Patents for G01V 8 - Prospecting or detecting by optical means (8,157)
04/1987
04/14/1987US4658244 Air-in-line detector
04/01/1987EP0215795A1 Method and device for non-contact detection of plants
03/1987
03/31/1987US4653855 Apparatus and process for object analysis by perturbation of interference fringes
03/24/1987US4652742 Arrangement for and method of determining two or more superimposed film sheets
03/17/1987US4650990 Processor-controlled light screen wherein light beam carries coded signals
03/12/1987DE3532197A1 Light curtain
03/11/1987EP0213587A2 Broken filament detector and system therefor
03/10/1987US4649270 Photo-electric object detector having removable field stop means
03/10/1987US4648710 Blind guide device
02/1987
02/24/1987US4646071 Infrared-ray sensitive alarm device built into electronic equipment
02/24/1987US4645930 Motion detector
02/24/1987US4645919 Photosensitive motion detector apparatus
02/17/1987US4644147 Method for deflection of optical rays and an optical arrangement therefor
02/12/1987WO1987000929A1 CIRCUIT FOR EVALUATING THE SIGNALS FROM A SERIES OF n PHOTODETECTORS SCANNED IN RAPID SUCCESSION
02/10/1987US4642454 Infrared intrusion detector with field of view locator
02/04/1987EP0210826A2 Method of observing bore holes, and apparatus therefor
01/1987
01/27/1987US4639607 Device for sensing a recording medium in a line printer
01/08/1987DE3524114A1 Device for detecting fluorescing substances on the surface of the earth
01/06/1987US4635215 Article or seed counter
01/06/1987US4634855 Photoelectric article sensor with facing reflectors
12/1986
12/30/1986US4633081 Photoelectric switch
11/1986
11/25/1986US4625113 Motion detector having sensing means which determine the shape of the field of sensitivity
11/20/1986WO1986006816A1 Safety system for use in connection with working machines
11/11/1986US4622459 Tonometer with optical sensing and variable attenuator
11/05/1986EP0200006A2 Grimballed sphere
10/1986
10/28/1986US4620091 Mounting support for several phototransmitters and photoreceivers
10/21/1986US4618854 Double eye type crime preventing sensor system
10/21/1986US4618770 Electrical controller having a window discriminator
10/15/1986EP0197583A1 Arrays of lenses
10/14/1986US4617463 Segmented optical system for an alarm system
10/08/1986EP0196822A2 Air-in-line detector
10/08/1986EP0196579A1 Photoelectric sensor using light reflection and/or a light barrier
10/01/1986EP0196188A2 Improvements in or relating to pyroelectric detectors
09/1986
09/16/1986US4612538 Nail detector system
09/09/1986US4610707 Fiber glass strands
08/1986
08/20/1986EP0191591A2 Electro-optic sensor
08/20/1986EP0191527A1 Infra-red radiation detector devices
08/20/1986EP0191155A1 Infrared intrusion detector
08/20/1986CN86100687A Optical circuit
08/12/1986US4605850 Light barrier apparatus for monitoring doorways
08/12/1986US4605848 Photosensor and output control therefor
08/06/1986EP0189536A1 Infrared intrusion detector
07/1986
07/29/1986US4603329 Device and method for sensing the presence or absence of newly formed parts in conjunction with parts forming equipment
07/16/1986EP0187299A1 Photosensor
07/15/1986CA1207865A1 Optical system for ceiling mounted passive infrared sensor
07/15/1986CA1207864A1 Method of indicating and device for performing the method
07/02/1986EP0186226A1 Intrusion detection system with an anti-masking device
06/1986
06/19/1986WO1986003597A1 Fluid drop detection system
06/03/1986US4593189 Proximity detector for a body scanner
05/1986
05/27/1986US4591708 High-intensity opto-electronic sensor having low power consumption
05/27/1986CA1205158A1 Infrared detector for determining the presence of an intruder in a monitored area
05/22/1986WO1986003002A1 Drop detection system with mirror element
05/20/1986US4590410 Object sensing apparatus
04/1986
04/30/1986EP0179522A2 Apparatus and process for object analysis by pertubation of interference fringes
04/29/1986US4585940 Optical detector
04/09/1986EP0177170A2 Filter press
04/09/1986EP0098290B1 Apparatus for detecting the passage of multiple superposed documents along a feed path
04/08/1986US4581526 Apparatus for photoelectric detection of objects
04/02/1986EP0175783A1 Device for detecting movable objects
04/01/1986CA1202704A1 Down and stuck bottle inspection system
03/1986
03/26/1986EP0175530A2 Article or seed counter
03/19/1986EP0174818A2 A signal processing system for an article counter
03/04/1986US4574009 Quick-disconnect housing and nipple
03/04/1986CA1201507A1 Infrared-type intrusion detector
02/1986
02/18/1986US4571055 Transport item detecting arrangement
02/12/1986EP0170984A2 Drop detecting system
02/11/1986US4570157 Infrared intrusion alarm system capable of preventing false signals
02/05/1986EP0170008A2 Light pen or barrier
02/04/1986US4568827 Light barrier apparatus
01/1986
01/28/1986US4566337 Opto-electronic position sensing
01/16/1986WO1986000420A1 Method and device for non-contact detection of plants
01/16/1986WO1986000347A1 Method and apparatus for detecting knit/woven fibers
01/15/1986EP0168202A1 Method and apparatus for monitoring sheets
01/15/1986EP0168023A1 Opto-electronic device for detecting the passage of objects
01/14/1986US4564756 Proximity sensor with a light-emitting diode which simultaneously emits and detects light
01/07/1986US4563577 Optical sensor and reflector to reflect a different wavelength
12/1985
12/24/1985US4561116 Optical remote-control device for a residence door
12/24/1985US4560912 Object sensing apparatus for an automatic door
12/24/1985US4560279 Optical method for remote determination of the geological nature of a homogeneous surface
12/18/1985EP0165116A1 System for optical detection from a distance
12/17/1985US4559452 Apparatus for detecting edge of semitransparent plane substance
11/1985
11/26/1985US4555633 Photoelectric dimension measuring system
11/19/1985US4554459 Monitoring system for a predetermined field of view
11/12/1985CA1196494A1 Borehole survey instrument
11/05/1985US4551711 Infrared-type intrusion detector
10/1985
10/24/1985WO1985004728A1 Device for detecting movable objects
10/09/1985EP0157117A1 Testing device for an intrusion-signalling apparatus
10/08/1985US4546246 Light barrier with spectrally filtered reflection means
10/02/1985EP0156192A1 Method for detecting position of conveyed articles
09/1985
09/10/1985US4540887 High contrast ratio paper sensor
09/03/1985US4539474 Optical switch for an automatic door
08/1985
08/21/1985EP0151854A2 Opto-electronic position sensing
08/15/1985WO1985003589A1 Test device for intrusion warning device
07/1985
07/24/1985EP0149123A2 Opto-electronic proximity sensor
07/17/1985EP0148593A1 Segmented optical system for an alarm system
07/17/1985EP0148368A2 Movement annunciator
07/10/1985EP0147925A1 Combination infrared microwave intrusion detector
06/1985
06/26/1985EP0146070A2 Record carrier scanning device for line printers
06/18/1985CA1189164A1 Detecting the presence or absence of a coating on a substrate
06/04/1985US4521861 For sensing electromagnetic energy
1 ... 69 70 71 72 73 74 75 76 77 78 79 80 81 82