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