| Patents for G01J 1 - Photometry, e.g. photographic exposure meter (22,989) |
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| 03/10/1992 | US5095212 High-efficiency photon detector |
| 03/10/1992 | CA1296919C Distributed sensor array and method using a pulsed signal source |
| 03/04/1992 | EP0472668A1 Process for determining the condition of a road surface. |
| 03/04/1992 | CN2098021U Double compensation photoelectric transformer |
| 03/03/1992 | US5093875 Optical interconnection apparatus |
| 02/26/1992 | EP0472321A1 Light rod assembly for spark detection system |
| 02/26/1992 | CN2097411U Computer light meter for flash lamp |
| 02/25/1992 | US5091914 High-frequency discharge pumping laser device |
| 02/20/1992 | DE4126963A1 Optical measuring system with frequency converter - producing pairs of photons from light source and followed by beam splitter |
| 02/19/1992 | EP0471074A1 Device for measuring gas optical density |
| 02/19/1992 | EP0471015A1 Apparatus for measuring the mode quality of a laser beam |
| 02/19/1992 | CN1015572B Beam splitter system of brightness meter/colorimeter |
| 02/18/1992 | US5089941 Flux containment device |
| 02/18/1992 | US5088493 Multiple wavelength light photometer for non-invasive monitoring |
| 02/13/1992 | DE4024929A1 Solid Ulbricht sphere for light flux measurement - esp. made of transparent plastics or acrylic] glass |
| 02/11/1992 | US5087816 Infrared detector based on pyroelectric material |
| 02/11/1992 | US5087808 Combined optical power and noise meter |
| 02/11/1992 | US5087312 Plurality of reference and measurement thermocouple junctions; thermally responsive and nonresponsive areas arranged in checkerboard pattern |
| 02/11/1992 | US5087122 Adjustable attenuator for optical transmission system |
| 02/09/1992 | WO1992002959A1 Solid state electromagnetic radiation detector |
| 02/09/1992 | CA2087092A1 Solid state electromagnetic radiation detector |
| 02/06/1992 | WO1992001923A1 Optical scatter imaging |
| 02/06/1992 | WO1992001910A1 An illuminant discriminator with improved boundary conditions |
| 02/06/1992 | DE4024681A1 Measuring power in optical fibre independently of wavelength - using optical coupler, wavelength and power sensors, and calibrating coupler transmission coefficient versus wavelength |
| 02/05/1992 | EP0469793A2 Monolithic integrated optical amplifier and photodetector |
| 02/05/1992 | CN1015413B Photoelectric detector with internal modulation and indirect coupling |
| 01/29/1992 | EP0468474A2 A method of compensating scattered characteristics of infrared detector elements |
| 01/29/1992 | CN2094734U Hand holding no-light torch |
| 01/28/1992 | US5084623 Radiation dosage indicator |
| 01/28/1992 | US5084621 Radiometric standard infrared detector |
| 01/28/1992 | US5083852 Laser beam strop |
| 01/28/1992 | US5083849 Light signal sampling system |
| 01/28/1992 | CA1295048C Apparatus for measuring properties of a laser emission |
| 01/23/1992 | WO1992001315A1 Thermopile having reduced thermal noise |
| 01/22/1992 | EP0467137A2 Measurement and control of laser energy |
| 01/21/1992 | US5083289 Optical calorimeter system for executing real and short time calorimetric measurement of the optical power |
| 01/21/1992 | US5081998 Optically stabilized infrared energy detector |
| 01/14/1992 | US5081347 Photoelectric converting apparatus with reflection-prevention section |
| 01/10/1992 | WO1993016369A1 Improved sensor design |
| 01/09/1992 | WO1992000549A1 Multichannel analogue detection method and device |
| 01/08/1992 | EP0464893A1 Infrared detectors and their manufacture |
| 01/08/1992 | EP0464242A1 Photoemitter |
| 01/08/1992 | EP0464049A1 Electrical quenching circuit. |
| 01/08/1992 | EP0464048A1 Particulate detecting and optical coupling arrangements. |
| 01/07/1992 | US5079595 Organic thin film semiconductor device |
| 01/07/1992 | US5079429 Optical characteristic adjusting apparatus |
| 01/07/1992 | US5079422 Fire detection system using spatially cooperative multi-sensor input technique |
| 01/07/1992 | US5079420 Pyroelectric and other thermal-radiation detectors with film element(s) |
| 01/07/1992 | US5078491 Apparatus for measuring the mode quality of a laser beam |
| 01/07/1992 | CA1294021C Real time adaptive round discrimination fire sensor |
