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3776641 |
OPTICAL DIVIDER POINT ASSEMBLY FOR HARMONIC SPECTRUM ANALYSIS
An optical divider point assembly for harmonic spectrum analysis having a lindrical drum with one or more sets of spiral lines therearound, each set originating at a point and diverging in equal...
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3771129 |
OPTICAL PROCESSOR FINGERPRINT IDENTIFICATION APPARATUS
An incoherent optical processor fingerprint identification apparatus employing a rotatable grating for inspecting the line orientation in a plurality of preselected finite sample areas of a...
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3768907 |
SCANNING APERTURE PARTIALLY COHERENT OPTICAL CORRELATOR
A partially coherent optical correlator of, for example, the frequency pl type, has a slit of adjustable width that moves rapidly in the spatial domain P 1 to scan a portion of the input signal...
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3767305 |
RETRO-REFLEX VIEWER FOR DETECTING COUNTERFEIT IDENTITY CARDS
A device for viewing identity cards and other documents having on their surfaces an overlay pattern of microscopically small beads which are normally invisible but which become visible by...
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3765749 |
OPTICAL MEMORY STORAGE AND RETRIEVAL SYSTEM
An optical memory element capable of recording many pages of information is provided by locating a thermoplastic (heat-deformable) resin memory sheet between a pair of fly's eye lenses. One of...
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3762819 |
OPTICAL ANGLE MEASURING SYSTEM
An optical system is disclosed for automatically measuring corner angles of graphic patterns. In a preferred embodiment, the image of a graphic pattern is illuminated by a light source, slowly...
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3759179 |
CREDIT CARD AND SIGNATURE VERIFICATION SYSTEM
An improved system of signature identification for credit card users includes an embossed reverse image of the true signature of the authorized card holder. The card code or account number may also...
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3757038 |
IMAGE ANALYZING APPARATUS
As described herein, television information signals are supplied concurrently to a display device for reproduction and to a converter network which converts the analogue television information...
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3753617 |
METHOD OF AND APPARATUS FOR COMPARING ONE ARTICLE WITH ANOTHER SIMILAR ARTICLE
A method and apparatus for comparing one article with another similar article, the article being for example documents or bank notes to detect forgeries or discrepencies. The method comprises...
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3749922 |
APPARATUS FOR READING OUT INFORMATION DATA
Apparatus for reading out information data stored on a transparent carrier in the form of diffraction screens by means of which the individual areas of the information carrier are read out...
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3744917 |
OPTICAL COMPARISON DEVICE USING AN OPTICAL DIFFUSER
A comparison device in which objects to be compared are arranged in side-by-side relation and when viewed through a mirror system are caused to appear as one object with each object being viewed by...
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3745353 |
BRAGG ANGLE COLLINEAR HETERODYNING FILTER
A Bragg angle matched filter wherein the light rays reflected by the delay ell are combined with the modulated rays which rebound from the wave plate and travel back through the delay cell. The...
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3743422 |
OPTICAL IMAGE PROCESSOR
A processing array which permits the simultaneous filtering of a single input image by a number of different spatial frequency filters. A coherent collimated beam of light is divided into a...
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3743423 |
INTENSITY SPATIAL FILTER HAVING UNIFORMLY SPACED FILTER ELEMENTS
A spatial filtering system for inspecting integrated circuit photomasks, and the like. The system includes a spatial filter comprising a matrix-like array of opaque regions on a transparent field....
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3743421 |
SYSTEM FOR IDENTIFYING PERSONNEL BY FINGERPRINT VERIFICATION AND METHOD THEREFOR
An optical recognition device which employs a source of incoherent quasi-monochromatic light for illuminating an input prism upon which a fingertip to be verified as that of a particular individual...
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3740153 |
OPTICAL STRAIGHT LINE DETECTOR
A simple means of detecting a straight line or edge using non-coherent optical techniques. An object is imaged onto a rotating film loop by a lens. The film loop has a number of parallel, equally...
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3737685 |
APPARATUS AND METHOD FOR CONTROLLING AN ELECTRICAL POWER CIRCUIT
Apparatus is herein described for controlling an electrical power circuit in response to the electronic detection of a photo reflective substance on a predetermined portion of the human body. More...
