Patents for G01J 1 - Photometry, e.g. photographic exposure meter (22,989) |
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08/31/1983 | EP0087299A2 Multilayer avalanche photodetector |
08/30/1983 | US4401386 Light measuring device |
08/24/1983 | EP0086535A1 Photosensitive compositions and products |
08/23/1983 | US4400691 Analog-to-digital converter for cameras |
08/23/1983 | US4400087 Light measuring circuit |
08/18/1983 | WO1983002866A1 Improvements in or relating to light detecting and measuring devices |
08/18/1983 | WO1983002842A1 Teaching or amusement apparatus |
08/16/1983 | USRE31350 Photodetector arrangements and circuits |
08/09/1983 | US4397553 Photographic spot measuring apparatus |
08/09/1983 | US4397552 Instrument for measurement of exposure from a laser radiation |
08/09/1983 | US4397533 Photographic light measuring device |
07/27/1983 | EP0084391A2 Atomic absorption spectrophotometer |
07/26/1983 | US4395099 Scene brightness measuring system |
07/26/1983 | CA1150806A1 Infra-red detector elements and their manufacture |
07/20/1983 | EP0083761A1 Output control device for light detectors for photometers |
07/19/1983 | US4394570 Photoelectric conversion circuit |
07/19/1983 | US4394078 Method of controlling exposure |
07/13/1983 | EP0083368A1 Radiant energy detection apparatus |
07/12/1983 | US4392727 Camera exposure control devices with smoothing circuit |
07/07/1983 | WO1983002323A1 Photomultiplier detector protection device and method |
07/05/1983 | US4391522 Test apparatus for determining resistance to light and weather influences |
07/05/1983 | US4391521 Photometer having asymmetrical aperture and with compensation for direction of incidence |
06/28/1983 | US4390958 Electro-optical measuring apparatus to cover zones of different widths and obtain computed utilization signals for printing apparatus |
06/21/1983 | CA1148394A1 Area radiation target |
06/14/1983 | US4388528 Photoelectronic apparatus |
06/09/1983 | WO1983002003A1 Measuring intensities of illumination over a light beam |
06/01/1983 | EP0080114A1 Radiation detector with sensor elements |
05/31/1983 | US4385833 Apparatus for reception and radiation of electromagnetic energy in predetermined fields of view |
05/26/1983 | WO1983001852A1 A method for comparison between a first optical signal and at least one other signal |
05/25/1983 | EP0079651A1 Photo-electric detection structure |
05/18/1983 | EP0079282A1 Method and device for fast energy measuring, and application to the measuring of the energy produced by a pulse laser |
05/17/1983 | US4384337 Zonal ink distribution measuring method and system |
05/11/1983 | EP0078443A2 Fire detection system |
05/11/1983 | EP0078442A2 Fire detection system with IR and UV ratio detector |
05/10/1983 | US4383288 Adjustable light collector and sampler therefor |
05/03/1983 | US4382226 Electrolytic cell for actinometers |
05/03/1983 | US4381890 Incident light filter for cameras |
04/27/1983 | EP0077648A2 Circuits for regulating the output voltage of a device, for instance a photocell |
04/26/1983 | US4381455 Flame detector including detector testing apparatus |
04/06/1983 | EP0075767A1 Method for the determination and evaluation of photometric signals and device for carrying out the method |
03/30/1983 | EP0075222A1 Method and compensation circuit for analyzers |
03/30/1983 | EP0075044A1 Aid for measuring the surplus of light in light barriers |
03/22/1983 | CA1143460A1 Manufacture of an infra-red detector element, and detector elements so manufactured |
03/16/1983 | EP0074225A1 Radiometer |
03/15/1983 | CA1143032A1 Ultraviolet light control |
03/09/1983 | EP0073467A2 A data compression system for a photometer |
03/09/1983 | EP0073425A2 Dual photoelectric cell assembly |
02/23/1983 | EP0072443A2 Method and apparatus for measuring the illumination uniformity in a ring field projection system |
02/22/1983 | US4375034 Passive infrared intrusion detection system |
02/15/1983 | US4373810 Automated exposure-contrast control index meter |
