| Patents for G01V 8 - Prospecting or detecting by optical means (8,157) |
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| 06/30/1994 | DE4305195C1 Light sensor for detecting and counting presence of objects |
| 06/29/1994 | EP0604187A2 Toxic gas detector system |
| 06/28/1994 | US5324931 Process for reliably detecting the passage of a target object using a photoelectric control unit employing pseudo-random jitter factor pulses |
| 06/21/1994 | US5323015 Directional movement sensor using three light sensing elements and differential amplifiers |
| 06/21/1994 | US5323005 Method and apparatus for monitoring energy radiant from a dispensed heated material |
| 06/21/1994 | US5323002 Spatial light modulator based optical calibration system |
| 06/09/1994 | WO1994012897A1 Diffusion-assisted position location, particularly for visual pen detection |
| 06/09/1994 | DE4341500A1 Vehicle passenger position detection arrangement - has passenger sensors and controller for triggering airbag depending on whether or not passenger is out of position |
| 06/09/1994 | DE4240804A1 Detecting position of recording medium on base and=or measuring its width - involves scanning base and medium with optical position transducer while illuminating with light source generating focussed beam |
| 06/09/1994 | DE4240664A1 Conveyor system, e.g. for goods on palettes - has carrier devices on parallel rails, and elongated housing carrying electrical, pneumatic and=or hydraulic lines |
| 06/07/1994 | US5319293 Apparatus and method for controlling a windshield wiping system |
| 06/07/1994 | US5319216 Substrate detector with light emitting and receiving elements arranged in staggered fashion and a polarization filter |
| 06/01/1994 | DE4238116A1 Reflection light barrier with adjacent transmission and reception optics - contains retroreflector and polarising elements in transmission and reception light paths |
| 05/31/1994 | US5317140 System for optically determining the direction of an object |
| 05/26/1994 | DE4334785A1 Light barrier device for lift door - has electro-optical transmitters and opto-electrical receivers contained in housing coupled to light barrier points via optical fibres |
| 05/24/1994 | US5315107 Compact disc counter arranged to minimize counting errors having a pair of beams and a pulse counting means |
| 05/24/1994 | US5315100 Photoelectric conversion apparatus for detecting movement of object with spatial filter electrode |
| 05/19/1994 | DE4238666A1 Object detection arrangement with transmitter and receiver - contains threshold switch and micro-controller testing numbers of pulses compared to demand pulse count |
| 05/19/1994 | DE4238504A1 Tool measuring method for machine spindle - measuring spindle stock position when tool enters optical measurement plane using laser light barrier |
| 05/17/1994 | US5313063 Forward looking infra-red apparatus |
| 05/05/1994 | DE4337130A1 Recognition and removal of old labels from cylindrical tank - using abrasion from areas of curved surface identified as differing in colour from background during previous rotation |
| 05/04/1994 | EP0594852A1 Fail-safe scanning circuit and sensor of multi-optical axis beam type |
| 05/04/1994 | CN1086271A Apparatus and method for testing multiple characteristics of single textile sample with automatic feed |
| 05/03/1994 | US5308993 Semiconductor wafer cassette mapper having dual vertical column of light emitting apertures and a single vertical column of light receiving apertures |
| 04/28/1994 | WO1994009355A1 Apparatus and method for textile sample testing |
| 04/20/1994 | WO1995010789A1 Fail-safe multiple optical-axis light beam sensor |
| 04/19/1994 | US5305390 Person and object recognition system |
| 04/19/1994 | US5304814 Sensor circuit and method for detecting the presence of a substance such as ink ejected from a thermal ink ejecting print head, or the like |
| 04/14/1994 | WO1994008258A1 Apparatus and a method for classifying movement of objects along a passage |
