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 3 - Spectrometry; Spectrophotometry; Monochromators; Measuring colours
Patents for G01J 3 - Spectrometry; Spectrophotometry; Monochromators; Measuring colours (33,177)
11/1990
11/22/1990EP0398772A1 Control device for vibraton free moving of an optical element of a stellar interferometer and stellar interferometer incorporating the same
11/22/1990EP0214172B1 Method and apparatus enabling to countertype a tint from a collection of base tints
11/21/1990CN1047144A Rotary lens rapid spectrum displayer
11/20/1990WO1990014581A1 Apparatus for emitting and receiving light
11/20/1990US4972331 Phase modulated spectrophotometry
11/20/1990US4971447 Method for measuring concentration of chemical substances
11/20/1990US4971439 Wavelength calibration method and apparatus
11/20/1990US4971437 Optical spectral analysis system and method
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
11/14/1990EP0397469A2 Background correction method for use in gas chromatography
11/14/1990EP0397467A1 Photodetector
11/14/1990EP0242375B1 Process for manufacturing systematic color tables or color chartsfor seven-color printing, and tables or charts produced by this process
11/14/1990CN2065755U Attachment of photometric receiver
11/13/1990US4969740 Spectrometer
11/13/1990US4969739 Spectrometer with direct drive high speed oscillating grating
11/09/1990CA2016274A1 Photodiode configurations for simultaneous background correction and specific wavelength detection
11/09/1990CA2016272A1 Background correction method for use in gas chromatography
11/07/1990EP0396507A1 Monochromator
11/07/1990EP0396320A2 A method and apparatus for remotely and portably measuring a gas of interest
11/07/1990EP0396319A1 An improved method and arrangement for measuring the optical absorptions of gaseous mixtures
11/06/1990US4968143 Portable spectrophotometer
11/06/1990US4968140 Manual device for the determination or measurement of photometric data using a measuring head
11/06/1990US4968122 Galvanometer gimbal mount
10/1990
10/31/1990EP0394266A1 Optical spectral analyzer
10/30/1990US4966461 Color identification system
10/30/1990US4966458 Optical system for a multidetector array spectrograph
10/30/1990US4966456 Spectral analyzer and direction indicator and aircraft landing system application
10/30/1990CA1275580C2 System for measuring the color of a material
10/25/1990DE3546681C2 Immunological reaction measurement - by scanned valves of scattered light from cell passed to FFT for average density spectrum
10/24/1990EP0217819B1 A method and a spectrometer for measuring absorbance difference spectra of radical reactions
10/23/1990US4965663 Method for measuring of chromatic optical density
10/23/1990US4965449 Color information detecting device
10/23/1990US4964725 Correlational gas analyzer
10/22/1990WO1990013008A1 Transient spectroscopic method and apparatus for in-process analysis of molten metal
10/18/1990WO1990012294A1 Spatial heterodyne spectrometer and method
10/17/1990EP0392337A2 Method for determining the concentration ratio of two elements in a substance from the intensity ratio of two spectral lines of these elements in a plasma of the substance
10/16/1990US4963925 Chroma control method
10/16/1990US4963023 Correlational gas analyzer
10/12/1990CA2014366A1 Method of determining the concentration ratio of two elements in a plasma from the intensity ratio of two spectral lines of these elements
10/09/1990US4961646 Manual device for the detection of optical reflection properties
10/04/1990DE3910329A1 Device for measuring the relaxation oscillation frequency of a semiconductor laser
10/03/1990EP0390615A2 Opto-electronic measuring device
10/02/1990US4961207 Synchronization of digital signals with alternating current
09/1990
09/26/1990EP0389115A1 Mirror alignment and damping device
09/26/1990EP0388658A1 Color balanced image detector system
09/25/1990US4959244 Vapor deposition
09/25/1990US4958928 Photodiode array spectrometer
09/19/1990EP0388082A2 Infrared spectrometer
