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5767993 |
Holographic display transmitting device
A holographic apparatus for continually sensing, transmitting and reconstructing a three-dimensional image including a device for receiving a holographic interference pattern such as a video...
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5764390 |
Holographic method for generating three dimensional conformal photo-lithographic masks
A three-dimensional photo mask is formed from a substrate having a first side and a three-dimensional side. A hologram is provided on the first side of the substrate. The three-dimensional side of...
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5734485 |
Large display composite holograms and methods
A composite hologram incorporates a plurality of hologram tiles arranged for display, each of the hologram tiles formed by exposing each of a plurality of different unexposed photographic plates...
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5716695 |
Cross-laminated multilayer film structures for use in the production of banknotes or the like
A laminated multilayer film substrate for use in the production of banknotes. The film substrate includes a first layer comprising at least about 50 weight percent of a high density polyethylene...
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5710645 |
Grazing incidence holograms and system and method for producing the same
A method and system for recording and displaying grazing-incidence (i.e., steep reference beam angle) holograms supported on a substrate having thin edge-illuminatable geometry. The system and...
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5706107 |
Windshield grating hologram for increasing bus driver's field of view
A holographic viewing apparatus for allowing an operator of a bus to view a portion of a blind spot region located in front of the bus and below the windshield of the bus. The holographic viewing...
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5706106 |
Graphic works involving holography
A substrate bears holographic imagery, selected portions of which are covered by non-holographic imagery printed in predetermined geometric registry with the holographic images. Multiple replicas...
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5703703 |
Holographic ornament
A holographic ornament comprises a hologram which has an operative surface. In one embodiment, the operative surface is masked by a masking member. The masking member is formed with at least one...
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5703702 |
Holographic synthesis
A tight packed array of amplitude controlled in-phase light emitters produces dynamic real holographic images. A partially reflecting mirror is applied to a planar array of amplitude controlled...
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5700550 |
Transparent hologram seal
A hologram forming layer, transparent evaporated layer, colored layer, adhesion anchor layer, and adhesive layer are sequentially laminated on the under surface of a base member. The laminated body...
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5698345 |
Photosensitive recording material, photosensitive recording medium, and process for producing hologram using this photosensitive recording medium
A photosensitive recording material comprising a solvent-soluble, thermosetting epoxy oligomer capable of cationic polymerization, an aliphatic monomer having at least one ethylenically unsaturated...
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5698343 |
Laser wavelength detection and energy dosimetry badge
A new personal laser dosimetry badge records intentional or unintentional exposure to laser radiation. A Fresnel biprism is mounted over a layer of photopolymerizable material, preferably a...
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5695894 |
Method and apparatus for changing the scale of a pattern printed from a total internal reflection hologram
An apparatus is disclosed for changing the scale of a pattern printed from a total internal reflection hologram into a photosensitive layer, which apparatus includes means for reconstructing an...
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5694230 |
Diffractive optical elements as combiners
A combiner for combining light traveling on two optical paths to permit coincident viewing of the light includes a light-transmissive substrate having first and second surfaces, the first surface...
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5691830 |
Holographic optical system including waveplate and aliasing suppression filter
A holographic optical system includes volume hologram configurations providing a waveplate for, e.g. an optical storage device, and an aliasing suppression filter. The waveplate has diffraction...
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5654116 |
Hologram
A hologram comprising a diffraction grating film with an interference fringe recorded thereon, a substrate provided on one side of said diffraction grating film, and cover plates provided on the...
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5633100 |
Holographic imaging using filters
This invention relates to a process for forming a reflection hologram. A process for forming a volume reflection hologram is provided wherein the formation of secondary holograms is suppressed by...
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5631107 |
Method for producing optical member
Disclosed is a method for producing an optical member having excellent optical characteristics. An optical member is composed of a support plate and an optical sheet stuck on said plate via an...
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5627663 |
Secure optical identification method and means
In a preferred embodiment, a method of providing secure identification for an article, including: providing on the article a diffraction grating strip including a pattern of a series of diffraction...
