Patents for G01J 1 - Photometry, e.g. photographic exposure meter (22,989)
07/1980
07/15/1980US4212535 Ultraviolet radiation dosimeter
07/10/1980WO1980001442A1 Supervision device with an optical detector for electrical arcs in a circuit-breaker
07/10/1980WO1980001420A1 Radiographic apparatus and method for monitoring film exposure time
07/09/1980EP0013025A1 Long-term integrator for a low level voltage source
07/09/1980EP0012818A1 Device for separating an optical signal from the ambient light
06/1980
06/25/1980EP0012174A1 Light measuring apparatus
06/24/1980CA1080336A1 Infrared radiation sensitive image pick-up device
06/10/1980US4207533 Electronic photometer
06/03/1980US4206454 Two channel optical flame detector
05/1980
05/27/1980US4205231 Device for light flux attenuation, especially for additional quenching of scintillations at radionuclide activity determination
05/20/1980US4203668 Digital exposure meter
05/06/1980US4201916 Ultraviolet radiation sensor for use in liquid purification system
05/06/1980US4201472 Apparatus for converting light signals into digital electrical signals
04/1980
04/29/1980US4200934 Circuit arrangement for correcting digital signals
04/15/1980US4198564 Pyroelectric detector circuits and devices
04/15/1980CA1075498A1 Ultraviolet radiation dosimeter
03/1980
03/25/1980US4195234 Infrared intrusion alarm system with temperature responsive threshold level
03/18/1980US4193695 Spectrographic apparatus with chopper means located in the sample cell
03/18/1980CA1073996A1 Photovoltaic system including a lens structure
03/11/1980US4192995 Photometric testing apparatus using shaped diffuser and light beam having a spatially ill-defined energy distribution
02/1980
02/19/1980CA1072187A1 Avalanche photodiode detector
02/12/1980US4188551 Amplifier circuit having photoelectric converter
02/12/1980CA1071743A1 Pyroelectric-field effect electromagnetic radiation detector
02/06/1980EP0007842A1 Device for the detection and localization of radiation
02/06/1980EP0007669A1 The manufacture of an infra-red detector element, and detector elements so manufactured
02/06/1980EP0007667A1 Infra-red detector elements and their manufacture
02/06/1980EP0007644A2 Device for collecting light and process for the manufacture of such a device
02/06/1980EP0007635A2 Device for collecting light and process for the manufacture of such a device
02/06/1980EP0007627A1 Optical receiving system
02/05/1980CA1070975A1 Incubator and radiometric scanner
02/05/1980CA1070972A1 Method and apparatus for monitoring optical radiation
01/1980
01/08/1980US4182573 Exposure meter
01/01/1980US4181863 Photodiode circuit arrangements
01/01/1980US4181413 Electronic shutter control circuit
01/01/1980US4181398 Optical apparatus
12/1979
12/25/1979US4180702 Photo electric light detection devices
12/18/1979US4179606 Flame sensor
12/18/1979CA1068405A1 Dynamic light reference system for film reader
12/11/1979US4178101 Scalar irradiance meter
12/11/1979US4177566 Insolation survey device
12/11/1979CA1068000A1 Device for reading out the charge condition of a phototransistor
12/04/1979US4176955 Exposure meter
11/1979
11/20/1979CA1066799A1 Semiconductor color detector
11/06/1979US4173415 Apparatus and process for rapidly characterizing and differentiating large organic cells
10/1979
10/30/1979CA1065437A1 Device for objective checking for foreign bodies in optically transparent cylindrical containers filled with liquids
10/17/1979EP0004729A2 Apparatus and method for recording high-speed repetitive optical phenomena
10/02/1979CA1063400A1 Glass-filled polymeric filter element
09/1979
09/25/1979US4168910 Optical beam-switching chopper
09/18/1979US4168125 Light sensing device
09/18/1979US4168124 Method and device for measuring the solar energy received at a particular place
09/18/1979CA1062815A1 Device for measuring local radiation absorption or emission in a body
09/18/1979CA1062812A1 Continuously monitoring ratiometer
09/05/1979EP0003828A1 Photometric testing apparatus
09/04/1979US4166955 Radiation detector and method of operating the same
09/04/1979US4166954 Instrument for determining infrared beam vergence
09/04/1979US4166696 Photometer
09/04/1979US4166679 Exposure information setting circuit
08/1979
08/21/1979US4165463 Radiation monitors and method for positioning
08/21/1979US4165180 Automatic computing color meter
07/1979
07/31/1979US4162853 Illumination measurement device
07/31/1979CA1059598A1 Radiation detection apparatus
07/24/1979USRE30051 Chopper arrangement for atomic absorption spectrophotometer
07/24/1979US4162425 Ultraviolet detection tube quenching circuitry
07/24/1979CA1058904A1 Apparatus for textile color analysis using reflected light
07/11/1979EP0002752A2 Photodiode device
07/03/1979US4160164 Flame sensing system
07/03/1979US4160163 Flame sensing system
06/1979
06/26/1979CA1057045A1 Method for monitoring the surface resistivity of metallized film
06/19/1979CA1056931A1 Smoke detector
06/12/1979US4158132 Lighting-control system with cue-level confirmation
06/05/1979US4157560 Photo detector cell
05/1979
05/29/1979US4156562 Digital display device for digitally displaying correct exposure time
05/15/1979US4155010 Process for the photo-optical measurement of the absorption behavior of solid, liquid and gaseous media
05/08/1979US4153369 Convertible dual beam differential spectrofluorometer and absorption meter
05/08/1979US4153368 Electro-optical detector protection device
05/01/1979US4152594 Apparatus for the photo-optical measurement of the absorption behavior of solid, liquid and gaseous media
05/01/1979US4152074 Inverse fourth power photometric calibrator
04/1979
04/19/1979WO1979000180A1 Indicator for a limit value and a measurement value
04/10/1979US4149259 Transversal filter for convoluted image reconstruction
04/10/1979CA1052457A1 Sensing circuit with four terminal semi-conductor device
03/1979
03/27/1979US4146798 Ink feed volume measuring device
03/20/1979CA1050795A1 Diffusion device for compensating for non-uniform photomultiplier cathode sensitivity
03/13/1979CA1050300A1 Unit for use in optical analysis
02/1979
02/13/1979US4139769 Boresight method and apparatus
02/13/1979CA1048294A1 Apparatus for optically analysing a solution
01/1979
01/16/1979CA1046608A1 Ultraviolet radiation detector
12/1978
12/19/1978US4130760 Reusable radiation monitor
12/19/1978CA1044484A1 Directional radiation detector
12/05/1978US4128760 Ambient light compensating circuit
12/05/1978US4128340 Portable test apparatus for low light level devices
11/1978
11/28/1978CA1043445A1 Infra-red dynamic flame detector
11/21/1978CA1043007A1 Gain photocurrent device
11/14/1978US4125330 Photometric apparatus
10/1978
10/31/1978US4123764 Exposure control device
10/31/1978CA1041629A1 Inspection of containers
10/17/1978US4120589 Method and apparatus for measuring the distribution of a light field about the optical axis of a light source
10/10/1978US4119381 Incubator and radiometric scanner
10/03/1978US4118712 Digital light meter system for a camera
10/03/1978CA1039828A1 Light detector for the nanosecond-dc pulse width range
10/03/1978CA1039530A1 Photomultiplier tube gain regulating system