09/19/1990EP0387261A1 Raman spectrometer having hadamard electrooptical mask and diode detector
09/18/1990US4957371 Wedge-filter spectrometer
09/18/1990US4957366 Fluorescence spectrophotometer and wavelength setting method therefor
09/16/1990CA2012148A1 Infrared spectrometer
09/14/1990WO1990010851A1 A method for distinguishing overlapping absorption bands of an infrared spectrum from one another
09/14/1990CA2050313A1 Method for distinguishing overlapping absorption bands of an infrared spectrum from one another
09/11/1990US4955290 Electronic multimachine operating system for remotely controlling printing machines
09/11/1990CA1273820A1 Color measuring and control device
09/11/1990CA1273819A1 Method and apparatus for double modulation spectroscopy
09/11/1990CA1273815A1 Method of observing bore holes, and apparatus therefor
09/07/1990WO1990010202A1 Plane field stigmatic polychromator
09/07/1990WO1990010191A1 Polarization interferometer
09/05/1990EP0385805A2 Signal processing method and apparatus
09/05/1990EP0385454A2 Improvement to the manufacturing of bidimensional linear IR detectors and related manufacturing process
09/05/1990EP0385262A2 Observation apparatus with reflecting object illumination appliance
09/05/1990CN1009490B Improved automatic acousto-optic infra-red analyzer system for monitoring stack emissions
09/04/1990US4954972 Color signature sensor
09/04/1990US4954718 Circuit arrangement for driving a pulse-modulated infrared-radiation source
09/04/1990US4953976 Gas species monitor system
08/1990
08/29/1990EP0384117A2 Simplified multi-cavity tunable optical filter using voltage-dependent refractive index
08/29/1990EP0384116A2 Multiple-cavity optical filter using change of cavity length
08/29/1990EP0383829A1 Infrared emission detection
08/29/1990CN1044986A 分光光度计 Spectrophotometer
08/23/1990WO1990009637A1 Method and means for parallel frequency acquisition in frequency domain fluorometry
08/23/1990WO1990009575A1 Picosecond multi-harmonic fourier fluorometer
08/23/1990WO1990009569A1 Colour system calibration sheet, vignettes and transitions
08/23/1990DE3904980A1 Device for determining process data for the colouring of hair
08/22/1990EP0383209A1 Automated strip reader densitometer
08/22/1990EP0383138A2 Device for the direct optical reception of a plurality of wave lengths
08/22/1990EP0382908A2 Ir-spectrometric analysing procedure and means
08/21/1990US4951106 Detector device for measuring the intensity of electromagnetic radiation
08/21/1990US4951097 Method and apparatus for bone histomorphometry
08/21/1990US4950077 Photoelectric measuring apparatus for use in automatic analyzer
08/16/1990EP0382343A2 UV-visible monochronometer order subtraction technique
08/16/1990EP0381883A1 Optical examination apparatus
08/16/1990EP0262140B1 Method and apparatus for determining parameters of gaseous substances
08/16/1990CA2004771A1 Ir-spectrometric analysing procedure and means
08/15/1990CN2060544U Standard certificate container
08/14/1990US4948256 Optical fiber type colorimeter
08/14/1990US4948250 Atomic absorption spectrophotometer
08/14/1990CA1272616A1 Spectrophotometer
08/10/1990CA2007849A1 Picosecond multi-harmonic fourier fluorometer
08/09/1990WO1990009032A1 Deuterium lamp for spectral analysis devices
08/09/1990WO1990009003A1 Phase modulated spectrophotometry
08/09/1990WO1990008969A1 Optical colour-splitter arrangement
08/08/1990EP0381341A2 FSK optical communication system
08/08/1990EP0381053A1 Method of operating a spectrophotometer
08/08/1990EP0243375B1 Process and device for measuring concentration
08/07/1990US4947348 Densitometer method and system for identifying and analyzing printed targets
08/07/1990US4946279 Flourescence spectrophotometer for measuring fluorescent light of a plurality of wavelength conditions
08/02/1990DE3901825A1 Optical gas analysis device having an electro-optically modulatable notch filter
08/01/1990EP0379671A2 Noise reduction for photodiode arrays
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