| 01/02/1992 | EP0463982A1 Apparatus for continuous- and pulse analysis of the energy distribution of a power laser beam and apparatus for alignement of this beam |
| 01/02/1992 | EP0463814A2 Improvements in or relating to imagers |
| 12/31/1991 | US5077550 Burner flame sensing system and method |
| 12/27/1991 | EP0462278A1 Device for measuring gas optical density |
| 12/27/1991 | EP0462102A1 A method for detecting external influence on an optical cable. |
| 12/27/1991 | EP0293435B1 Infrared detector with improved heat dissipation |
| 12/27/1991 | EP0269675B1 Parallel processor module for thermal imaging sensors |
| 12/24/1991 | US5075793 Apparatus for detecting intensity-modulated light signals |
| 12/24/1991 | US5075557 Using (allo)phycocyanin dyes |
| 12/18/1991 | EP0461730A1 A method and a system for measuring the power distribution of a radiation beam |
| 12/17/1991 | US5073025 Independent polarization state measurements sensor |
| 12/11/1991 | EP0460019A1 Sun exposure monitoring device |
| 12/10/1991 | WO1991019538A1 Light detector |
| 12/10/1991 | US5072112 Method for realizing a primary photometric standard of optical radiation using a silicon photodiode |
| 12/10/1991 | US5072106 Solar radiation quantity detecting device for automobile air-conditioner |
| 12/10/1991 | US5072105 Solar radiation detecting device and automobile air-conditioner using the same |
| 12/10/1991 | US5071249 Light waveform measuring apparatus |
| 12/10/1991 | CA2084789A1 Light detector |
| 12/10/1991 | CA1293038C Detector system |
| 12/05/1991 | DE4015447C1 Laser power meter - uses polarisation-sensitive semi-transparent mirrors as beam splitter and reflector for diversion of beam |
| 12/04/1991 | EP0458900A1 Reservoir fiber optic chemical sensors |
| 12/03/1991 | US5070244 Gas detection by infrared absorption |
| 12/03/1991 | US5070237 Optical measurement and detection system |
| 12/03/1991 | US5070235 Accumulated exposure detection with exposure terminating attenuator |
| 12/03/1991 | US5069527 Apparatus for measuring the mode quality of a laser beam |
| 11/28/1991 | DE4017051A1 Sensor arrangement for measuring visual conditions outside vehicle - has light receiver, aperture scanning image field region and evaluation circuit comparing standard signal characteristics |
| 11/27/1991 | EP0458429A2 Optical measurement device |
| 11/26/1991 | US5068526 Photoelectric conversion device with voltage source means |
| 11/26/1991 | US5067815 Optical sensor with intermodal interferometry |
| 11/26/1991 | US5067811 Illuminance distribution measuring system |
| 11/21/1991 | EP0457624A1 A gas detector |
| 11/21/1991 | EP0457024A2 Measure of laser-power |
| 11/21/1991 | EP0456802A1 Atomic resonance filter detector employing inert buffer gas |
| 11/21/1991 | EP0456710A1 Optical detection apparatus for counting optical photons |
| 11/20/1991 | CN1014827B Frequency modulated photometric method |
| 11/19/1991 | US5066132 Method of and apparatus for inspecting paint coating |
| 11/19/1991 | US5066126 Optical spectrum analyzer |
| 11/19/1991 | US5066121 Method and apparatus for measuring the flash duration of a flash unit |
| 11/14/1991 | DE4014457A1 Emitted light measurer for lamp - has photocells on strip opposite lamp mount in inner frame pivoting in outer frame |
| 11/14/1991 | CA2016685A1 Sensor for a laser beam target |
| 11/13/1991 | EP0456480A2 A method for driving a photoelectric device and a method for driving an image intensifier using the photoelectric device |
| 11/12/1991 | US5065036 Light detection and control system |
| 11/12/1991 | US5065015 Solar radiation sensor for use in an automatic air conditioner |
| 11/12/1991 | US5065007 Apparatus for measuring light output from semiconductor light emitting element |
| 11/12/1991 | US5064284 Apparatus for measuring the mode quality of a laser beam |
| 11/12/1991 | US5064283 Spectroscopy characterization module |
| 11/10/1991 | CA2016480A1 Noise suppressing circuit for use with an avalanche photodiode |
| 11/09/1991 | WO1991017395A1 An apparatus for detecting carryover particles in the interior of a furnace |
| 11/07/1991 | DE3941210A1 Test device esp. for UV detection - includes fluorescent mineral mounted in black box |
| 11/06/1991 | CN2088243U Laser beam transversal light distribution scanner |