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5067792 Method and apparatus for interfacing of holographic and electronic data  
An apparatus for interfacing holographic and electronic data comprises an input/output port for the interfacing of a holographic wavefront interference pattern and an electronic array capable of...
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...
5047845 Charge-transfer-device planar array for detecting coherent-light phase  
Respective processors for pairs of photodetecting elements are included in an imager used for sensing hologram fringe patterns in an optical interferometer. These processors remove the...
5040888 Hologram system which helps reduce eye strain  
A holographic system which contains a multiple image hologram comprised of two or more images at varying focal distances, which when viewed consecutively and in repetition will exercise the...
5024494 Focussed light source pointer for three dimensional display  
The disclosure relates to a pointer for a three dimensional display wherein a scanned light beam is displayed upon a rotating display member rotating about a fixed axis for receiving and...
5009502 System of holographic optical elements for testing laser range finders  
A focusing, collimating, and beamsplitting test system for testing laser rangefinders for their beam quality, ranging accuracy, and sight unit alignment. The system includes holographic optical...
5005927 Nonlinear optical microscope  
A microscope that preferentially displays either moving or stationary objects. This all-optical device operates in real-time using the coupling of optical beams in suitable nonlinear medium such...
4998785 Decorative surface and a method of producing it  
A material has a reflective surface which bears a light diffracting pattern in the form of a series of well-defined grooves and ridges, wherein the transverse cross-section of the surface has a...
4998788 Reflection electron holography apparatus  
An apparatus forming a reflection electron hologram, wherein a fraction of an electron wave from an electron source illuminate a specimen and caused to be reflected thereat, the remaining electron...
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...
4997747 Method for the formation of a diffraction grating  
A method for the formation of a diffraction grating on a substrate using a holographic technique and an etching technique, wherein the periodicity of the pattern of the diffraction grating can be...
4983004 Apparatus for three-dimensional viewing of magnetic resonance imaging tomograms  
A plurality of liquid crystal displays, each able to independently display one of a plurality of MRI tomograms, is dispersed such that the display screen of each appear planar from a common point...
4983003 Alternate methods of side lobe reduction in holograms  
High side lobes shown in a hologram efficiency curve are suppressed by reducing the effective sensitivity of a holographic recording medium by a plurality of film layers of gelatin such that there...
4983002 Optical head device  
An optical head device which consists of a semiconductor laser for emitting a light flux, a plano-parallel optical element operable to diffract the light flux into a zero-order diffracted light...
4979422 Holographic drumhead  
The present invention provide for a drumhead, or the head of any percussion or related instrument, such as a tambourine, which includes a layer in which a hologram image is formed which...
4978593 Hologram transfer process  
A method is disclosed for making holograms on transparent surfaces. A protective thin substrate 18 is laminated to a temporary support 24 for processing. This procedure protects the delicate thin...
4976799 Method of preparing laminated holograms  
There is described a method of preparing a hologram laminated between two sheets of glass which comprises forming an assembly which comprises a sheet of glass, a sheet of polyvinyl butyral, a film...
4974920 Electronic holographic apparatus  
The invention relates to holography and more particularly to an electronic holographic apparatus whose electrical output represents the magnitude and phase of coherent light reflected from a...
4968138 System for monitoring intensity during holographic exposure  
A system for monitoring intensity before, during, and after holographic exposure includes a monitoring assembly within an exposure beam and intermediate a light source and a hologram recording...
4966440 Post-exposure dye treatment in the production of holograms  
A hologram which comprises a light transparent base having coated thereon a hydrophilic water-swellable layer which contains the holographic image and a dye whose peak absorption is below the peak...
4963725 Adaptive optical neural network  
An adaptive optical network is provided for the implementation of learning algorithms. The network comprises a double Mach-Zehnder interferometer in conjunction with a photorefractive crystal that...
4953951 Method for making holograms with coherent radiation from a stabilized laser diode that has been actively cooled  
A technique is presented involving a laser diode stablized in a single mode employing active cooling at a specific current density to produce a preselected wavelength of coherent radiation. This...
4950067 Hologram which helps reduce eye strain  
A hologram comprised of two or more opticals (10) which communicate images of depth-of-field; a light source (11) to illuminate said opticals.
4947299 Holographic decorative lamp  
A holographic decorative lamp includes a holographic film pre-recorded with many interference patterns of a torch formed on a shade of the lamp, whereby upon an illumination of the lamp, plural...
4943126 Replication of carriers bearing digitally recorded information  
The holographic manufacture of Compact Discs has three stages namely mastering, production of the sub-master holograms and replication. In the production stage, a holographic plate, spacer and...
4940301 Method and apparatus for enhancing a holographic image by candlelight  
A method and apparatus for enhancing a holographic image in order to create an eerie spiritual visual image which can be used in conjunction with religious pictures in hologram form or an eerie...
