexed optical signal into two or more optical wavelength signals thereof. An input multiplexed optical signal present...
5963346 Scatter noise reduction in holographic storage systems by two-step write  
A method and an apparatus for increasing detection signal-to-noise ratio of a holographic image by compensating for noise characteristics of a holographic storage medium are disclosed. The method...
5959747 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...
5952988 Display having gradient response pixels  
A display includes a plurality of individually electrically controllable pixels. Each pixel has a layer of light controlling medium extending over a predetermined area of the pixel. The light...
5949558 Holographic storage using shift multiplexing  
The invention is embodied in a method of recording successive holograms in a recording medium, using at least a fan of M waves along at least a first axis with a separation angle between adjacent...
5943145 Phase distance multiplex holography  
Selection of individual holograms during read-out of a multiplexed array depends upon varying relative position of the recording medium in the direction orthogonal to the medium surface.
5940514 Encrypted holographic data storage based on orthogonal phase code multiplexing  
An encryption method and apparatus for holographic data storage are disclosed. In a system using orthogonal phase-code multiplexing, data is encrypted by modulating the reference beam using an...
5940193 General purpose quantum computing  
Method and apparatus are provided for a general purpose photonic computer. A data signal is input through an encoder to encode such signal with an instruction. The encoded signal is transmitted by...
5926295 Holographic process and device using incoherent light  
An optical device for generating a signal based on a distance of an object from the optical device. The optical device includes a first polarizer, a birefringent crystal positioned optically...
5896210 Molded block optical system for volume holographic storage  
Molded block optics system (10) writes and reads data from an optical storage medium and includes first molded optics block (12) for receiving reference beam (60) and original object beam (46) that...
5896208 Master hologram for the production of copy-proof holograms  
A method for the production of holograms proof against copying and imitation possessing authenticity features, which are copies of a master hologram. In accordance with the invention as a master...
5892597 Holographic recording apparatus and holographic optical element  
A holographic recording apparatus includes first and second light sources for respectively generating first and second light beams. A mask is located in front of a hologram recording material and...
5887090 Optical network  
An optical interconnection network in which more than one communication can ccur at any give time is disclosed. The interconnection network can form part of a parallel computer, a fiber optic...
Matches 51 - 100 out of 217 < 1 2 3 4 5 >