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 9 - Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
Patents for G01J 9 - Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength (4,525)
05/1985
05/02/1985EP0138998A1 Mirror scan velocity control
04/1985
04/30/1985US4514054 Quadrature fiber-optic interferometer matrix
03/1985
03/27/1985EP0135003A2 Apparatus for detecting the presence of coherent radiation in the presence of non-coherent ambient radiation
03/20/1985EP0134487A2 Coherent radiation detecting apparatus
03/19/1985US4506388 Process and apparatus for the coherent detection and demodulation of a phase-modulated carrier wave in a random polarization state
03/19/1985US4505588 Fiber stellar interferometer
03/12/1985US4504147 Angular alignment sensor
03/05/1985CA1183365A1 Method of and apparatus for determining the refractive index profile of optical fibres and optical fibre preforms
02/1985
02/20/1985EP0133356A2 Optical image processor
01/1985
01/23/1985EP0033335B1 Refractively scanned interferometer
01/17/1985WO1985000221A1 Quadature fiber-optic interferometer matrix
01/16/1985EP0131183A2 Method and devices for detecting spectral features
01/09/1985EP0130337A2 Optical measurement apparatus
01/01/1985US4491867 Device for the heterodyne detection of an optical image
12/1984
12/25/1984US4490039 Wave front sensor
11/1984
11/06/1984US4481517 Echometry device and method
10/1984
10/02/1984US4474467 Wavefront sensor using a surface acoustic wave diffraction grating
09/1984
09/18/1984US4472029 Integrated wavefront compensator
09/13/1984WO1984003558A1 Mirror scan velocity control
09/11/1984US4471448 Method and apparatus for aligning an optical system
09/11/1984CA1174075A1 Laser radiometer
08/1984
08/21/1984US4467186 Mirror actuator control system
08/08/1984EP0115445A2 Optical heterodyne detection pulse receiving system and method
07/1984
07/03/1984CA1170075A1 Method and apparatus for the interferometric wavelength measurement of frequency tunable c w lasers
06/1984
06/26/1984US4456339 Laser heterodyne surface profiler
06/12/1984US4453827 Optical distortion analyzer system
05/1984
05/29/1984US4451923 Method of and apparatus for measuring optical frequency variations
05/22/1984US4449825 Optical measuring apparatus employing a laser
05/22/1984US4449823 Device for measurement of the spectral width of nearly monochromatic sources of radiant energy
05/16/1984EP0108497A1 Irradiative probe system
04/1984
04/04/1984EP0104932A2 Polarization-maintaining fiber system and method of manufacturing the same
04/03/1984US4441019 Wavefront sensor with astigmatic optics
03/1984
03/20/1984US4438330 Wavefront sensor employing a modulation reticle
03/13/1984US4436425 Signal waveform detector using synthetic FM demodulation
01/1984
01/17/1984US4426155 Method and apparatus for the interferometric wavelength measurement of frequency tunable C.W. lasers
12/1983
12/13/1983US4420260 Interferometer transmitting the useful phase information through optical fibres
11/1983
11/29/1983US4417822 Laser radiometer
11/29/1983US4417815 Measuring apparatus
11/29/1983US4417813 Non-scanned heterodyne imaging sensor
11/23/1983EP0094709A2 Laser device and interferometer comprising such a laser device
11/08/1983US4413909 Wavefront tilt measuring apparatus
10/1983
10/27/1983WO1983003685A1 Sensor using fiber optic interferometer
10/26/1983EP0092369A2 Light frequency change detecting method and apparatus
10/26/1983EP0092367A2 Sensor using fiber interferometer
10/18/1983US4410236 Optical directional coupler and method of manufacture
09/1983
09/20/1983US4405232 Wave front sensing device
08/1983
08/17/1983EP0086170A1 Method for analyzing particle size distribution of global samples with use of interferences, especially for polydispersed biological particles
08/17/1983EP0085981A1 Method of and apparatus for determining the refractive-index profile of optical fibres and optical-fibre preforms
08/17/1983EP0085978A2 Method of and apparatus for measuring the thickness and the refractive index of transparent materials