4937786 Binary hologram transducer using magnetic bubbles  
A hologram transducer using the Faraday effect in magnetic bubble devices for recording and reproducing the amplitude and phase distributions over a section of a beam of coherent light is...
4930847 Multicolor holographic element and apparatus for head-up display applications  
A method for producing multicolor holographic optical elements useful in presentation of multicolor holographic images in a head-up display (HUD) system. Because of restricted geometries, such...
4926412 High channel density wavelength division multiplexer with defined diffracting means positioning  
A wavelength division multiplexer/demultiplexer having optical path lengths between a fiber array and a Fourier transform lens, and between a dispersion grating and the lens equal to the focal...
4921319 Surface relief hologram structure with reflection from an air interface  
A replica hologram structure wherein an information carrying relief pattern on one surface of the hologram is not metallized for reflection, as is the usual case, but rather air between the...
4913504 Documents or like articles bearing holograms  
A document or like article produced by a process which provides a three-dimensional, light-diffracting pattern comprising a hologram on a surface of a transparent material layer which may be...
4900111 Embossed holograms formed on hard metal surfaces  
Embossed holograms or diffraction patterns are formed on hard, unembossible metal substrates such as steel sheet metal. The hard metal substrate has a soft embossible metal layer such as tin...
4893887 Holographic image transfer process  
A supported thin metal hologram is formed and mounted on a substrate using an adhesive. In a preferred aspect, the hologram is covered with a transparent resin which preferably is identical to the...
4892370 Means and method for implementing a two-dimensional truth-table look-up holgraphic processor  
Algorithms and optical processor architectures for implementing a two-dimensional truth-table look-up processor are disclosed. An optical holographic medium stores the spectral expansion...
4862115 Optical beamformers  
Disclosed as a beamforming system, particularly useful for seismic exploration or undersea surveillance, in which data processing of the system is done optically. Sensor outputs are subjected to...
4838965 Holographic art applied to T-shirts or other textile products  
A hologram being adhered to a textile fabric by means of a silk screen printing ink while at the same time printing a graphic on the textile; the ink embedding the hologram edges therein and the...
4837425 Security arrangement  
A security arrangement includes a token in the form of a thin lamina which co-operates with a receptor. The token includes an optically readable pattern in the form of a bar code, and a thin film...
4834473 Holographic operator display for control systems  
A technique for producing a three-dimensional holographic display which is updatable in real time is disclosed. A spinning lens device intercepts a two-dimensional display on a projection...
4825801 Tamper indicating seal and method for making the same  
An improved tamper indicating seal is disclosed, characterized by the generation of a unique signature pattern which, if altered, is indicative of tampering. The seal includes a layer of...
4802718 One piece frame for holding a holographic element in a holographic system  
A one piece frame for holding a holographic element in a holographic system, and comprising a border portion, a seating portion, and a plurality of lateral positioning tabs. The border portion...
4750153 Associative holographic memory apparatus employing phase conjugate mirrors and a two-wave mixing contra-directional coherent image amplifier  
Associative holography memory apparatus is disclosed which employs a hologram, two phase conjugate mirrors, and a two-wave mixing contra-directional coherent image amplifier. The mirrors and...
4739496 Associative holographic memory apparatus employing phase conjugate mirrors  
Associative holography memory apparatus is disclosed which employs a hologram and two phase conjugate mirrors. The mirrors are arranged to form a conjugate resonator whereby the output image from...
4738498 Method of recordng a hologram  
A method of recording a hologram on a recording medium composed of a substrate and a recording material coated as a thin layer on the substrate, the recording medium being transparent or...
4712851 Positioning alignment apparatus and method using holographic optical elements  
An apparatus and a method employ on a subject at least one holographic optical element that develops two beams of focused light whose focal configurations appear in predetermined locations which...
4713738 Light fixture using a holographic optical reflector  
Light fixtures achieve improved efficiency by utilizing a reflective holographic optical element to direct light from a light source to a task area. The light fixture can employ any conventional...
4685768 Color control in holograms  
Color control in a Denisyuk type hologram having interference fringes lying generally parallel to the substrate is effected by subjecting the initially produced hologram to resensitizing,...
4681324 Holographic game cards  
A deck of playing cards wherein part or all of the indicia indicating the value of each card is formed of a holographic image which is clearly viewable from one range of angles, such as angles at...
4655542 Optical signal processing arrangements  
Shade or tint intensities in holograms are calibrated by an array of calibration pixels in each hologram. The preferred array consists of crossed lines of the calibration pixels in the hologram...
4637056 Optical correlator using electronic image preprocessing  
An optical processing system uses spatial filtering to recognize two-dimensional functions and images. Images of real objects are captured with a television camera. The electronic signals...
4620089 Automatic optical focusing device  
An auto-focus system for focusing reflecting objects which are under investigation in a measuring device. The invention comprises a light source for producing an illumination beam for illuminating...