| 04/14/1994 | DE4233810A1 Monitoring arrangement for big machines, e.g. presses, moulding machines - has optical rotation sensor scanning dangerous region for presence of body parts, e.g. hands |
| 03/31/1994 | WO1994007117A2 Airborne multiband imaging spectrometer |
| 03/30/1994 | EP0589554A2 Airborne survey method and apparatus |
| 03/30/1994 | EP0589448A1 An occupant condition determining apparatus |
| 03/24/1994 | DE4231763A1 Vehicle windscreen wiper control system - evaluates sensor signals to determine rain type and adjusts wash wipe cycle accordingly. |
| 03/22/1994 | US5296711 Technique for the remote detection of sea slicks |
| 03/22/1994 | US5296707 Apparatus for detecting movement of heat source |
| 03/16/1994 | EP0587469A1 Movement detection process in monocular imaging with fixed acquisition system |
| 03/09/1994 | EP0585760A1 Multiple station through beam photoelectric sensor |
| 03/09/1994 | EP0426677B1 Detection circuitry |
| 03/08/1994 | US5293427 Eye position detecting system and method therefor |
| 03/08/1994 | US5293048 Laser sensor for detecting the presence of an object in continuous motion |
| 03/08/1994 | US5293047 Method and an apparatus for detecting indices of paper based on a replaceable intermediate or average threshold value |
| 03/02/1994 | EP0584510A2 Article detection device using a transmitter and a receiver |
| 03/01/1994 | US5291011 Photosensor controller for musical instrument having a driving means for driving a subsequent pair of luminescing means and detecting means in sequence |
| 02/22/1994 | US5289011 Sensor control system and method compensating for degradation of the sensor and indicating a necessity of service prior to sensor failure |
| 02/17/1994 | DE4307479C1 Opto-electronic sensor device detecting vehicle windscreen wetting level - uses associated heating element to aid fixing of sensor block to windscreen and thermal release from windscreen |
| 02/16/1994 | EP0582941A1 A temperature distribution measurement apparatus |
| 02/15/1994 | US5286967 Method and apparatus for self-biasing a light beam obstacle detector with a bias light |
| 02/15/1994 | US5286154 In bundle foreign object search and retrieval apparatus |
| 02/08/1994 | US5285085 Photo-coupling device with improved light shading plate holding means |
| 02/08/1994 | US5285077 Magnetic recording media differentiation system and method with color sensors |
| 02/03/1994 | DE4224784A1 Operating light barrier, gratings or screens e.g. for protecting machine operator - limiting coded light pulse transmissions to specific time-frame, and enabling receiver to exclude external light and its harmonics |
| 02/03/1994 | DE4224750A1 Quantitative movement analysis of fish - removing moving objects from video image to leave background, comparing successive images with background and recognising object by difference in intensity |
| 02/02/1994 | EP0580607A1 Detection systems |
| 02/01/1994 | US5283424 Optical paper sensor having alterable sensitivity and illumination intensity |
| 01/25/1994 | US5281810 Photoelectric control unit adapted for determining its own operating margin having dual variable-gain amplifier |
| 01/25/1994 | US5281809 Method of operating light curtain with deactivated zone control |
| 01/25/1994 | CA1326390C Damage evaluation system using optical fibers |
| 01/20/1994 | DE4313280A1 Visibility measuring device for motor vehicle - projects light spot onto road at set distance in front of vehicle for visual observation by driver |
| 01/18/1994 | US5280273 Toxic gas detector system having convenient battery and sensor replacement |
| 01/18/1994 | CA1326276C Optical motion sensor |
| 01/04/1994 | US5276467 Alignment system for multiple color pen cartridges |
| 01/04/1994 | US5276391 Door mounted safety apparatus |
| 01/04/1994 | US5276389 Method of controlling a windshield wiper system |
| 01/04/1994 | US5276388 Apparatus and method for controlling a windshield wiping system |
| 01/04/1994 | US5276321 Airborne multiband imaging spectrometer |
| 12/29/1993 | EP0564641A4 Photoelectric switch |
