Matches 251 - 300 out of 482 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
5606433 Lamination of multilayer photopolymer holograms  
A process for making a multilayer photopolymer hologram structure without intervening adhesive layers between component photopolymer layers. The process includes the steps of exposing a first...
5602656 Apparatus and method for monitoring holographic light protection filters  
Method and apparatus for monitoring wavelength shift in a holographic light protection filter to determine if the hologram has been damaged by moisture. The hologram is provided with first, second...
5569565 Hologram recording material  
A hologram recording device, which comprises a recording layer of a polymer composition a photoconductive element, a second-order super-polarization element and an electron or hole capturing...
5566387 Diamond shaped holographic storage regions oriented along a common radial column line for higher storage density  
A disk-based holographic storage media includes a disk fabricated from a holographic storage media. A plurality of holographic storage regions are defined within the storage media such that pages...
5559613 Photorefractive device with quantum wells  
A photorefractive device intended to be exposed to a marking radiation which is provided so as to create a grating of interference fringes in the device and to a reading radiation diffracted by the...
5550779 Holographic memory with angle, spatial and out-of-plane multiplexing  
The invention is embodied in an optical memory having a holographic recording medium capable of storing respective holograms in respective storage spots, the memory including a coherent collimated...
5550654 Method for forming, in optical media, refractive index perturbations having reduced birefringence  
A method is described for selectively modifying the refractive index of an optically transmissive body having an optical propagation axis. According to this method, polarized, actinic radiation is...
5546198 Generation of selective visual effects  
A method and a viewing device for generation of selective visual effects. The method entails encoding a holographic optical transparency for generating pre-selected patterns of light when...
5543251 Method of recording plural holographic images into a holographic recording material by temporal interleaving  
Holographic images are constructed in a recording material in accordance with a temporal interleaving technique in which a first set of images is constructed for a predetermined first imaging time...
5539542 Photorefractive device having an electro-optical material between two photoconductive materials  
A photorefractive apparatus is exposed to a write beam or radiation for creating a system of interference fringes in the apparatus, as well as to a read beam or radiation which diffracts the system...
5530564 Holographic interference exposing device  
A holographic interference exposing device using a visible laser source and a chopper to easily align the optical system while confirming the light path of the laser beam with the naked eye. The...
5528402 Addressable electrohologram employing electro-optic layer and patterned conductor between two electrodes  
An electrically addressable wavefront-modulation device has a thin film of transparent conductive material finely patterned as a hologram in which individual fringe elements need not have...
5519516 One way holograms  
A hologram structure including a hologram layer including a half-tone pattern of transparent areas and reflection hologram areas, and a non-hologram half-tone pattern of areas that are...
5517336 Display card with interactive imagery and method of producing same  
A display card is provided on one surface thereof with two images which appear to an observer to be interacting. One of the images is provided on the card by quality ink printing such as...
5517339 Method of manufacturing high efficiency, broad bandwidth, volume holographic elements and solar concentrators for use therewith  
An improved method of manufacturing holographic elements for solar concentrator, which is a necessity for the future of viable low cost solar power. Utilizing extremely high relative humidity...
5511058 Distortion correction of a reconstructed holographic data image  
A detected image output by a holographic storage system is comprised of a grid of dark and light spots, representing high and low logic states. The image is superimposed onto a grid of detector...
5508829 LTG AlGaAs non-linear optical material and devices fabricated therefrom  
A light responsive device (10) has a body (12) that includes a matrix comprised of Group III-V material, the matrix having inclusions (14) comprised of a Group V material contained therein. The...
5504593 Continuous and uniform hologram recording method and uniformly recorded hologram  
A hologram recording method wherein a transparent member for introducing a light beam into a recording material is designed so that the transparent member and the recording film can be uniformly...
5500310 Holographic flake pigment  
Holographic flake pigments, processes for making the pigments, decorative coatings comprising the pigments, and articles comprising the decorative coatings are disclosed. The pigment comprises...
5499117 Transfer of photopolymer hologram from a curve surface to another curve surface  
A method for transferring a photopolymer hologram from a curved exposure surface to a curved application surface including the steps of forming a release layer on the exposure surface, forming a...
5497254 Optical apparatus including a liquid crystal modulator  
An optical apparatus for controlling a wave front of a coherent light including at least a coherent light source, an electrically addressable liquid crystal device having a plurality of pixels...
5492370 Decorative article  
The article includes a substrate which is composed of a single ply that contains both a structure for generating a viewable optically variable effect, such as a hologram, and carries an indicia...
5491569 High efficiency, broad bandwidth, volume holographic element for diffraction windows and method of manufacture  
A high efficiency, broad bandwidth, volume holographic element for diffraction windows. This holographic element is fabricated so that it can passively track and diffract solar radiation throughout...
5483365 Method for holographic storage using peristrophic multiplexing  
A peristrophic multiplexing system directs a signal light beam and reference light beam onto a selected recording spot in the recording medium. The light beams collectively define a plane of...
5477347 Method and apparatus for isolating data storage regions in a thin holographic storage media  
A holographic storage media for storing digital data in the form of an interference grating is provided which includes a substrate (48) over which a perforated opaque structure (50) is disposed....
5471328 Segmented image holographic disks  
A hologram structure including a plurality of holograms having substantially identical reconstruction characteristics disposed on a substrate for rotation about a rotation axis and containing...
