Matches 301 - 350 out of 438 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
5335098 Fixing method for narrow bandwidth volume holograms in photorefractive materials  
An improved method for storing permanent holographic gratings in photorefractive materials for use in narrow band filters such as the H 60 filter, as well as the filters themselves. The invention...
5333071 Holographic display apparatus  
A holographic display apparatus reconstructs an image by projecting a beam of a luminous source to a holographic sheet including a plurality of holograms. The holograms are arranged so that the...
5315423 Wavelength multiplexed two dimensional image transmission through single mode optical fiber  
An apparatus and method are provided for transmitting two-dimensional images through a single mode optical fiber. Light from a broadband source is dispersed into component wavelengths, spatially...
5313317 Hologram  
A hologram includes an optically transparent base plate having first and second opposite surfaces. A hologram element is provided on the first surface of the base plate, and has a predetermined...
5311335 Method for generating holographic images  
A laser light show device and method produces a surface projected or suspended holographic image, and includes multiple image projectors. One image projector provides the object image information...
5291317 Holographic diffraction grating patterns and methods for creating the same  
Methods for creating a plurality of holographic diffraction grating patterns in a raster scan fashion. In accordance with the method, the desired pattern is made up of a large plurality of...
5289298 Multiplex grating holographic floodlit center high mounted stoplight  
A hologram structure for use in a holographic center high mounted stoplight system for a vehicle. The hologram structure includes a hologram layer having a plurality of single grating holograms...
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...
5274478 Displayer with holograms  
A displayer for use in a computer comprising a main body, a CRT mounted in the main body and generating an image in an electromagnetic beam, a pair of holograms for projecting the image from the...
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...
5267060 Reflective color light filter and method of manufacture  
A color matrix display including a color matrix reflective filter (10) having groups of reflective red, green and blue (R, G, B) color elements (12) arranged in subgroups (20). The elements (12) of...
5262879 Holographic image conversion method for making a controlled holographic grating  
A method for converting a 2-D image into a hologram is set forth. An optical scanner system which measures the primary color intensity of a selected pixel and forms an indication thereof is...
5257094 Helmet mounted display system  
A holographic display system is disclosed. Utilization of holographic elements provides good transmissivity with respect to both outside stimulus and the superimposed display information. Full...
5235442 Method for the recording and for the visual restitution of a tridimensional scene  
The invention relates to a method for the photographic recording and the visual restitution of a tridimensional scene by means of a coherent light source (1). According to the invention, in view of...
5196951 Reflection holograms without transmission ghosts  
A reflection hologram structure including a transparent substrate, and a pattern of shielded hologram containing regions and transparent regions disposed on the transparent substrate, the pattern...
5194971 Computer aided holography and holographic computer graphics  
Methods for generating holograms from a computer model of any object employ a combination of numerical and optical means. An illumination model and the light dispersion properties of the object are...
5191449 Animated holographic stereogram display  
An animated holographic stereogram display and method of creating the same is disclosed. In accordance with the method, a user views a hologram from a fixed relative position, the hologram...
5187597 Display unit  
A display unit including an indicator (1) for projecting a predetermined image, an image forming optical system (3) for forming a real image at a predetermined position according to the image...
5186533 Lamp arrangement for motor vehicle  
A lamp arrangement for a motor vehicle comprises a light source including a plurality of bulbs and arranged in a rear shelf panel, and a transmission hologram mounted on a rear window on the cabin...
5162929 Single-beam, multicolor hologon scanner  
A three-color laser scanner using a holographically-generated plane linear grating disk (hologon). The disk includes peripherally-arranged facets having identical multiplexed diffraction gratings....
5162927 High efficiency holograms by multiple-layer holography  
A method is disclosed for forming a multi-layer holographic device 22. A first hologram is formed on a major surface of a substrate 14. The first hologram is desensitized to prevent interaction...
5158845 Multi-colored material using rainbow grating  
A decorative multi-colored material and method of making same using rainbow gratings simultaneously evidence different color patterns which change through the color spectrum. The patterns are...
5155605 Rotating disk with spatially stabilized images  
A disk cover is provided with a reflection-type hologram assembly having multiple exposure images therein. The sun or an artificial light source illuminates the hologram assembly as it rotates as a...
5151724 Dynamic holographic display with cantilever  
A dynamic holographic display has an array of reflective surfaces formed on cantilever structures substantially parallel to the surface of a substrate, such as a silicon wafer. A holographic image...
5138471 Holocomposer  
A method is disclosed for making holographic images by recording an array of pixels which together form a two or three dimensional composite image. Each pixel corresponds to a sampling of just...
5128693 Information recording apparatus  
An information recording apparatus includes an acoustooptic deflector, receives a laser beam from a recording light source and an amplitude modulation signal, and diffracts the laser beam in two...