08/16/1983US4399356 Optical wavefront sensing system
08/10/1983EP0085174A2 Apparatus for the recognition of distant electromagnetic radiation emitting objects
06/1983
06/22/1983EP0082050A1 Device for the heterodyne detection of an optical image
06/14/1983US4387966 Wide bandwidth optical modal deformation sensor
06/01/1983EP0079981A1 Phase balancing of an optical wave front
05/1983
05/18/1983EP0079276A1 Method and device for the measurement of the wave surface deformations introduced by an optical system
05/18/1983EP0079268A1 Michelson-type interferometer with a photo-refractive mirror
05/17/1983US4383762 Two-beam interferometer for Fourier spectroscopy with rigid pendulum
04/1983
04/12/1983US4379633 Apparatus for maintaining adjustment of coincidence and relative phase relationship of light beams in an interferometer
11/1982
11/17/1982EP0064789A2 Interferometer transmitting the useful phase information through optical fibres
10/1982
10/12/1982US4353650 Laser heterodyne surface profiler
09/1982
09/01/1982EP0058801A1 Measuring apparatus using optical interference techniques
08/1982
08/31/1982US4346999 Digital heterodyne wavefront analyzer
08/17/1982US4344707 Modal sensor
08/17/1982CA1129692A2 Holographic diffraction grating system for rapid scan spectral analysis
08/11/1982EP0057568A2 A laser radiometer
07/1982
07/20/1982US4340304 Interferometric method and system
05/1982
05/25/1982CA1124100A1 Optical measuring apparatus employing a laser
05/11/1982US4329055 Interferometer apparatus for measuring the wavelengths of optical radiation
04/1982
04/27/1982US4326800 Laser beam wavefront and line-of-sight error correction system
03/1982
03/16/1982US4319843 Interferometer apparatus for the direct measurement of wavelength and frequency
01/1982
01/05/1982US4309604 Apparatus for sensing the wavelength and intensity of light
01/05/1982US4309602 Wavefront sensing by phase retrieval
01/05/1982US4309108 Analyzer for coherent radiation
12/1981
12/29/1981US4308456 Method and apparatus for measuring the frequency of radiation
12/15/1981US4305666 Optical heterodyne detection system and method
12/08/1981US4304464 Background compensating interferometer
11/1981
11/25/1981EP0033335A4 Refractively scanned interferometer.
08/1981
08/26/1981EP0034325A1 Two-beam interferometer for Fourier spectroscopy
08/12/1981EP0033335A1 Refractively scanned interferometer.
06/1981
06/16/1981US4273446 Light spot position sensor for a wavefront sampling system
06/09/1981US4272195 Method and apparatus for determining the wavelength of light
06/09/1981US4272193 Method and apparatus for timing of laser beams in a multiple laser beam fusion system
05/1981
05/28/1981WO1981001466A1 A method and apparatus for measuring the frequency of radiation
05/05/1981US4265539 Device which measures the mutual coherence function of a laser beam
03/1981
03/31/1981US4259016 Interferometer with a single-mode waveguide coil
03/17/1981US4256958 Apparatus for monitoring the optical quality of a beam of radiation
02/1981
02/05/1981WO1981000299A1 Refractively scanned interferometer
01/1981
01/13/1981US4245156 Apparatus for monitoring the optical quality of a beam radiation
01/06/1981US4243323 Interferometer
12/1980
12/16/1980US4239392 Grating output wavefront sampling system
10/1980
10/14/1980US4227807 Holographic angle sensor
09/1980
09/16/1980US4222667 Fizeau fringe light evaluator and method
07/1980
07/22/1980US4213706 Background compensating interferometer
07/22/1980US4213697 Phase measuring device
07/01/1980US4210400 Non-segmented phase gradient detector for coat system
03/1980
03/04/1980US4191473 Method of and apparatus for measuring the absolute wavelength of a source of unknown frequency radiation
02/1980
02/12/1980US4188122 Interferometer
01/1980
01/15/1980US4183671 Interferometer for the measurement of plasma density
11/1979
11/06/1979US4173442 Apparatus and method for determination of wavelength
10/1979
10/30/1979US4172663 Optical wavelength meter
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