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)
12/1998
12/15/1998US5850292 Wavelength monitor for optical signals
12/09/1998EP0882219A2 High spectral resolution fiber optic spectrometer
12/03/1998WO1998054542A1 Interferometric measuring device
12/03/1998DE19722342A1 Method for absolute test of spherical surfaces
12/03/1998DE19721883A1 Interferometric measuring device for measuring shape of object surface
11/1998
11/25/1998EP0722640B1 Cryptographic receiver
11/24/1998US5841536 Polarization interferometer apparatus using the polarization dependent phase lag in a birefringent retarder
11/24/1998US5841125 High energy laser focal sensor (HELFS)
11/19/1998WO1998052021A1 Grating based phase control optical delay line
11/17/1998US5838485 Superheterodyne interferometer and method for compensating the refractive index of air using electronic frequency multiplication
11/17/1998US5838441 Wide field of view coherent light detector and locator
11/17/1998US5838437 For measuring wavelengths of radiation from an optical device
11/11/1998EP0876625A1 Radiation field analyzer
11/11/1998EP0876595A1 Low-coherence interferometric device
11/11/1998EP0876582A1 Sensing method and apparatus
11/10/1998US5835642 Optical fiber interferometer and piezoelectric modulator
11/10/1998US5835217 Phase-shifting point diffraction interferometer
11/04/1998EP0875744A2 Method and apparatus for inspecting a test piece by optical metrology
11/04/1998EP0875743A1 A wavemeter and an arrangement for the adjustment of the wavelength of an optical source
10/1998
10/29/1998WO1998027446A3 Temperature compensated fiber bragg gratings
10/29/1998DE19716785A1 Shearing speckle interferometry measuring deformation gradients at free form surfaces
10/22/1998WO1998035493A3 Method and apparatus for alias free measurement of optical transfer function
10/20/1998US5825018 Optical lock-in detection technique for coherent detection applications
10/20/1998US5824567 Methods for wavelength discrimination of monochromatic light beams
10/13/1998US5822049 Optical fiber coupler type wavelength measuring apparatus
10/06/1998US5818858 Device for producing an electric potential having a difference frequency of a self-mixed signal in a laser resonator
10/06/1998US5818629 Method and apparatus for monitoring the momental wavelength of light, and an optical amplifier and an optical communication system which incorporate the method and apparatus to adjust gain tilt
10/01/1998WO1998043054A1 Device and process for extinguishing a source
09/1998
09/30/1998EP0866956A1 Wavefront measuring system with integral geometric reference (igr)
09/29/1998US5815268 Measurement device
09/29/1998US5815266 Sensing method and apparatus
09/08/1998US5805282 Method and apparatus for coherence observation by interference noise
09/03/1998DE19708448A1 Wavefront recording arrangement
09/03/1998DE19708447A1 Twyman-Green interferometer adjustment device
09/01/1998US5801830 Apparatus and associated methods of detecting optical carriers and measuring characteristics thereof
08/1998
08/27/1998DE19707773A1 Interferometric measuring device
08/25/1998US5798878 Shape control apparatus for reflecting mirrors
08/25/1998US5798859 Method and device for wavelength locking
08/20/1998WO1998036252A1 Device for measurement of optical wavelengths
08/20/1998WO1998036237A1 Method for determining an optical, mechanical, electric or other measurement variable
08/20/1998DE19720122A1 Verfahren zur Ermittlung einer optischen, mechanischen, elektrischen oder anderen Meßgröße Method for determining an optical, mechanical, electrical or other measurand
08/13/1998WO1998035493A2 Method and apparatus for alias free measurement of optical transfer function
08/13/1998DE19705119A1 Dynamic range increasing method for measurement through Shack-Hartmann sensor
08/13/1998DE19704602A1 Interferometric device for scanning object
08/12/1998CN1190184A 波长管理器 Wavelength Manager
08/06/1998DE19803100A1 Optical system testing has calibration capable wave front sensor
08/06/1998DE19703741A1 Method for absolute optical measurement of shapes of objects
07/1998
07/29/1998EP0855811A2 Wavelength manager
07/21/1998US5784161 Heterodyne interferometer arrangement with tunable lasers, a heterodyne interferometer, a comparison interferometer and a reference interferometer
07/15/1998EP0852715A1 Integrated optic interferometric sensor
07/14/1998US5781334 Stabilized multi-frequency light source and method of generating synthetic light wavelengths
07/14/1998US5780843 Absolute optical frequency calibrator for a variable frequency optical source
