| Patents for G01C 3 - Measuring distances in line of sight; Optical rangefinders (8,275) |
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| 05/29/1991 | CA2029122A1 Optical rangefinder with through the viewfinder readout |
| 05/22/1991 | EP0428027A2 Optical distance measurement device |
| 05/14/1991 | CA1284202C Pulse proximity detection |
| 05/08/1991 | EP0287592B1 Spurious electromagnetic energy discriminator for electro-optical inspection systems |
| 05/07/1991 | CA1283966C Method and apparatus for determining the distance of an object |
| 05/02/1991 | EP0424409A1 Range finding device |
| 04/17/1991 | EP0422249A1 Optical distance sensor |
| 04/16/1991 | US5008543 System for determining the position of at least one target by triangulation |
| 04/09/1991 | US5006700 Distance-measuring apparatus for camera |
| 04/09/1991 | US5005970 Distance detecting apparatus |
| 03/27/1991 | EP0419320A1 Automatic harmonizing device for an opto-electronic system |
| 03/26/1991 | US5002388 Optical distance measuring apparatus having a measurement error compensating function |
| 03/26/1991 | CA1282145C Non-contact sensor with particular utility for measurement of roadprofile |
| 03/20/1991 | CN2073578U Non-rod distance-measuring plane table |
| 03/19/1991 | US5000565 Optical rangerfinder with through the viewfinder readout |
| 03/19/1991 | CA1281576C Auxiliary light projecting apparatus for a focus detecting system |
| 03/06/1991 | EP0415405A2 Device for obtaining distance information from an object by instantaneously illuminating the object by a light beam |
| 02/26/1991 | US4996415 Apparatus for detecting the presence and position of an object |
| 02/20/1991 | CN2071782U Line height finder |
| 02/19/1991 | US4993836 Method and apparatus for measuring form of three-dimensional objects |
| 01/31/1991 | DE3922085C1 Close distance measurer for two motor vehicles - sends light pulses and HF pulses for evaluation for safety precaution |
| 01/30/1991 | EP0409875A1 Method and sensor for opto-electronic angle measurements. |
| 01/16/1991 | EP0408224A2 Computational methods and electronic camera apparatus for determining distance of objects, rapid autofocusing and obtaining improved focus images |
| 01/15/1991 | US4985847 For a vehicle |
| 01/08/1991 | US4983033 Automatic range finder for camera |
| 01/02/1991 | EP0405423A2 Method and device to determine the position of an object |
| 01/01/1991 | US4981353 Position locating apparatus for an underwater moving body |
| 12/27/1990 | EP0403588A1 Method of intrusion detection |
| 12/12/1990 | EP0401909A1 Method of and device for determining the position of a surface |
| 12/11/1990 | US4976543 Method and apparatus for optical distance measurement |
| 11/22/1990 | EP0398563A2 Fiber optic triangulation gage |
| 11/18/1990 | CA2016512A1 Fiber optical triangulation gage |
| 11/06/1990 | US4968146 Optical depth measuring device to be mounted on drilling power tool |
| 10/30/1990 | US4967183 Method of intrusion detection over a wide area |
| 10/24/1990 | CN2064501U Rangefinders |
| 10/23/1990 | US4965840 Method and apparatus for determining the distances between surface-patches of a three-dimensional spatial scene and a camera system |
| 10/23/1990 | US4965439 Microcontroller-controlled device for surveying, rangefinding and trajectory compensation |
| 10/20/1990 | WO1990013001A1 Optical distance sensor |
| 10/20/1990 | CA2032416A1 Optical distance sensor |
| 10/18/1990 | WO1990012284A1 An arrangement for performing position determination |
| 10/16/1990 | US4963024 Method and apparatus for determining K factor |
| 10/10/1990 | EP0391498A1 A system of "Computer Aided Surveying" for obtaining digital, 3D topograpic information |
| 10/04/1990 | DE4010220A1 Measuring arrangement for distance between two vehicles |
| 09/04/1990 | US4954861 Method of driving multiple flash rangefinder |
| 08/28/1990 | US4952911 Scanning intrusion detection device |
| 08/28/1990 | US4952816 Focus detection system with zero crossing detection for use in optical measuring systems |
| 08/14/1990 | US4949115 Automatic focusing projector |
| 08/14/1990 | US4949074 Method of intrusion detection |
