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)
05/1991
05/29/1991EP0428924A2 Frequency detector for discriminating multi-longitudinal mode laser operation
05/29/1991EP0428744A1 Wavelength detector
05/28/1991US5020018 Outer product optical interferometer with hologram
05/22/1991EP0427797A1 Polarization interferometer.
05/21/1991US5017006 Laser warning sensor
05/08/1991EP0426104A2 Laser wavelength measuring device
05/07/1991US5013152 Interchangeable interferometric optical mounting elements
05/01/1991CA2028706A1 Laser wavelength measuring device
04/1991
04/30/1991US5012440 Outer product optical interferometer with mask
04/30/1991US5012212 Open resonator for electromagnetic waves having a polarized coupling region
04/30/1991CA1283694C Reducing fluctuations in a radiation beam characteristic
04/23/1991US5009500 Remote method of measuring subsurface water temperatures
04/18/1991WO1991005239A1 Light receiving system of heterodyne detection and image forming device for light transmission image using said light receiving system
04/17/1991EP0422183A1 Spatial heterodyne spectrometer and method
04/16/1991US5008696 Phase difference detecting apparatus
04/16/1991US5007717 Real time analyzer for pulsed laser systems
04/04/1991DE3931543A1 Polarimeter arrangement for measuring polarisation plane rotation - has half wave delay plate with electrical rotation of main optical axis
04/03/1991EP0420742A1 Photoreceptor for frequency-modulated optical signals
04/03/1991EP0419936A1 Process and apparatus for the phase indication of radiation, especially light radiation
04/02/1991US5004914 Fiber-optic interferometric chemical sensor
03/1991
03/21/1991DE3929845A1 Optical radiation wavelength determining equipment - has detectors having different spectral sensitivities and computer determining incident light wavelength
03/14/1991DE3929340A1 Integrated optical gas refractive index sensor - with lithium niobate crystal with proton exchanged niobate and gas sensitive layer on waveguide on cut axis
03/06/1991EP0415143A2 Interferometric measuring system
03/06/1991EP0414889A1 Single beam ac interferometer
03/05/1991US4997273 Remote method of measuring subsurface water temperatures
03/01/1991CA2023469A1 Passive quadrature phase detection system for coherent fiber optic systems
02/1991
02/26/1991US4996416 Optical detection system with means for equalizing ambient light levels at multiple detectors
02/26/1991US4995726 Surface profile measuring device utilizing optical heterodyne interference
02/26/1991CA1280818C Single-photodiode optical heterodyne mixers
02/12/1991US4991963 Wavelength-independent interferometer for optical signal processing
02/05/1991US4990762 Laser beam phase measurement and control system
01/1991
01/30/1991EP0410057A1 Wavelength meter
01/16/1991EP0407454A1 Optical measuring apparatus.
01/15/1991WO1991001579A1 Narrow-band oscillation excimer laser and wavelength detector
01/15/1991CA2063600A1 Narrow band excimer laser and wavelength detecting apparatus
01/08/1991US4984298 Communications system
01/08/1991US4983039 Spectrometer
01/08/1991CA1278715C Fiber fabry-perot etalon
01/01/1991US4982082 Frequency detector for discriminating multi-longitudinal mode laser operation
12/1990
12/27/1990EP0403468A1 Integrated optical interference method
12/25/1990US4980554 Laser line identifier
12/25/1990US4979825 Device for measuring optical frequency modulation characteristics
12/19/1990EP0205551B1 Spectral analyzer and direction indicator
12/18/1990CA1278023C Monitoring and controlling radiation source stability
12/12/1990EP0401576A2 Interferometric device
12/11/1990US4976542 Digital array scanned interferometer
11/1990
11/28/1990EP0399004A1 Interferometry.