| 12/23/1993 | WO1993025891A1 Oil spill detection system |
| 12/16/1993 | DE4237311C1 Intruder detection system for room surveillance - applies several voltage reference levels to comparator from microprocessor via resistors, and prevents emission of pulse upon detection of noise signal. |
| 12/16/1993 | DE4219270A1 Multiway pipeline valve controller for white or red wine and water flow control - directs light beam from halogen lamp through path of liquid for absorption to differentiate between wine and water and controls three=way valve on basis of result to divert flow into appropriate pipe. |
| 12/16/1993 | DE4219073A1 Endless inclined escalator breakage monitoring system using light barrier - directs laser beam close to escalator from horizontal section via curved path of light guide, mirror or prism along inclined section and via second curved path to detector aligned with horizontal. |
| 12/15/1993 | EP0574332A2 Thermal printer having a noncontact sensor for determining media type |
| 12/14/1993 | CA2026290C Moving object detecting system |
| 12/14/1993 | CA1325258C Millimeter wave imaging device |
| 12/09/1993 | WO1993024950A1 Window mounted optical moisture sensor having light pipes with distal ends |
| 12/06/1993 | CA2097552A1 Cooking appliance and method with a sensor |
| 12/02/1993 | DE4217696A1 Opto-electronic transducer, e.g. for detecting paper sheet in printer - has light emitting diodes, mirror reflecting light to compact receiver with photodiode directly connected to integrated receiver circuit |
| 11/30/1993 | US5266812 Substrate detector with light emitting and receiving elements arranged in a staggered fashion |
| 11/30/1993 | US5266810 Package height detector having a first group of light sensors selectively enabled by the detector outputs of a second group of light sensors |
| 11/30/1993 | US5266807 Passive infrared detection system |
| 11/25/1993 | WO1993023772A1 Fail-safe scanning circuit and sensor of multi-optical axis beam type |
| 11/25/1993 | WO1993023741A1 Device for measuring reflectance and fluorescence of in-situ soil |
| 11/25/1993 | WO1993023740A1 Device for bubble detection in a liquid flowing through a tube |
| 11/18/1993 | DE4315264A1 Optical contactless edge detection of paper - using rearward-scattered light detector at angle to horizontal not greater than corresp. laser light emitted angle and using forward scattered light detector. |
| 11/16/1993 | US5262885 Control circuit and data transmission device provided with such a circuit |
| 11/16/1993 | US5262647 Infrared detector with pyroelectric detector element and chopper control circuit |
| 11/16/1993 | US5262640 Window mounted optical moisture sensor having light pipes with distal ends |
| 11/16/1993 | US5262637 Reprographic media detector and methods for making and using |
| 11/16/1993 | US5262636 Proximity sensor apparatus for laser diode |
| 11/11/1993 | DE4215272A1 Transmitter, receiver and circuit for photoelectric intruder detection - evaluates time difference between zero-crossings of signals from photodetector output shaper and modulation-oscillator-driven Schmitt trigger |
| 11/10/1993 | EP0569203A2 Alignment system for multiple color pen cartridges |
| 11/09/1993 | US5260765 Beam alignment apparatus and method |
| 11/09/1993 | US5260564 Apparatus for detecting objects in sheet form with light redirecting means |
| 11/03/1993 | EP0567762A1 Device for detecting the position of an edge of a web |
| 11/03/1993 | EP0567717A1 Optoelectronic barrier |
| 11/02/1993 | US5258623 Positioning apparatus for optical element mounting operation having a positioning light receiving element formed on an optical element substrate |
| 11/02/1993 | US5258610 Method and apparatus for sensing the presence of a sheet by sheet causing attenuation of radiation |
| 10/27/1993 | EP0566852A2 Human body detection system |
| 10/26/1993 | US5256873 Multiple station through beam photoelectric sensor |
| 10/26/1993 | US5256155 Drop detection method and apparatus |