Patents
Sitemap › G01 - Measuring; Testing › G01J - Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infra-red, visible or ultra-violet light; Colorimetry; Radiation pyrometry › G01J 1 - Photometry, e.g. photographic exposure meter
Patents for G01J 1 - Photometry, e.g. photographic exposure meter (22,989)
01/1991
01/08/1991CA1278700C Method of spectrographically measuring density of photographic negative color film
01/04/1991WO1991000502A1 Avalanche photodiode quenching circuit
01/02/1991EP0406053A1 Infrared detector comprising pyroelectric materials
01/02/1991EP0405866A2 Operating temperature hybridizing for focal plane arrays
01/02/1991EP0405801A2 Optical amplifier-photodetector assemblage
01/02/1991EP0405800A2 Laser-photodetector assemblage
01/02/1991CN1048264A Method for measuring accumulated quantity of light by use of pulse count and its apparatus
01/01/1991US4982080 Radiation detecting array including unit cells with periodic output signals each within a unique frequency band
01/01/1991US4981362 Particle concentration measuring method and device
12/1990
12/29/1990CA2017742A1 Operating temperature hybridizing for focal plane arrays
12/27/1990WO1990016082A1 Radiation detector array using radiation sensitive bridges
12/27/1990WO1990015952A1 Vacuum separator for dewar flask cold exchange systems
12/27/1990EP0403880A2 Radiation shield for thermoelectrically cooled infrared detectors
12/27/1990EP0403630A1 Infrared thermometer with fiber optic remote pickup and method
12/25/1990US4980545 Photometric circuit
12/25/1990US4979821 Cuvette for receiving liquid sample
12/20/1990DE3921951A1 Dosage warning device for solar irradiation of human body - has solar radiation sensor signal integrator triggering acoustic sampler after defined integration interval
12/20/1990DE3919572A1 Laser beam intensity profile measuring arrangement - using detector in focussed beam, low transmission focussing lens and deflection mirror for high powder beams
12/20/1990DE3919571A1 Laser beam intensity profile measuring arrangement - has attenuator with IR transmitting substrate and low transmissivity coating regions in front of detector array
12/19/1990EP0402633A1 Device for measuring aerosols and airborne dust
12/19/1990EP0248823B1 Optical sensing system
12/18/1990US4979123 Apparatus for determining concentrations of mineral elements
12/16/1990WO1990015972A1 Colour monitoring
12/16/1990CA2058432A1 Colour monitoring
12/14/1990CA2016243A1 Vacuum separator for dewar flask cold exchange systems
12/13/1990WO1990015432A1 Input screen for radiological image intensifier tube
12/11/1990US4977312 Photometric apparatus employing solid-state imaging device
12/11/1990CA1277505C Fluctuation analysis for enhanced particle detection
12/05/1990EP0400909A2 Processing circuit for optical combustion monitor
12/04/1990US4975778 Image pick-up apparatus including voltage controlled automatic iris control
12/04/1990US4975776 Image pickup apparatus having a photoconductive section
12/04/1990US4975584 Method and apparatus for collecting, processing and displaying ultraviolet radiation data
12/04/1990US4974928 Integral fiber optic printhead
12/04/1990CA1277390C Composite type light sensor
11/1990
11/30/1990CA2017031A1 Apparatus for the measurement of aerosols and dust or the like distributed in air
11/28/1990EP0399562A2 Pattern area ratio measuring apparatus
11/28/1990EP0399180A2 Method and apparatus for search and tracking of targets
11/27/1990US4973843 Pyroelectric infrared sensor
11/27/1990CA1277005C Smoke detection apparatus
11/27/1990CA1276808C Performance improvement for camera autofocus
11/22/1990DE3915692A1 Fluorescence process measuring method - using switched laser, fluorescent light detection system with variable gain
11/20/1990US4972245 Infrared detecting element
11/20/1990US4972085 Cold shielding of infrared detectors
11/15/1990DE3915421A1 Periodic, alternating monochromatisation of polychromatic light beam - is used esp. for top illumination microscopy, and has dichroitical colour dividers, chopper and interference filters