11/28/1990EP0241512A4 A common optical path interferometric gauge
11/27/1990US4973853 Remote subsurface water temperature measuring apparatus with Brillouin scattering
11/27/1990US4973160 SHG autocorrelator
11/24/1990WO1990014582A1 Wavelength detector
11/24/1990CA2033194A1 Wavelength detecting apparatus
11/20/1990US4972331 Phase modulated spectrophotometry
11/14/1990EP0246318B1 Amplitude-weighting adaptive laser
11/13/1990US4969742 Integrated optic wavemeter
11/08/1990DE3914666A1 Measuring optical loss of laser optical element(s) - introduced into light path from source with changes in Fabry-Perot resonator evaluated
11/06/1990US4969017 Measuring device for the measurement, in a wide range, of a non-reciprocal phase shift generated in a ring interferometer, and measuring method
11/06/1990US4968144 Single beam AC interferometer
11/01/1990WO1990012999A1 Apparatus for measuring the mode quality of a laser beam
10/1990
10/30/1990US4967080 Apparatus for measuring the temporal correlation of fundamental particles
10/30/1990US4967063 Charge controlled adaptive-optics system
10/30/1990US4966456 Spectral analyzer and direction indicator and aircraft landing system application
10/18/1990WO1990012294A1 Spatial heterodyne spectrometer and method
10/11/1990DE3911471A1 Heterodyne method for refractometric measurement and stabilisation of wavelength
10/09/1990US4962319 Remote subsurface water temperature measuring apparatus with Brillouin scattering
09/1990
09/26/1990EP0301048B1 Improvements relating to optical interferometers
09/25/1990US4958931 System utilizing an achromatic null lens for correcting aberrations in a spherical wavefront
09/25/1990US4958921 Light-driven phase shifter
09/20/1990WO1990010842A1 Single beam ac interferometer
09/07/1990WO1990010191A1 Polarization interferometer
09/04/1990US4955026 Frequency locking radiation beam
09/04/1990US4953981 Lateral-shearing electro-optic field sensor
08/1990
08/23/1990WO1990009718A1 Electromagnetic imager device
08/22/1990EP0383390A1 Optical coherent receiver
08/21/1990US4951287 Atomic vapor laser isotope separation process
08/21/1990US4950878 Wavefront control system using optical coarse/fine gradient sensor
08/21/1990US4950074 Method of determining the refractive index of a substance and apparatus thereof
08/17/1990CA2010015A1 Optical coherent receiver
08/16/1990EP0223855B1 Interference polarization refractometer
08/14/1990US4947891 Fuel control device, fuel control system using the device and method of making the device
08/09/1990WO1990009003A1 Phase modulated spectrophotometry
08/08/1990EP0381341A2 FSK optical communication system
08/07/1990US4946280 Wavefront analysis for segmented mirror control
07/1990
07/26/1990WO1990008305A1 Process and arrangement for measuring the line width of laser diodes
07/24/1990US4943709 Liquid crystal adaptive optics system
07/18/1990EP0377571A1 Imaging process and system for transillumination with photon frequency marking.
07/17/1990US4942581 Optical phase detection and control system
07/11/1990EP0222885B1 Spectral analyzer and direction indicator and aircraft landing system application
07/10/1990US4940331 Heterodyne laser instantaneous frequency measurement system
07/04/1990EP0376449A1 Interferometer
07/03/1990USH798 Phase shifting apparatus and method for shearing inferferometry
06/1990
06/19/1990US4935614 Real-time wavefront sensor for coherent wavefront characterization
06/19/1990US4934819 Apparatus for measuring transverse moment of an electromagnetic field associated with an optical beam
06/13/1990DE3920840C1 Integrated optical sensor detecting temp. and refraction index changes - has double refractive waveguide in substrate extending along X or Y axis of cut lithium-niobate crystal
06/12/1990US4933872 Method and system for wavefront reconstruction
05/1990
05/31/1990DE3839537A1 Method for measuring the rate of a radiation and arrangement for carrying out this method
05/29/1990US4929080 Apparatus for the optical measurement of spectra distribution
05/29/1990US4928527 Method and device for nondestructive evaluation
05/17/1990WO1990005282A1 Interferometer
05/15/1990US4926428 Method and apparatus for sensing the wavelength of a laser beam
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