Patents for G01J 1 - Photometry, e.g. photographic exposure meter (22,989)
01/1993
01/26/1993US5181654 Sunshine sensor and air conditioner for vehicle
01/26/1993US5181386 Cryogenic cooling apparatus
01/20/1993EP0523783A1 An image detector with wavelength shifter
01/20/1993EP0523716A1 Infrared sensor and method for production thereof
01/19/1993US5180908 Device for deriving a change of time-dependent information by converting the information to positional-dependent information
01/19/1993US5180907 Method and apparatus for the measurement of rapid light variation superimposed on a slowly changing background light intensity
01/13/1993EP0522614A1 Method of determining an electrical spectrum
01/12/1993US5179423 Gain stabilized self-scanning photo-diode array
01/12/1993US5179422 Contamination detection system
01/12/1993US5179288 Apparatus and method for measuring a bodily constituent
01/12/1993US5178990 Method of identifying output, main wavelength, etc., of light
01/07/1993WO1993000045A1 Imaging a physical parameter using diffuse waves
01/07/1993EP0521255A2 Photo detector arrangement
01/05/1993US5177686 Method for determining the position of a space vehicle by means of star acquisition and star identification
01/05/1993US5177557 Method for inspecting axis dislocation of multifiber connector
01/05/1993US5177364 Infrared detector construction including a getter and method for manufacturing same
12/1992
12/30/1992EP0520973A1 Method and apparatus for measuring the luminance
12/30/1992EP0519930A1 Measurement of luminescence
12/23/1992EP0519239A2 Photoelectric switch sealed against infiltration of contaminants
12/23/1992EP0519105A1 Photodiode array
12/23/1992EP0519007A1 Multisensor high-resolution camera
12/22/1992US5173750 Reflection densitometer
12/22/1992US5173749 Method and apparatus for spectroscopic measurement of the concentration of a gas
12/17/1992DE4119627A1 Measuring intensity of UV light emitted from source - using gas=filled photocell operated with pulsed voltage in self-sustaining glow discharge region and determining ratio of mean discharge pulse duration to trigger pulse duration
12/16/1992EP0518780A2 Process and device for monitoring the operation of a laser beam optical chain carried by a welding tool
12/16/1992EP0518733A1 Method and scanning device for an optoelectronic wide angle imaging apparatus with high resolution
12/16/1992EP0518515A1 Rapid cooldown dewar
12/16/1992EP0518026A1 Infrared radiation detector including a cooling device
12/16/1992EP0356517B1 Pyroelectric infrared sensor
12/15/1992US5172392 Apparatus for the analysis in continuous mode and in impulse mode of the distribution of energy within a power laser beam and the alignment of this latter
12/15/1992US5172003 Reflex type optical sheet sensor having a dustproof plate with a roughed surface
12/15/1992US5172002 Optical position sensor for scanning probe microscopes
12/15/1992CA1311367C Optical analysis method and apparatus having programmable rapid random wavelength access
12/10/1992DE4216085A1 IR gas analyser for continuously measuring multiple atom, non-elementary gas - uses alternating IR beam, absorption cuvette, interference filter, radiation receiver and evaluation circuit
12/09/1992EP0517187A2 Wideband optical amplifier-receiver system
12/09/1992EP0516821A1 Split v-roof mirror collector.
12/08/1992US5170221 Parallel light ray measuring apparatus
12/08/1992US5170035 Sensor circuit for controlling flow in an instrument loop
12/08/1992US5169234 Infrared temperature sensor
12/08/1992CA2070317A1 Wideband optical amplifier-receiver system
12/02/1992EP0515689A1 Device for sensing in-focus position
12/01/1992US5168154 Electrical avalanche photodiode quenching circuit
11/1992
11/26/1992WO1992021010A1 Method of optical sampling
11/26/1992WO1992020505A1 Method of and apparatus for making a three-dimensional object by stereolithography
11/24/1992US5166755 Spectrometer apparatus
11/24/1992US5166504 Apparatus for controlling high-power laser beams with flexible member and mirror
11/24/1992CA1310506C Electromagnetic radiation detecting device
11/24/1992CA1310505C Avalanche photodiode quenching circuit
11/19/1992EP0513903A1 Pyroelectric ceramic materials and their use
11/18/1992CN1066329A Thermoelectric detecting device and the mfg. method
11/17/1992US5163332 For transmitting radiation
11/17/1992CA1310367C Electrochemically controlled superconductivity
11/12/1992WO1992019930A1 Method and apparatus for optical imaging and measurement
11/11/1992WO1992021137A1 Method and system for photodetector signal correction
11/10/1992US5162874 Electrophotographic machine having a method and apparatus for measuring toner density by using diffuse electromagnetic energy
11/05/1992DE4114592A1 Photodetector arrangement with current=carrying detector element in bridge - uses frequency modulation of bridge operating voltage and corresp. frequency selective evaluation of diagonal voltage
11/05/1992DE4114489A1 Photodetector arrangement with current carrying element - uses frequency selective evaluation of detector voltage with modulation of detector current
11/04/1992EP0511896A1 Method of forming high resolution infrared images and thermal camera with unidirectional scanning therefor
11/04/1992EP0511806A2 Spectrophotometric apparatus
11/04/1992EP0511346A1 Alignment control device and uses thereof.
