Patents for G01J 1 - Photometry, e.g. photographic exposure meter (22,989)
09/1978
09/26/1978US4117328 Infrared radiation sensitive image pick-up device
09/12/1978CA1038272A1 Sunburn dosimeter
09/05/1978US4112439 Digital display circuit for a photographic exposure meter
09/05/1978US4111561 Defocused unicell photometer with diffusion zone
08/1978
08/29/1978US4110049 Sun meter
08/29/1978CA1037281A1 Standard for spectral reflectance
08/22/1978CA1037157A1 Two-dimensional radiant energy array computers and computing devices
08/22/1978CA1037147A1 Two-dimensional radiant energy array computers and computing devices
08/15/1978US4107721 Phototransistor
08/15/1978CA1036382A1 Photometer mode indicator
08/08/1978US4106035 Photometric circuit
08/08/1978US4105300 Defocused unicell photometer with aspheric zone
07/1978
07/25/1978US4103167 Ultraviolet liquid purification system
07/25/1978US4102581 Unicell photoelectric photometer
07/25/1978US4102580 System for the measurement of ultra-low stray light levels
07/25/1978US4102177 Densitometer
07/18/1978US4101221 Process for the photo-optical measurement of the absorption behavior of solid, liquid and gaseous media
07/11/1978US4100424 Method for controlling a photographic printing exposure
07/11/1978US4100407 Photoelectric conversion circuit
07/11/1978US4099885 Digital display circuit for camera exposure meter
06/1978
06/20/1978US4095904 Device for objective checking for foreign bodies in optically transparent cylindrical containers filled with liquids
06/13/1978US4095241 Photo-sensing circuit
06/13/1978US4095098 Ratiometric transparency meter
06/06/1978US4093384 Narrow angle, narrow bandwidth optical receiver system
05/1978
05/23/1978US4091279 Method and means for equalizing the sensitivity of a multi-element sensor array
05/23/1978US4091277 Photon detection and counting system
05/16/1978US4090071 Photometric instrument with thermoelectric control of a photovoltaic semiconductor detector
05/09/1978US4089015 Dual function exposure time display and control circuit for SLR camera
05/09/1978US4089012 Digital exposure time indicating circuit for camera
05/09/1978US4089010 Display circuit for a camera
05/09/1978US4088407 High pressure fluorescence flow-through cuvette
05/02/1978US4087688 Infrared radiation-burglary detector
05/02/1978US4087186 Light measuring circuit for a photometer
04/1978
04/25/1978US4086489 Ultra violet radiation personnel hazard meter
04/18/1978US4085411 Light detector system with photo diode and current-mirror amplifier
04/04/1978US4083055 Exposure information quantizing circuit utilizing shift register
03/1978
03/28/1978US4081793 Device for reading out the charge condition of a phototransistor
03/21/1978US4080532 Ferroelectric imaging system
03/21/1978US4080074 Automatic zeroing circuit to compensate for dark currents or the like
03/07/1978US4077699 Optical devices
02/1978
02/28/1978US4076977 Light measuring circuit with stray capacitance compensating means
02/21/1978US4075507 Circuit arrangement for evaluating signals, particularly output signals of optical measuring devices
02/21/1978US4075493 Optical temperature measurement technique utilizing phosphors
02/07/1978US4072962 Metering device
02/07/1978US4072864 Multilayered slant-angle thin film energy detector
01/1978
01/24/1978US4069716 Apparatus and method for use in determining conditions related to a plant
01/10/1978US4068222 Circuit arrangement for automatic level control for optical sensors with pulsed radiation, for example for surveillance equipment
01/03/1978US4067024 Calculator
12/1977
12/27/1977US4065672 Ultraviolet sensor and exposure instrument
12/27/1977US4065668 Photodiode operational amplifier
12/20/1977US4064515 Analog to digital converter for a plurality of analog channels
12/06/1977US4061925 Method and apparatus for measuring radiation from a plurality of light sources
12/06/1977US4061922 Ultraviolet sensing device
12/06/1977US4061431 Light measuring and indicating circuit
11/1977
11/22/1977US4059835 Bypass circuits for improving the response of electric shutters
11/22/1977US4059359 Method and apparatus for quantizing radiation beams by optical diffraction
11/15/1977US4058807 Digital antilogarithmic converter circuit
11/08/1977US4057809 Exposure control circuit
11/08/1977US4057734 Spectroscopic apparatus with balanced dual detectors
10/1977
10/25/1977US4055761 Light receiving device for photoelectric conversion element
10/25/1977US4055383 Method of and assembly for measuring equivalent sphere illumination
10/11/1977US4053236 Absorbance measuring photometer
10/04/1977US4052616 Infrared radiation-burglary detector
10/04/1977US4052120 Optical apparatus for producing a light curtain
09/1977
09/27/1977US4051491 Indicating exposure meter for a camera
09/27/1977US4051490 Photographic exposure meter circuit having temperature compensation
09/27/1977US4051375 Discriminating flame detector
09/27/1977US4051363 Split-path receiver for fiber optics application
09/20/1977US4049970 Pulsed radiation detector system
09/20/1977US4049963 Photoelectric measuring device
09/13/1977US4048514 Pyroelectric non-linear optical component
09/13/1977US4048500 Infrared background suppression
09/13/1977US4047819 Apparatus for measuring optical density with stray light compensation
09/06/1977US4047038 U.V. detector
09/06/1977US4047032 Standard for spectral reflectance
08/1977
08/30/1977US4045142 Metering device for cameras
08/23/1977US4044251 Electromagnetic radiation detector with large area sensing medium
08/23/1977US4043677 Exposure meter
08/16/1977US4042417 Solar cells
08/16/1977US4042304 Christiansen effect detector
08/09/1977US4040751 Unicell photometer device
08/09/1977US4040747 Optical analyzer for agricultural products
07/1977
07/26/1977US4038555 Photometric measuring system
07/26/1977US4037972 Measuring apparatus
07/26/1977US4037970 Optical analyzer for agricultural products
07/26/1977US4037959 Means for real-time laser source characterization
07/19/1977US4037113 Flame detector
07/12/1977US4035088 High energy laser beam sampling meter
07/12/1977US4035086 Multi-channel analyzer for liquid chromatographic separations
07/05/1977US4033698 Apparatus for textile color analysis
06/1977
06/28/1977US4032953 Sensing circuits
06/28/1977US4032801 Electromagnetic radiation intensity comparator apparatus
06/28/1977US4032777 Photomeric monitoring device
06/21/1977US4031399 Fluorometer
06/21/1977US4030838 Photometer mode indicator
06/14/1977US4029966 Radiation-detecting devices and apparatus
06/14/1977US4029421 Digital exposure meter
06/07/1977US4027981 Storage circuit for photometer
05/1977
05/31/1977US4027164 Circuitry for continually monitoring radiation detection systems
05/17/1977US4024560 Pyroelectric-field effect electromagnetic radiation detector