Patents for G01J 1 - Photometry, e.g. photographic exposure meter (22,989)
09/1990
09/16/1990CA2012148A1 Infrared spectrometer
09/13/1990DE3941726A1 Raster microscopic recording of fluorescence decay time - by measuring amplitudes of DC and HF modulated components of fluorescent light stimulated by modulated laser beam
09/13/1990CA2010165A1 Compact semi-programmable device for reading reagent test strips and method relating thereto
09/12/1990EP0386608A1 Device for modulating beams in the light path of photometric analysers
09/11/1990US4956554 Pyroelectric infra-red detectors and their method of manufacture
09/11/1990US4955946 Respiratory CO2 detector circuit with high quality waveform
09/05/1990EP0385803A2 An optical element device
09/05/1990EP0385256A2 Two-wavelength type respiratory gas concentration measuring apparatus
09/05/1990EP0385135A1 Position-sensitive photodetector
09/05/1990EP0294379A4 Purge air system for a combustion instrument
09/04/1990US4954972 Color signature sensor
09/04/1990US4953976 Gas species monitor system
08/1990
08/29/1990EP0384564A1 Photosensing device based on tunnel effect
08/29/1990EP0384377A2 Optical sensing system
08/29/1990EP0384298A2 Gas analyzer
08/29/1990EP0165312B1 Pre-amplifier in focal plane detector array
08/29/1990CN2061299U Incident / reflecting type electronic light meter
08/29/1990CN1009392B Sensitivity enhanced screen made of compound lead for industrial x-ray fanlt detection
08/28/1990US4952808 Thermal radiation detection apparatus
08/28/1990US4952796 Light detection circuit having a junction reverse-biased by a current generator
08/28/1990US4952788 Method of photoelectric detection with reduction of remanence of a phototransistor, notably of the NIPIN type
08/25/1990WO1990010201A1 Sun exposure monitoring device
08/25/1990CA2047734A1 Sun exposure monitoring device
08/23/1990WO1990009602A1 Reservoir fiber optic chemical sensors
08/22/1990EP0383390A1 Optical coherent receiver
08/22/1990EP0383072A2 Method and device for the measurement of the absorption of radiation through a medium
08/21/1990US4951106 Detector device for measuring the intensity of electromagnetic radiation
08/21/1990US4951082 Three-dimensional multi-pattern photo-metering apparatus
08/21/1990US4951077 Methods and device for measuring the brightness of an object
08/21/1990US4950421 Dewar cryopumping using molecular sieve
08/17/1990CA2010015A1 Optical coherent receiver
08/17/1990CA2009983A1 Reservoir fiber optic chemical sensors
08/16/1990EP0381883A1 Optical examination apparatus
08/16/1990DE3903943A1 Method and devices for examining the relative radiation flux density of electromagnetic beams, especially for determining the radius of Gaussian laser beams
08/14/1990US4948249 Headlight aiming and light pattern testing apparatus and method
08/09/1990WO1990008946A1 Optical detection apparatus for counting optical photons
08/08/1990EP0381148A1 Optical calorimeter system for executing real and short time calorimetric measurement of optical power
08/08/1990CN1044531A Photoelectric detector with internal modulation and indirect coupling
08/07/1990US4947400 Semiconductor apparatus
08/07/1990US4947044 Method and apparatus for covertly viewing a target using infrared radiation
08/07/1990US4947032 Detection circuit for a light-sensitive element which is substantially insusceptible to ambient light level
08/01/1990EP0379671A2 Noise reduction for photodiode arrays
07/1990
07/31/1990US4945416 Ultra-rapid electronic camera
07/31/1990US4945378 Circuit for detecting back light
07/31/1990US4945244 Electronic infrared detector
07/31/1990US4945227 Avalanche photodiode quenching circuit
07/31/1990US4945225 Signal discriminator
07/31/1990US4945224 Optical waveform observing apparatus
07/31/1990US4944155 Vacuum separator for dewar flask cold exchange systems
07/26/1990WO1990008415A1 High-frequency discharge-excited laser
07/26/1990WO1990008337A1 Infrared thermometer with fiber optic remote pickup and method
07/25/1990EP0379425A1 System for determining the position of at least one target by means of triangulation
07/25/1990EP0379281A2 Web inspecting method and apparatus
07/25/1990EP0378817A1 Sensor and device for the measurement of radiant energy, in particular the energy associated with radio-frequency, microwave and light radiation signals
07/24/1990US4943142 Imaging microspectrofluorimeter
07/18/1990EP0378324A2 Circular scan streak tube with electronic memory and readout
07/18/1990EP0378283A2 Quality inspection device for printed matter and method thereof
07/17/1990US4942618 Method and apparatus for determining the shape of wire or like article
07/17/1990US4942305 For detecting particles in a gas stream
07/17/1990US4942301 Thermal imaging device
07/17/1990US4942292 Apparatus for following sun light
07/17/1990CA1271822A1 Optical apparatus and method for examining an object
07/17/1990CA1271820A1 Method and apparatus for testing the operability of a probe
07/12/1990WO1990007697A1 Dual fiber optic spectrophotometer
07/10/1990US4941012 Finder optical system for cameras
07/10/1990US4940897 Single crystals of lithium tantalate dispersed in glass binder
07/10/1990US4940328 For sensing a property of an environment
07/04/1990EP0376125A2 Infrared detector
07/04/1990EP0375744A1 A method to measure the angle of incidence for radiation and a detector to carry out the method.
07/04/1990CN1008654B Reflectance mask, its method of produce and its application in thermal insulation apparatus
07/03/1990US4939561 Infrared sensor
07/03/1990US4939376 Light collection device for flame emission detectors
07/03/1990US4938602 Automated process monitoring
06/1990
06/28/1990WO1990007102A1 Sensor for an air-conditioning system in a vehicle
06/27/1990EP0375097A2 Stereolithographic beam profiling
06/27/1990EP0374767A1 Light beam detection utilizing hologram
06/26/1990USRE33241 Device for measuring extremely diminished intensity of light
06/26/1990US4937611 Light metering device
06/26/1990US4937455 Position-sensitive director
06/26/1990US4937454 Radiation detector
06/26/1990US4937449 Device for the inspection of coated and uncoated films
06/26/1990US4937443 Photoelectric ambient light switch with ambient light sensing means
06/26/1990US4937441 Diagnosis apparatus for photo coupler and photo coupler device with diagnosis function
06/20/1990EP0374034A2 A standard substance for optical calibration and method of making same
06/20/1990CN2058483U Faint light detector
06/19/1990US4935631 Radiation meters
06/19/1990US4935630 Lens-sphere optical sensing system
06/19/1990US4935618 Wide bandwidth photoelectric converting circuit
06/19/1990US4935613 Light projecting type distance measuring apparatus
06/19/1990US4934819 Apparatus for measuring transverse moment of an electromagnetic field associated with an optical beam
06/19/1990US4934812 Light detector
06/14/1990WO1990006499A1 Luminosity and temperature detector for internal combustion engine
06/14/1990WO1990006495A1 Thermal ir detector electrode configuration
06/13/1990EP0372494A2 Constant color temperature and intensity illumination source
06/13/1990DE3841244A1 Device for measuring the intensity profile of an infrared laser beam
06/13/1990CN1008400B Optical detector storage effects reduction
06/12/1990US4933560 Pyroelectric infrared sensors
06/12/1990US4933559 Pyroelectric infrared sensor
06/12/1990US4933550 Photodetector system with controllable position-dependent sensitivity
06/12/1990US4933543 Dark signal compensation for diode arrays