07/07/1998US5777719 Wavefront sensor for determining the wave aberration of the living eye
07/02/1998WO1998027863A1 Apparatus for improving vision and resolution of retinal images
07/01/1998EP0851205A2 Optical interferometer and signal synthesizer using the interferometer
06/1998
06/30/1998US5774221 Apparatus and methods for providing phase controlled evanescent illumination
06/30/1998US5774089 Method to resolve ambiguities in a phase measurement
06/25/1998WO1998027446A2 Temperature compensated fiber bragg gratings
06/23/1998US5771095 Optical test system including interferometer with micromirror and piezoelectric translator for controlling test path mirror
06/18/1998DE19652113A1 Automated phase division evaluation method for interferometer, used, e.g., in CCD array
06/17/1998EP0831312A4 Optical fibre interferometer and optical fibre piezo-electric modulator
06/16/1998US5767972 Method and apparatus for providing data age compensation in an interferometer
06/09/1998US5764362 Superheterodyne method and apparatus for measuring the refractive index of air using multiple-pass interferometry
06/09/1998US5764359 Laser linewidth measuring apparatus utilizing stimulated brillouin scattering
06/04/1998DE19721884C1 Interferometric measuring arrangement for sensing rough surfaces
05/1998
05/28/1998DE19648713A1 Determining diameter of cylindrical bodies or fluids with planar phase Doppler anemometer
05/22/1998WO1998021546A1 Sensing method and apparatus
05/13/1998EP0614074B1 Optical wavelength measuring instrument
05/06/1998EP0840158A1 Device for determining phase errors of electromagnetic waves
05/06/1998CN1038274C Multi-standard vernier method and laser wavemeter
05/05/1998US5748316 Detector for wavelength of excimer laser
04/1998
04/30/1998WO1998017969A1 An optical wavelength scanner employing a reference system
04/30/1998WO1998017968A1 A multi-wavelength reference
04/09/1998DE19640725A1 Network analyzer
04/08/1998EP0619016B1 Process and device for the differential measurement of refraction indexes and use thereof
04/07/1998US5737069 Position detecting apparatus of optical interferometry
04/02/1998DE19640153A1 Speckle and speckle shearing interferometry process and equipment
04/02/1998DE19638203A1 Rotary movement optical sensor for gyroscope
03/1998
03/26/1998DE19639213A1 Shearing-Speckle pattern interferometry for oscillating object
03/25/1998EP0831312A1 Optical fibre interferometer and optical fibre piezo-electric modulator
03/18/1998EP0829745A1 Lightbeam control system
03/18/1998EP0683889B1 Control of spectral shift errors
03/17/1998US5729347 Optical wavelength measurement system
03/12/1998WO1998010255A1 Method and device for determining the phase- and/or amplitude data of an electromagnetic wave
03/12/1998DE19704496A1 Verfahren und Vorrichtung zur Bestimmung der Phasen- und/oder Amplitudeninformation einer elektromagnetischen Welle Method and apparatus for determining the phase and / or amplitude information of an electromagnetic wave
03/04/1998EP0826254A1 Optical frequency generator
03/03/1998US5724136 For providing a measurement of motion of a moving stage
02/1998
02/26/1998WO1998008214A1 Superheterodyne interferometer and method for compensating the refractive index of air using electronic frequency multiplication
02/26/1998WO1998008047A1 Superheterodyne method and apparatus for measuring the refractive index of air using multiple-pass interferometry
02/26/1998DE4313076C2 Interferometer Interferometer
02/26/1998DE19734087A1 Phase detection circuit for position sensitive detector
02/26/1998DE19727404A1 System for determining fluctuations in refractive index of gas or air
02/26/1998DE19727402A1 System for determining fluctuations in refractive index of gas or air
02/26/1998DE19633428A1 System for determining optical frequencies with light source
02/17/1998US5719673 Interferometer arrangement with adjustable optical path length difference for detecting a distance between different layers of an eye
02/12/1998WO1998005933A1 Interferometer and method for compensation of dispersion or increase in spectral resolution of such an interferometer
01/1998
01/02/1998DE19625830A1 Process for obtaining shearing patterns by speckle interferometry
12/1997
12/30/1997US5703357 Methods for wavelength discrimination of monochromatic light beams
12/29/1997EP0814331A2 Optical test system including interferometer with micromirror
12/16/1997US5698343 Laser wavelength detection and energy dosimetry badge
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