| 08/14/1990 | US4948246 Leading-vehicle detection apparatus |
| 08/07/1990 | US4947202 Distance measuring apparatus of a camera |
| 08/01/1990 | EP0379575A1 Method and apparatus for determining k factor and depth measurements |
| 07/31/1990 | US4945377 Phase difference detecting apparatus |
| 07/25/1990 | EP0379425A1 System for determining the position of at least one target by means of triangulation |
| 07/24/1990 | US4943157 Fiber optic triangulation gage |
| 07/18/1990 | EP0377716A1 A scanning intrusion detection device |
| 07/17/1990 | US4942533 Mobile range finder |
| 07/17/1990 | US4941263 System for aiding a driver's depth perception |
| 07/04/1990 | EP0306485B1 Machine-tool, preferably drilling machine |
| 07/03/1990 | US4938589 Sensor with integrated signal processing for one- to three-dimensional positioning |
| 07/03/1990 | US4938588 Distance detecting apparatus |
| 06/26/1990 | US4936676 Surface position sensor |
| 06/20/1990 | EP0373979A1 Method to estimate the distance between a fixed object and a moving vehicle and device for carrying out this method |
| 06/19/1990 | US4934810 Method and apparatus for controlling the quantity of emitted light in an optical measuring head |
| 06/13/1990 | EP0372068A1 A method of intrusion detection over a wide area |
| 06/05/1990 | US4931937 Distance detector mounted on vehicle |
| 06/05/1990 | US4930896 Surface structure measuring apparatus |
| 05/30/1990 | EP0370770A1 Improved ranging system |
| 05/23/1990 | EP0368995A1 An intrusion detection device |
| 05/22/1990 | US4928175 Method for the three-dimensional surveillance of the object space |
| 05/08/1990 | US4924105 Optical measuring device with alternately-activated detection |
| 05/01/1990 | US4922281 Distance measuring device for automatic focusing camera |
| 04/18/1990 | CN1041446A Ranging device for simulator of direct aiming shoot |
| 04/17/1990 | US4917490 Boresight alignment measuring apparatus and method for electro-optic systems |
| 04/10/1990 | US4916302 Apparatus for and method of measuring distances to objects present in a plurality of directions |
| 04/03/1990 | US4913546 Range finder |
| 03/28/1990 | CN2055245U Transmission wire altimeter |
| 03/27/1990 | US4911551 Apparatus for determining the real or virtual distance of a light source from a measurement plane |
| 03/27/1990 | US4911550 Optical type displacement measuring apparatus |
| 03/20/1990 | US4909624 Active distance measuring apparatus |
| 02/27/1990 | US4905034 Automatic focusing projector |
| 02/20/1990 | US4903009 Intrusion detection device |
| 02/20/1990 | US4902130 Laser ray projector and remote measuring device comprising at least two of these projectors |
| 02/13/1990 | US4900940 Optical system for measuring a surface profile of an object using a converged, inclined light beam and movable converging lens |
| 02/13/1990 | US4900146 Multiple channel optical flying spot triangulation ranger system |
| 02/06/1990 | US4899041 Light sensor for detecting an object in a certain distance |
| 01/30/1990 | US4897536 Optical axis displacement sensor with cylindrical lens means |
| 01/30/1990 | US4896606 Optical proximity fuze |
| 01/25/1990 | WO1990000736A1 Method and apparatus for determining k factor and depth measurements |
| 01/17/1990 | CN1038879A Error in measure offset technique |
| 12/28/1989 | WO1989012837A1 Range finding device |
| 12/12/1989 | US4887066 Capacitive obstacle detector for vehicles in reverse gear |
| 12/12/1989 | US4886347 Range-finding binocular |
| 12/07/1989 | DE3818787A1 Device for non-contact optical distance measurement according to the static triangulation method |
| 12/05/1989 | US4884888 Method and device for contactless optical measurement of distance changes |
| 11/30/1989 | WO1989011710A1 An intrusion detection device |
| 11/30/1989 | WO1989011709A1 A scanning intrusion detection device |
| 11/30/1989 | WO1989011708A1 Method of intrusion detection |
| 11/30/1989 | WO1989011707A1 A method of intrusion detection over a wide area |
| 11/29/1989 | EP0343297A2 Optical type displacement measuring apparatus |
| 11/14/1989 | US4880307 Method of detecting the position of an object |