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6259541 Light dispersive insulated glazing unit  
A method for fabricating light dispersive insulated glazing units is provided. According to this method a substantially sealed integral unit comprising a pair of spaced glazing lites and a...
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...
6243202 Structure arrangement, in particular for a security element  
A structural arrangement having optical diffraction qualities for use as a security element in a value bearing document, such structural arrangement having a plurality of surface regions having at...
6236476 Apparatus for making a high quality reflection type holographic optical element  
An apparatus for making a high quality reflection type holographic optical element (HOE) using a single input laser beam, including a reflective mirror, a holographic photoplate having a photo...
6226110 Method and apparatus for holographically recording an essentially periodic pattern  
The present invention relates to a method and an apparatus for holographically recording periodic or quasi-periodic features of a mask in a holographic recording layer. In holographic lithography...
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...
6166833 Zero-order computer generated phase-only holograms  
A method for encoding zero-order phase-only holograms, and the holograms so encoded. The amplitude and phase of each point of a discrete mathematical transform, such as a Fourier transform, of an...
6160645 Holographic media  
A holographic medium uses a photosensitive polymer medium. The shelf life of the photosensitive polymer medium is improved by hermetically sealing the polymer between glass plates. The hermetic...
6156415 Method for fabricating a multilayer optical article and a system having a multilayer optical article  
A method for fabricating an article, comprising the steps of grasping an outer surface of a first substrate with a first holder, whereby the outer surface of the first substrate is held to an...
6157471 Display panel with compensation by holographic birefringent films  
A display panel having compensation using holographic birefringent films. Due to the natural birefringence of liquid crystals, contrast suffers when a liquid crystal cell is viewed at an oblique...
6151142 Grazing incidence holograms and system and method for producing the same  
A method and system are disclosed for recording and displaying grazing-incidence (i.e., steep reference beam angle) holograms supported on a substrate having thin edge-illuminatable geometry. The...
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...
6127067 Recorded volume holograms with multiple adhesive layers  
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...
6124953 Wallpaper construction having a holographic border  
A decorative construction 10 for attachment to a vertical surface wherein the decorative construction 10 includes a main image unit 11 comprising a generally elongated rectangular sheet of...
6122079 Chromatically-adjusted holographically illuminated image-providing display element  
Reflective image-providing displays illuminated with chromatically-adjusted holographically diffused light are provided. In one particular and preferred embodiment, a liquid crystal display...
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...
6076732 Two-motor reflection system with hologram  
A holographic spectroscope for a two-motor reflection system for generating scanning patterns in which a light beam is first reflected by a first reflector connected to a first motor electrically...
6066378 Volume hologram laminate and label for preparing volume hologram laminate  
A multilayered volume hologram structure of the invention comprises a substrate 2 for a certificate or the like, and an adhesive layer 5, a volume hologram layer 5 and a surface protective film 7...
6043911 Optical source module with two wavelengths and optical pickup apparatus using the same  
A light source module with two wavelengths that is adapted to generate laser beams different in wavelength. In the light source module, a hologram optical element (HOE) is used to allow a first...
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...
6038041 Three-dimensional holographic fluorescence microscope  
An optical scanning holography system which requires only a two dimensional scan to record three dimensional information from a fluorescent specimen wherein the optical scanning holography is...
6023352 Methods and systems for thermal fixing and/or erasing of holograms  
The invention features methods and systems for thermally fixing or erasing a laser-induced hologram in a photorefractive material, for example, by directing laser radiation having a wavelength...
6020090 Method for producing transparent type hologram  
Method for producing a of a transparent type hologram screen of an wide visible range. A photosensitive member and a light source of a reference light are arranged on the same side of the light...
6017657 Method for embossing holograms into aluminum and other hard substrates  
Surface relief holograms are prepared by directly impressing them into aluminum and other hard metal substrates, without the need to preheat or otherwise soften the substrate. A holographic...
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...
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,...
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...