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3735374 |
HOLOGRAM IDENTIFICATION SYSTEM
An identification arrangement comprises light sources and photo-detectors arranged in accordance with a predetermined correspondence code. An appropriate key hologram produces, in respect of each...
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3735094 |
OPTICAL CODE READING SYSTEM
An optical scan card reader incorporating substantially a dual electrical package as set forth in U.S. Ser. No. 11,613, filed Feb. 29, 1960. Although that teaching is not essential to an...
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3723970 |
OPTICAL CHARACTER RECOGNITION SYSTEM
As described herein, a program controlled image dissector tube scans the printed information recorded on a storage medium to provide analog information signals. The analog signals are converted...
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3717412 |
METHOD FOR ANALYZING SPECTRAL DATA USING HALOGRAMS
A signal obtained by an analytical instrument is converted into a light and shade spectrum by an electron exposure unit, the said light and shade spectrum then being formed into a hologram. Unknown...
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3716301 |
FINGERPRINT IDENTIFICATION APPARATUS
A coherent optical processor fingerprint identification apparatus in which identification is established by correlating an optical beam pattern representative of the finger to be identified with a...
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3708677 |
METHOD AND APPARATUS FOR RETRIEVING CODED INFORMATION ON FILM
This invention comprises a method and apparatus for retrieving coded information recorded on film and includes a film transport means for driving the film at a relatively high velocity, means for...
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3706373 |
METHOD AND APPARATUS FOR CORRELATING REJECTED PHOTOGRAPHIC PRINTS WITH CORRESPONDING PHOTOGRAPHIC NEGATIVES
Method and apparatus for sorting "marked" unacceptable prints from acceptable prints as the prints are cut from a print roll, cutting customer order negative filmstrips into a plurality of negative...
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3704949 |
METHOD AND APPARATUS FOR PERSONAL IDENTIFICATION
A method and apparatus for creating an encoded fingerprint card which consists of a hologram of a fingerprint created by a main illuminating beam and a reference beam on a sensitive photographic...
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3689772 |
PHOTODETECTOR LIGHT PATTERN DETECTOR
A special photodetector array for sampling the light energy distribution in a plane, such as the diffraction or fourier-transform pattern of an illuminated object transparency which is obtained by...
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3679314 |
APPARATUS FOR OPTICALLY TESTING THE GENUINENESS OF BANK NOTES AND OTHER TOKENS OF VALUE
Apparatus for optically testing the genuineness of bank notes and the like by successively illuminating a selected portion of a note with light beams having different spectral distributions and...
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3677623 |
CLEAN WINDOW ASSEMBLY FOR REAL TIME FINGERPRINT INPUT TO FINGERPRINTIDENTIFICATION SYSTEM
An assembly for the introduction of fingerprint data in an identification system including an input surface to lie on an optical axis and a strip of light transmitting film carried on suitable...
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3670305 |
LENSLESS OPTICAL RECOGNITION SYSTEM
A lensless recognition system including a hologram having interference patterns therein corresponding to known characters. The interference patterns are formed by a character beam which passes...
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3668633 |
ORIENTATION AND LINEAR SCAN DEVICE FOR USE IN AN APPARATUS FOR INDIVIDUAL RECOGNITION
An apparatus for positively orienting a designated skin area of an individual to be identified or whose identity is to be verified with respect to a linear light scan device adapted to project a...
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3658420 |
PHOTOMASK INSPECTION BY SPATIAL FILTERING
This disclosure describes an optical spatial filtering technique for detecting hole-type defects and excess spot defects in photomasks used in making microcircuits. An approximate form factor...
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3652162 |
COMPLEX DATA PROCESSING SYSTEM EMPLOYING INCOHERENT OPTICS
An optical system for processing analog information in the form of complex data without a requirement for coherent optics, wherein discrete pieces of data having magnitude and phase components are...
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3645626 |
APPARATUS FOR DETECTING DEFECTS BY OPTICAL SCANNING
Apparatus for detecting defects in optically discernible patterns on substrates. In apparatus which compares the optically discernible patterns in a pair of regions by coincidentally scanning said...