5466548 Method for producing nanometer order dot pattern by electron holography and drawing apparatus for the same  
In a nanometer order dot pattern producing method and drawing apparatus by electron holography, a nanometer order dot pattern is readily produced with a high accuracy, using a pair of biprisms or...
5464710 Enhancement of optically variable images  
The optically variable image in optically variable imaging devices, such as holograms, kinegrams, pixelgrams and interference gratings, is enhanced by coating the image relief or interference...
5453339 Method for producing a non-uniform holographic element on a glass pane  
In a windshield having a holographic element integrated in the windshield for example a reflection hologram for reflecting optical information into the visual range of the driver, the edge region...
5432771 Information recording/reproducing apparatus for performing recording/reproduction of information by using probe  
A recording/reproduction of information is effected using a probe electrode arranged to oppose a recording medium. A distance between the probe electrode and the recording medium is controlled by...
5422745 Preparation of permanent photowritten optical diffraction gratings in irradiated glasses  
A fast process for photowriting a permanent, high efficiency optical grating comprises darkening glass by irradiation and photobleaching the darkened glass by exposing the glass to interfering...
5397662 Process for forming a polymerized material and presenting holographic images  
A photopolymerizable composition includes a water-insoluble olefinic compound that is polymerizable with free-radical initiators, an oil-soluble phenothiazine dye that is soluble in...
5383038 Holographic optical memory using semiconductor microcrystallite doped glasses and method using same  
There is described a semiconductor microcrystallite doped glass that exhibits SHG, and a method of preparing, or encoding, a semiconductor microcrystallite doped glass by the simultaneous injection...
5374492 Purple membrane preparations having increased holographic diffraction efficiency  
Purple membrane preparations having an increased holographic diffraction efficiency. The purple membrane preparations have a diffraction efficiency of less than 5 seconds and a resolution of...
5363220 Diffraction device  
The present invention provides a diffraction device having a high diffraction efficiency with respect to a wide-band radiation beam. A diffraction device comprises a substrate and a diffraction...
5361148 Apparatus for photorefractive two beam coupling  
The present invention relates to an improved process for producing photorefractive net gain two beam coupling utilizing polymeric materials.
5352582 Holographic based bio-assay  
An apparatus detects a target reactant that binds to an immobilized reactant. The apparatus generates a holographic image at a predetermined location when the reactants are present and bound to one...
5344808 Intermediate transfer medium and process for producing image-recorded article making use of the same  
An intermediate transfer medium comprises a heat-resistant base sheet and provided thereon a release layer and an image-receiving adhesive layer on which an image pattern is formed by a sublimation...
5339305 Disk-based optical correlator and method  
The correlation speed and storage capacity of an optical disk-based correlator is enhanced by employing a thick (several hundred micron) photo- polymeric film (or other thick holographic media) on...
5337169 Method for patterning an optical device for optical IC, and an optical device for optical IC fabricated by this method  
A method of patterning an optical device for an optical IC whose purpose is to diffract a light beam incident on one surface of a device substrate to cause a light beam to emerge from another...
5331444 Moisture-insensitive holograms and method for making the same  
Reflection holograms to be viewed through the front side of a transparent and preferably flexible substrate, and which are insensitive to moisture in liquid and in vapor form, are produced by...
5315417 Low noise transmission holographic optical element  
A holographic recording medium is treated to reduce or eliminate unwanted extraneous diffraction in a volume transmission hologram. Surface regions of the medium are desensitized either before or...
5313315 Method of imaging through a scattering medium using coherent light  
In a conventional hologram, a photographic film records the interference pattern of monochromatic light, scattered from an object (20) to be imaged, with a reference beam of unscattered light....
5300169 Transfer foil having reflecting layer with fine dimple pattern recorded thereon  
A method wherein a hologram is transferred from a transfer foil formed with a fine dimple pattern and having a reflecting layer, and information, e.g., an image or a character, other than...
5293272 High finesse holographic fabry-perot etalon and method of fabricating  
A high finesse holographic Fabry-Perot etalon and method of making a high finesse holographic Fabry-Perot etalon is disclosed. Particularly, a holographic Fabry-Perot etalon which achieves high...
5291315 Method of obtaining hologram and an exposure apparatus  
A hologram exposure apparatus for and method of obtaining a hologram using a photoresist for an in-line type interferometer wherein a photoresist substrate is detachably mounted on a substrate...
5282066 Multiple layer holograms  
Multiple layers or holographic exposures and methods for preparing multiple layers of holographic exposures are described. The multiple layers of holographic exposure combine to form holographic...
5276537 Diamondlike carbon thin film protected hologram and method of making same  
A diamondlike carbon thin film protected hologram comprises an organic film deposited on a substrate and recorded to form a hologram, and a diamondlike carbon thin film deposited on the hologram,...
5272550 Hologram system  
A first volume hologram diffracts a portion of the beam of light as a first beam and transmits the remaining portion of the beam of light as a second beam. A second volume hologram diffracts either...
5260149 Photopolymerizable compositions in elements for hologram imaging  
Solid photopolymerizable compositions and photosensitive elements are provided that are useful in preparing optical elements, and especially holograms. The composition contains a polymeric binder,...
Matches 251 - 300 out of 482 < 1 2 3 4 5 6 7 8 9 10 >