11/14/1990EP0397306A1 Fuel ignition sensor
11/14/1990EP0397251A2 Methods of producing vacuum devices and infrared detectors with a getter
11/14/1990EP0396966A1 Portable radiometric data acquisition system
11/14/1990CN2065755U Attachment of photometric receiver
11/14/1990CN1046984A Beam splitter system of brightness meter/colorimeter
11/13/1990US4969740 Spectrometer
11/08/1990CA2014654A1 Portable radiometric data acquisition system
11/07/1990EP0395932A2 Photoelectric apparatus for determining losses in flexible pipe filters
11/07/1990CN2065319U Point-wise and surface-wise photometric exposure meter for colour photograph-enlarging darkroom
11/06/1990US4969113 Method and apparatus for measuring sensor output
11/06/1990US4969005 Backlighting detecting device
11/01/1990WO1990012999A1 Apparatus for measuring the mode quality of a laser beam
10/1990
10/31/1990EP0394932A2 Photothermal inspection method, arrangement for its working out, and utilisation of the method
10/31/1990CN2064883U Relative brightness tester for phosphor
10/30/1990US4967276 Video signal mixing device for infrared/visible integrated imaging
10/30/1990US4967081 Infrared detector
10/30/1990US4967069 Spherical photoelectric sensor
10/30/1990US4966425 Reflecting screen, its manufacturing method and its application to heat-insulation device
10/30/1990CA1275728C Night vision system
10/24/1990EP0393593A2 Method of monitoring cement kiln and the apparatus therefor
10/24/1990EP0393167A1 Apparatus for measuring the illumination
10/24/1990EP0393055A1 Measuring light intensity variations
10/23/1990US4964735 Apparatus for indicating the power and position of a laser beam
10/23/1990US4964725 Correlational gas analyzer
10/17/1990EP0392794A1 Optical signal detector
10/17/1990EP0392442A1 Ultraviolet ray measuring apparatus
10/17/1990CN2063809U Miniature vision protector for students
10/16/1990US4963744 Method and apparatus for providing accurate low noise demodulation
10/16/1990US4963727 Active quenching circuit for avalanche photodiodes
10/16/1990US4963023 Correlational gas analyzer
10/16/1990US4962910 Device for use to prevent human skin from excessive sunburns
10/12/1990CA2014344A1 Ultraviolet ray measuring apparatus
10/10/1990EP0391882A2 Integral fiber optic sensing head
10/10/1990EP0391256A2 Device and method for ascertaining the particle size distribution and particle total concentration in a gas, especially in air
10/10/1990EP0390801A1 A reprographic camera system.
10/10/1990CN2063631U Hollow cathode lamp for visible ultraviolet molecular absorption spectrum
10/09/1990US4962425 Photometric device
10/09/1990US4962316 Frequency domain integrating resonant superconducting transmission line detector
10/09/1990US4962311 Device for determining the direction of incident laser radiation
10/09/1990US4961643 Method of and apparatus for measuring speed
10/04/1990WO1990011647A1 Electrical quenching circuit
10/04/1990WO1990011509A1 Automated process monitoring
10/04/1990WO1990011508A1 Particulate detecting and optical coupling arrangements
10/03/1990CA2009842A1 Integral fiber optic sensing head
10/02/1990US4961207 Synchronization of digital signals with alternating current
09/1990
09/26/1990EP0388603A1 Method and apparatus for covertly viewing a target using infrared radiation
09/25/1990US4959541 Method for determining aperture shape
09/25/1990US4959244 Vapor deposition
09/25/1990US4958928 Photodiode array spectrometer
09/20/1990WO1990010921A1 A method for detecting external influence on an optical cable
09/20/1990WO1990010858A1 Single particle detector using light scattering techniques
09/19/1990EP0388082A2 Infrared spectrometer
09/19/1990EP0387630A2 A compact semi-programmable device for reading reagent test strips and method relating thereto
09/19/1990EP0387291A1 Apparatus and method for use in pulse oximeters
09/18/1990US4958231 Electro-optical streak camera
09/18/1990US4958076 Selective natural gas detecting apparatus
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