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3643216 |
HOLOGRAPHIC IDENTIFICATION SYSTEM
An identification card or credit card contains a unique holographically encoded number which may be decoded by a simple decoder requiring only a single flashlight bulb as a light source for...
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3639905 |
CREDIT CARD SYSTEM HAVING MEANS FOR SENSING IF OBJECT IS LIVING
A system for identifying the user of a credit card or the like, wherein a predetermined portion of the living body, such as a finger or a hand, of the user of a card is used for identification of...
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3638201 |
OPTICAL DATA STORAGE SYSTEM
Damaged or faulty areas of an optical recording medium of the type wherein the data is recorded by means of selective discolorations caused by a writing light beam of a first wavelength are...
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3634012 |
METHOD AND APPARATUS FOR EXAMINING INTAGLIO PRINTING
An optical technique for examining a printed surface to ascertain if it has been printed in accordance with an intaglio printing process, wherein a portion of the embossed printed surface is...
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3631253 |
LOGIC COMPARATOR USING BIREFRIGENT MEDIUM
Apparatus is disclosed for comparing a first item of information represented by the sense and magnitude of the relative retardation of components of radiation with a second item of information...
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3630596 |
PHOTOMASK REGENERATION BY INTENSITY SPATIAL FILTERING
An intensity-type spatial filtering technique is employed to generate a corrected replica of a two-dimensional photomask or other pattern containing an array of regularly spaced elements which...
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3624278 |
AREA MULTIPLEX IMAGE RECORDING BY FLYING SPOT RASTER SCANNING EMPLOYING SPATIAL FILTERING
A plurality of images are stored on a common area of a recording medium by impressing the images respectively on spatial carriers having like spatial frequency but predetermined azimuthal...
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3624605 |
OPTICAL CHARACTER RECOGNITION SYSTEM AND METHOD
A system and method for identifying an unknown character by superimposing two coherent light beams containing diffraction patterns of an unknown and a reference character. The two light beams have...
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3619060 |
IDENTIFICATION DEVICE
An identification device which includes a source of parallel light beams, a prism having a face for receiving the light beams and having another face for receiving an object to be identified,...
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3614232 |
PATTERN DEFECT SENSING USING ERROR FREE BLOCKING SPACIAL FILTER
Defects in microcircuit patterns are sensed by illuminating the pattern with monochromatic collimated light. The illuminated pattern is imaged through a lens to produce substantially a...
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3612687 |
CREDIT CAR SYSTEM
A credit card system is described wherein a credit card has an area thereof provided with a pattern representative of a code. A card pattern reader is provided wherein selected portions of the...
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3604806 |
PATTERN CLASSIFICATION APPARATUS
The apparatus uses a beam of collimated light, e.g. from a laser, to produce a diffraction image of the pattern, e.g. a transparent fingerprint. This image is effectively scanned, either...
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3604808 |
DETECTION OF CUMULATIVE REGISTRATION ERRORS ON PHOTOMASKS USING OPTICAL INTERFERENCE FRINGES
A fringe pattern generated by a pair of intersecting light beams of the same wavelength is employed in a spatial filtering technique to detect cumulative positional errors along a superposed linear...
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3602643 |
SCAN CONTROL APPARATUS FOR VALIDATION DEVICE
Document validation apparatus includes apparatus for controlling the rate of scan in a machine designed to perform an authentication test on a text document by moving a scanning means across at...
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3602593 |
METHOD AND APPARATUS FOR ONE-DIMENSIONAL OPTICAL STEREO PARALLAX PROCESSING
A method and apparatus for simultaneously measuring the parallax of the imagery on two stereo photographs along a line perpendicular to the direction of parallax by taking successive...
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3599147 |
CHARACTER RECOGNITION SYSTEMS AND APPARATUS
Method of and apparatus for effecting recognition of patterns, especially written or printed characters in which a representation of the pattern in incoherent light, moving electrons or other...
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3597045 |
AUTOMATIC WAFER IDENTIFICATION SYSTEM AND METHOD
A method and system for the identification of semiconductor wafers. A code in the form of selected recognition symbols is inscribed in circuit-free regions or kerf areas of the wafer. In a separate...
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