5117296 Apparatus and synthetic holography  
A novel technique for synthetic holography is disclosed. An image combiner such as a hologram comprising a number of independent off-axis holographic optical elements serves to image a set of...
5112121 Display system for multiviewer training simulators  
A display system is disclosed which employs multiple holographic elements for selectively reflecting images from separate projectors to one or more distinct viewing volumes. The display system...
5111313 Real-time electronically modulated cylindrical holographic autostereoscope  
An electronic autostereoscopic display that presents 3D images through the use of horizontal parallax is disclosed. The device disclosed presents a 3D image, viewable over 360 degrees or less,...
5103325 Segmented hologram for multi-image display  
A holographic display includes "segmented" images configured as if positioned in separate viewing "cells" corresponding spatially to preselected subareas of a desired display area with invisible...
5098176 Apparatus for recording plural holographic images into a holographic recording material by temporal interleaving  
A control arrangement for a galvanometer driven mirror whereby the angle of incidence of a beam on a holographic recording material is controlled includes a laser source and associated detector....
5059499 Master hologram and micropattern replication method  
A hologram is directly recorded in a sensitized metal substrate. The hologram may be an amplitude hologram, or may be treated to produce a phase relief hologram which may be stamped into a plastic...
5049963 Holographic television apparatus with semiconductor device  
A holographic television apparatus is disclosed for detecting and displaying three-dimensional holographic information corresponding to a holographic optical interference pattern. The apparatus...
5046792 Holographic printer  
This invention is an optical printer that translates and records visual information that can be seen with ambient light in the first generation holographic printing. The invention permits recording...
5011244 Holographic full color data retrieval and projection system  
A holographic full-color, data retrieval and projection system includes a holographic information storage plate that includes a plurality of reflective holograms, each designed to diffract light...
4999681 Real-time halographic interferometry with a pulsed laser and flicker-free viewing  
A system for carrying out holographic interferometry utilizes the same pulsed laser both for the exposure of holograms and for the reconstruction of combined wavefronts resulting from the exposure...
4998787 Method of fabricating a multiple holographic lens  
Method of fabricating a coherently exposed multiple holographic lens including a first step of fabricating an incoherently exposed master multiple holographic lens with an array of overlapping...
4998786 Method of producing holograms particularly for holographic helmet displays  
A method of producing a desired hologram for a holographic optical element for use in imaging a multi-dimensional array of points, in which two coherent recording beams are utilized to produce an...
4989071 Method of preparing a hologram using readily available light sources  
A method of preparing a color separation holographic master which can be used in the preparation of a colored hologram of an object, by illuminating the object with light having a very narrow...
4988154 Method and apparatus of producing an arcuate rainbow hologram  
A two-dimensional, white light illuminable arcuate rainbow hologram that is potentially viewable from 360° is formed by limiting the information content of a wave front representing a reflection...
4986619 Holographic color control systems  
Holographic color control systems are disclosed for the production of pseudocolor holograms by in-situ sequential swelling of an emulsion and exposure to three color separation images with a single...
4969700 Computer aided holography and holographic computer graphics  
Methods for generating holograms from a computer model of any object employ a combination of numerical and optical means. An illumination model and the light dispersion properties of the objects...
4918469 Diffractive color and texture effects for the graphic arts  
A method of producing color and texture effects on a surface (210,400) without the use of pigments or actual texturing. Diffraction patterns generated by interference between two light beams...
4915464 Reflection holograms and the replication thereof  
Reflection holograms are described and are prepared from a transmission hologram. The reflection hologram is divided into a plurality of sequential parallel notional strips each of which is divided...
4914505 High definition television system  
A high definition television system enables an object to be holographically recorded on a signal plate of an iconoscope to generate a multitude of picture signals which are, in turn, processed to...
4907848 Holographic rotary and linear encoder and method  
An encoder includes a holographic element containing a plurality of holograms, one single mode fiber input line and N fiber optic output lines, which may be either single mode or multimode optical...
4892369 Holographic rear window stoplight  
An improved holographic rear window stoplight is provided and includes a hologram member laminated to the rear window surface. Single or multiple hologram layers may be provided. The hologram...
4889780 Multiple exposure hologram for minimizing crosstalk  
A method and apparatus for forming a multiple exposure hologram includes an object beam cut out mask 24 and reference beam cut out mask 60. Different segments of the masks are left uncovered during...
4839250 Method of replicating volume phase reflection holograms  
A hologram is fabricated by opening a volume phase reflection hologram formed in a recording medium such as a positive photoresist. The opening occurs by forming a second hologram, such as an...
4837843 Hybrid optical and electronic associative memory  
An associative memory system is provided which is a hybrid of optical and electronic components. In the preferred embodiment, a Fourier transform hologram is used to convolve a reference beam with...
Matches 301 - 350 out of 438 < 1 2 3 4 5 6 7 8 9 >