11/04/1992CN1065930A Weak -light instrument
10/1992
10/28/1992EP0511122A1 Optical transducer suitable to provide information representative of the state of a surface
10/28/1992EP0510920A2 Thermal photodetector and method of manufacturing the same
10/28/1992EP0510856A2 Improvements in or relating to optical gas detectors
10/28/1992EP0510408A2 Photodetector arrangement
10/27/1992US5159455 Multisensor high-resolution camera
10/27/1992US5159410 Method for in-situ determination of the fermi level in GaAs and similar materials by photoreflectance
10/27/1992US5159409 Substrate machining verifier
10/27/1992US5159400 Apparatus for testing optical fiber by using detector having virtually broadened dynamic range
10/27/1992US5159185 Precise color analysis apparatus using color standard
10/27/1992CA2066816A1 Optical gas detectors
10/21/1992CN2119647U Precise digit lightmeter
10/15/1992WO1992017754A1 System for monitoring arc sensor protecting window
10/14/1992EP0508970A1 Detector for infrared radiation
10/14/1992EP0508182A2 Method and apparatus for measuring the optical absorbance of samples with automatic baseline correction
10/14/1992EP0507805A1 Optical time domain relfectometer.
10/13/1992US5155354 Object detection apparatus
10/13/1992US5155093 Generating current by inputting a light signals to signal input protion, causing change in electrical characteristics, detecting changes to detect light signals
10/07/1992EP0507526A2 Radiometer with correction device
10/07/1992EP0506828A1 Apparatus and method for use in determining the optical transmission factor or density of a translucent element
10/07/1992CN1018582B Optical-path arrangement for fluorescence testing and relevant equipment
10/07/1992CN1018580B Pyroelectric infra-red detectors and their method of mfr.
10/06/1992US5153926 Parallel processing network that corrects for light scattering in image scanners
10/06/1992US5153667 Apparatus for detecting the change of light intensity
10/06/1992US5153631 Photometric device for a camera
10/06/1992US5153429 Solar radiation sensor housing with slanted photodetector and knurled filter
10/06/1992US5153426 Radiation meter for radiation emerging from an optical fiber with a diffusely reflecting body and cavity
10/06/1992US5153424 Flux monitor high light intensity cut-off circit for night vision devices
10/06/1992US5153423 Circuit arrangement for reading out sensors sensitive to light or x-rays
10/01/1992WO1992016820A1 Liquid crystal lens driver electronics for eye protection and high speed shuttering
10/01/1992DE4110574A1 Measuring light intensity distribution of light or lamp - using light measurement device on closed surface about lamp, measuring light intensity at defined camera positions, weighting and summing values in each direction
09/1992
09/30/1992CN2117598U Portable qigong air checking apparatus
09/30/1992CN2117597U Photometer for reading and writing
09/30/1992CN1064937A Infrared band laser detecting board for organic double-frequency material
09/29/1992US5151586 Scanning exposure device provided with intensity correction to compensate for scan angle
09/29/1992US5151380 Method of making top buss virtual phase frame interline transfer CCD image sensor
09/23/1992EP0505185A1 Optical sensor and method for producing the same
09/23/1992EP0505131A1 Method for establishing an electrical field at a surface of a semiconductor device
09/23/1992EP0505079A1 Auto-ranging film densitometer
09/23/1992EP0504282A1 Infrared medical thermometer.