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6016210 Scatter noise reduction in holographic storage systems by speckle averaging  
A method and an apparatus for increasing detection signal-to-noise ratio, while reading out a hologram from a holographic storage medium, are disclosed. The hologram is written by interfering a...
6011650 Decorative optical display apparatus  
A decorative optical display (20) utilizing a reflective diffraction grating (94) or a transmissive diffraction grating (304) and a plurality of polychromatic light sources (60) disposed around...
6002521 Light dispersive insulated glazing unit  
Light dispersive insulated glazing units are disclosed. The light dispersive insulated glazing units comprise two lites of glazing material, spaced apart from and opposing one another and a...
5991057 Image transformation of a picture by using a superimmposed hologram  
The present invention uses a hologram superimposed on a traditional picture such as a photograph or printed picture. The hologram is more viewable at certain angle ranges than at others. This...
5989923 Hologram containing sensor  
The invention relates to a sensor (9) comprising a hologram (17) supported on or within a holographic support medium (10).A species to be detected is reactive with a substance disposed throughout,...
5985490 Hologram and method of and apparatus for producing the same  
A duplicating photosensitive material film is brought into close contact with an ND glass reduced in thickness so as to become flexible or a flexible sheet or an ND glass coated with a cushioning...
5973805 Antiglare inner mirror  
An antiglare inner mirror includes a housing which is supported by a stay and is capable of inclining by an inclining device. A mirror main body is mounted on a front opening portion of the...
5963345 Holographic stop sign  
A warning indicator that comprises a lamp hidden adjacent to the roof of a vehicle, such as a school bus, and a transmission hologram decal containing a hologram that is mounted on a front or rear...
5930011 Holographic Multicolor optical elements for use in liquid crystal displays and methods of making the elements  
The present invention relates to holographic multicolor optical elements for use as multicolor filters in liquid crystal displays and methods of making the elements. The elements can be used as...
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...
5920058 Holographic labeling and reading machine for authentication and security applications  
A holographic security label and automated reading machine for marking and subsequently authenticating any object such as an identification badge, a pass, a ticket, a manufactured part, or a...
5909293 Hologram unit of optical pickup and method of attaching hologram plate using the same  
Disclosed are a hologram unit of an optical pickup which has a main hologram and auxiliary alignment holograms around the main hologram thereof and a method of attaching a hologram plate of the...
5907312 Three-dimensional image display device  
The invention is intended to represent a three-dimensional image of an object just as observable from a viewing point, allowing representation of a semi-transparent image on the condition that its...
5900954 Machine readable record carrier with hologram  
A record carrier (e.g., an identification card) of the type containing machine-readable representations of data, wherein the record carrier comprises a substrate, a first pattern of...
5898511 Process for making holograms and holography device  
A plurality of hologram elements are simultaneously exposed to a constructing light while they are arranged in the form of a stack, so that the incident beam can be uniform within the exposure...
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...
5892602 Mobility measurement using conoscopic holography  
A method and device for measuring the mobility distribution of particulate elements using incoherent light holography, where the particulate elements are optically labeled. An elementary hologram...
5889598 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...
5850299 Method of choosing an optimum angle between a reference beam and an object beam to record a hologram  
A method of choosing an angle between a reference beam and a signal beam in a holographic storage apparatus is presented. The angle between the reference and signal beams can be optimized in light...
5843598 Subject plate for recording holograms, holograms-making method, and hologram-recorded article  
The invention provides a hologram-recording subject plate comprising a block and a variety of subjects fixedly contained therein, which ensures easy, stable yet continuous recording of a...
5838436 Multi-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...
5838466 Hidden Holograms and uses thereof  
Replicas of a surface relief hologram, or other light diffraction pattern, are coated with a transparent material having substantially the same refractive index as the holograms to conform to the...
5838468 Method and system for forming fine patterns using hologram  
The method for forming a fine pattern on a substrate disclosed includes a step of preparing a hologram having a pattern, a step of irradiating material waves (de Broglie waves) such as neutral...
5835246 Addressable imaging  
A means, method and apparatus for producing a parallel addressable set of images by modulating a set of input beams with addressing information, and projecting the energy from a three-dimensional...
5828471 Illumination system and display device  
An illumination system includes a polarization selective holographic element, which includes at least one optically anisotropic material, arranged to separate light of a first polarization type...
5822088 Hologram display item  
A hologram display item comprising a hologram member having a front surface with a holographic image thereon and a rear surface. A light source assembly is also provided and is structurally...
5815936 Detachable hologram assembly and windage/elevation adjuster for a compact holographic sight  
Detachable hologram assembly for a compact holographic sight includes a hologram of a reticle image or other desired alignment indicia mounted within a resilient, detachable frame. The frame...
5805316 Twin-image elimination apparatus and method  
The twin-image elimination apparatus of the present invention comprises (a) a scanning light source for emitting a scanning light beam; (b) an interference device which converts the scanning light...
5798850 Method of and apparatus for duplicating hologram and duplicate hologram  
A hologram duplicating method and apparatus whereby a photosensitive material film is continuously and smoothly brought into close contact with the surface of a hologram original plate, and the...
5790284 Display apparatus and displaying method for image display producing stereoscopic effect  
This specification discloses a displaying apparatus having a display emitting light, and an optical element formed by two holograms each having optical power and partially overlapping each other....
5784181 Illumination device for illuminating a display device  
The invention relates to an illumination device for illuminating a display device. In a preferred embodiment, non-polarized light from a non-polarized light source is polarized by a holographic...
5784182 Directional sight for instruments  
The sight comprises a support adapted for mounting onto an instrument to be aimed at a target, an optical device mounted onto the support for creating an image including a first sighting mark at a...
5776286 Hologram manufacturing process and method for efficiently providing a multi-holographic optical element substrate unit  
The present invention provides a manufacturing process (600) and method (500) for efficiently providing a multi-holographic optical element substrate unit. Upon preparation of an original...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...