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5621547 |
Illumination device and application to a display device
The invention relates to an illumination device in which a holographic device (HP i ) separates the polarizations of an incident beam. The resulting polarized beam is transmitted to a holographic...
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5613022 |
Diffractive display and method utilizing reflective or transmissive light yielding single pixel full color capability
The present invention is directed to a diffractive display suitable for presenting graphic and the like displays. Broadly, the novel display is realized from a diffraction pattern (132) carried by...
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5607799 |
Optical photorefractive article
The present invention relates to a three-component optical photorefractive article having improved diffraction efficiency. The article comprises (i) nonphotoconductive polymer, (ii)...
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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...
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5602657 |
Hologram system having hologram layers with rotationally offset Bragg planes
A hologram system is comprised of two identical volume holograms. Both holograms have Bragg planes oriented perpendicular to the surface of the hologram. The first volume hologram separates a...
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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...
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5593765 |
Holographic image containing foil-textile laminate
A process for the production of a flexible laminate having an outer and visible layer which provides a holographic effect. A metal foil bearing a holographic image and a layer of plastics size is...
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5589956 |
Image display apparatus
An image display apparatus includes a plurality of image display elements respectively assigned to different partial image information regions of an image to be displayed, and a hologram optical...
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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...
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5557701 |
Power laser delivery fiber system with enhanced damage threshold
A flexible fiber optic delivery system for medical and industrial applications is described that can transmit high laser power densities and optical images. A parabolic-index profile of a...
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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...
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5535024 |
Photorefractive holographic interference novelty filter
A novelty filter utilizes self-nulling and self-aligning of reflection and transmission phase conjugate beams. A photorefractive crystal is arranged so that the contributions to the phase conjugate...
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5529861 |
Method for enhancing the utility of a photopolymer recording media for holographic data recording
A holographic storage media (10) is fabricated from a thin layer of photopolymer recording media. The photopolymer recording media is disposed between a substrate (48) and a capping layer (56). The...
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5526144 |
Optical system with pivoting hologram
An optical data storage system includes a pivotally mounted hologram. Rotation of the hologram results in beam displacement at the optical medium for purposes of fine tracking. The hologram is...
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5517338 |
Composite mirrors
Composite mirrors on a substrate comprising a mixture of up to 20 percent of polymer and at least 80 percent of metal clusters, e.g. of gold, palladium or silver, which have a nominal diameter less...
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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...
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5510911 |
Holographic image containing foil-textile laminate and process for the production thereof
A process for the production of a flexible laminate having an outer and visible layer which provides a holographic effect. A metal foil bearing a holographic image and a layer of plastics size is...
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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...
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5500311 |
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...
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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...
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5491570 |
Methods and devices for using photorefractive materials at infrared wavelengths
A method of writing plane holographic gratings Bragg-matched for reflection in the infrared in a photorefractive material using shorter wavelength light through a face perpendicular to the grating...
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5483362 |
Compact holographic sight
A holographic sight which includes a base having at least one connector for mounting the base on a small arm, and a hologram of a reticle pattern, a compact laser light source for illuminating the...
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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...
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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...
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5455129 |
Holographic products with sealed edges
A holographic product with sealed edges which will resist delamination before and after attachment to a substrate when exposed to moisture or abrasion resulting from ordinary usage. The holographic...
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5453854 |
Device to check the position and orientation of a mirror
To servocontrol the direction and the position of a collimation mirror of a head-up visor, holographic elements are used. These holographic elements deflect a part of the light reflected by the...
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5452282 |
Optical data storage disc
A process for producing an optical data storage disc (e.g., a compact disc) carrying a digital recording and also carries a holographic image is disclosed. The holographic recording occupies an...
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5440669 |
Photorefractive systems and methods
A new type of holographic recording in photorefractive crystals is disclosed, termed orthogonal data storage, in which counterpropagating, reflection mode holograms are wavelength multiplexed to...
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5428466 |
Neural networks
A neural network has inputs formed by square array of optical modulators M ij and outputs by optical detectors D ij coupled to threshold comparators. A holographic plate includes a spatial...
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5415950 |
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...
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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...
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