02/15/1983 | US4373809 Solar energy flux integrator |
02/15/1983 | CA1141193A1 Apparatus and method for measuring the distribution of radiant energy produced in particle investigating systems |
02/08/1983 | US4372680 Miniature spectrally selective dosimeter |
02/01/1983 | US4371897 Fluorescent activated, spatially quantitative light detector |
02/01/1983 | CA1140653A1 Ultraviolet light dosage monitor |
01/26/1983 | EP0070601A1 Infra-red radiation detector |
01/26/1983 | EP0020349B1 Supervision device with a passive optical detector for electrical arcs in a circuit-breaker |
01/20/1983 | WO1983000257A1 Radiant energy detection apparatus |
01/18/1983 | US4369364 Monitoring device with an optical sensor for the detection of interference arcs in electrical systems |
01/05/1983 | EP0068456A2 Electromagnetic radiation detection system comprising a radiation limiting shield |
12/28/1982 | CA1138556A1 Flame sensing system |
12/21/1982 | US4364662 Dual mode camera exposure meters |
12/21/1982 | US4364650 Exposure control method and device |
12/14/1982 | CA1137331A1 Method and apparatus for measuring equivalent sphere illumination in the field |
12/14/1982 | CA1137327A1 Holographic plate exposure meter |
12/07/1982 | CA1203306B Sensor integrator system |
12/07/1982 | CA1137190A1 Sensor integrator system |
12/07/1982 | CA1136884A1 Apparatus and method for measuring scattering of light in particle detection systems |
12/01/1982 | EP0065571A1 Gate modulation input circuit with polycrystalline silicon resistors |
11/30/1982 | US4361765 Ternary liquid scintillator for optical fiber applications |
11/30/1982 | US4361758 Sun position sensor for two axis tracking |
11/17/1982 | EP0064811A1 Flame detector |
11/17/1982 | EP0064746A2 Sunlight direction sensor |
11/09/1982 | US4358679 Calibration of analyzers employing radiant energy |
11/02/1982 | US4357079 Slit pattern projecting apparatus having alignment detecting means |
11/02/1982 | CA1134644A1 Multispectral light detection system |
10/26/1982 | CA1134474A1 Photoelectronic apparatus with protection from effects of undesired light |
10/26/1982 | CA1134168A1 Two beam alternating light colorimeter |
10/12/1982 | US4353629 System and method for calculating a light information value |
10/05/1982 | US4352982 Photodiode circuit using a low noise artificial load resistor |
10/05/1982 | US4352559 Logarithmic primary testing system for security validation |
09/28/1982 | CA1132375A1 Irradiance analyzer for high power lasers |
09/28/1982 | CA1132372A1 High energy laser beam sampling meter |
09/22/1982 | EP0060743A1 Photodetector sensitive in the near infrared range |
09/21/1982 | US4350890 Apparatus for monitoring low level light emission in underwater environment |
09/21/1982 | CA1132184A1 Light integrator circuit with built-in anticipation |
09/15/1982 | EP0059836A1 Optical beam splitter |
09/14/1982 | US4349255 Photographing apparatus for an endoscope |
09/07/1982 | US4348664 Device for measuring ultraviolet light exposure |
09/07/1982 | US4348110 Charging current integrating type photodetectors |
09/01/1982 | EP0059025A1 An optical system for a spectrophotometer |
08/31/1982 | US4347530 Scanning mirror arrangement |
08/10/1982 | US4344172 System for measuring the radiation power of power-modulated transmitters, in particular of lasers |
07/28/1982 | EP0056671A1 Photoelectric detector device |
07/27/1982 | US4341956 Apparatus and method for compensating the dark current photoelectric transducers |
07/27/1982 | US4341471 Apparatus and method for measuring the distribution of radiant energy produced in particle investigating systems |
07/27/1982 | US4341448 Light receiving element assembly in a camera |
07/13/1982 | US4339748 Multiple range passive infrared detection system |
07/13/1982 | US4339199 Pulsed laser beam intensity monitor |
06/30/1982 | EP0055027A2 Apparatus for deriving an electrical signal from a radiation flash and instruments incorporating such apparatus |