Patents for G01J 9 - Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength (4,525)
12/2000
12/13/2000EP0932814A4 An optical wavelength scanner employing a reference system
12/12/2000US6160831 Wavelength calibration tool for narrow band excimer lasers
12/12/2000US6160659 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
12/12/2000US6160626 Process and device for measuring the complex spectrum (amplitude and phase) of optical pulses
11/2000
11/29/2000EP1055103A1 Method and device for determining the distribution of intensity and phase in a laser beam different cutting planes
11/22/2000EP1054244A2 Optical scanning spectrometer.
11/21/2000US6151114 Coherent laser warning system
11/18/2000CA2307928A1 Optical scanning spectrometer
11/15/2000EP1052526A2 Controlled multi-wavelenght etalon
11/14/2000US6147755 Dynamic optical phase state detector
11/07/2000US6144449 Low coherence interferometric device
11/07/2000US6144025 Laser light source apparatus
11/02/2000WO2000065303A1 Gas insensitive interferometric apparatus and methods
11/02/2000WO2000065300A1 Optical heterodyne detection for cavity ring-down spectroscopy
10/2000
10/31/2000US6141138 Apparatus and method for measuring characteristics of light
10/26/2000DE19917439A1 Integrated optical sensor, has waveguide with measurement, reference arms; reference arm is connected to arrangement(s) for phase shifting sub-wave carried by reference arm
10/26/2000DE19916072A1 Optical spectroscopy device has spectrally dispersive or diffractive elements influencing wavefronts of interference sub-beam(s) depending on wavelength
10/25/2000EP1046900A2 Optical heterodyne detection for cavity ring-down spectroscopy
10/19/2000WO2000062026A1 Device and method for optical spectroscopy
10/12/2000WO2000059368A1 High resolution device for observing a body
10/10/2000US6130419 Fixed mount wavefront sensor
10/05/2000DE10015241A1 Optical interferometer for optical measurement, includes an optical part, e.g. a beam splitter divided between a piece fixed in the housing and a removable piece
09/2000
09/27/2000EP1038155A1 Wavelength measuring device with a mach zehnder interferometer controlled without mean value
09/21/2000DE10012312A1 Procedure and equipment for testing an excitation or molecular fluorescence laser optical system for spectral line narrowing or bandwidth selection uses a test module for determination of test parameters
09/19/2000US6122057 Four step discrete phase shift demodulation method for fiber optic sensor arrays
09/13/2000CN1266486A fiber-optic frequency shifter, optical insterferometer and method of generating two complementary optical interference signals using the same
09/12/2000US6118530 Optical scanning spectrometer
09/07/2000DE19935908C1 Bragg grating sensor for detecting physical quantity
09/05/2000US6115126 Optical wavefront analyzer and method using a single wave shifter
09/05/2000US6115122 Fabry-perot fiber bragg grating multi-wavelength reference
08/2000
08/29/2000US6111644 Interferometer for detecting and analyzing coherent radiation
08/22/2000US6107617 Liquid crystal active optics correction for large space based optical systems
08/16/2000EP1028311A1 Apparatus for measuring wavelength changes and wavelength tunable light source
08/10/2000DE19938103A1 Schema zur Messung der chromatischen Dispersion für optische Systeme mit Fernzugriffspunkten Scheme for measuring the chromatic dispersion of optical systems with remote access points
08/03/2000WO2000014513A9 Speckle mitigation for coherent detection employing a wide band signal
08/01/2000US6097487 Device for measurement of optical wavelengths
08/01/2000US6095651 Method and apparatus for improving vision and the resolution of retinal images
07/2000
07/25/2000US6094271 Wavelength measuring system
07/25/2000US6094267 Optical heterodyne detection for cavity ring-down spectroscopy
07/20/2000WO2000042401A2 Method and device for analysing a highly dynamic wavefront
07/19/2000EP1019688A1 Orrichtung z
07/18/2000US6091495 Optical interferometer and signal synthesizer using the interferometer
07/11/2000US6088142 System and method for precision wavelength monitoring
07/04/2000US6084227 Method and apparatus for wide field distortion-compensated imaging
06/2000
06/28/2000EP1012549A1 Method and device for wavefront optical analysis
06/27/2000US6081335 Phase difference measuring device with visible light source for providing easy alignment of optical axes and method therefor
06/27/2000US6081333 Bi-lateral shearing interferometer with beam convergence/divergence indication
06/21/2000EP1009984A1 Method and device for determining the phase- and/or amplitude data of an electromagnetic wave
06/20/2000US6078394 Wavelength manager
06/13/2000US6075598 Interferometer
06/08/2000WO2000033021A1 Method for improving measurements by laser interferometer
06/08/2000DE19856400A1 Direct phase measurement of reflected or transmitted light e.g. for materials testing by using slit to focus light onto image plane in which sensor is provided
05/2000
05/31/2000DE19703922C2 Verfahren zur Auflösung von Mehrdeutigkeit bei einer Phasenmessung Procedures for resolving ambiguity in a phase measurement
05/17/2000EP1000315A1 Pulse measurement using frequency shifting techniques
05/11/2000WO2000026622A1 Phase determination of a radiation wave field
05/10/2000EP0999434A1 Wavefront shape sensing device
05/10/2000EP0998662A1 Wavelength measuring system
05/04/2000DE19944021A1 Aspheric surface shape measuring apparatus has null element provided in optical path between light source and examined surface to convert spherical wave to desired aspherical wave
05/02/2000US6057913 Compact shearing wavefront sensor and method
04/2000
04/27/2000WO2000023764A1 Interferometer for optical wavelength monitoring
04/26/2000EP0995243A1 Wavelength reference for excimer laser
04/20/2000WO2000022393A1 Interferometer coupler using multiple input ports for improved stabiblity
04/20/2000DE19844976A1 Optical device for measuring physical parameter
04/20/2000CA2340643A1 Interferometer coupler using multiple input ports for improved stabiblity
04/18/2000US6052180 Apparatus and method for characterizing pulsed light beams
04/12/2000EP0991925A1 Fiber-optic frequency shifter, optical interferometer and method of generating two complementary optical interference signals using the same
04/04/2000US6046813 Wavelength detecting device
04/04/2000CA2235238C High energy laser focal sensor
03/2000
03/30/2000WO2000017613A1 Optical phase detector
03/30/2000WO2000017612A1 Wavefront sensing device
03/28/2000US6043883 Wavemeter and an arrangement for the adjustment of the wavelength of the signals of an optical source
03/16/2000WO2000014513A2 Speckle mitigation for coherent detection employing a wide band signal
03/15/2000CN2369231Y Spectral modulating microscopes
03/08/2000EP0983483A1 Interferometric measuring device
03/02/2000WO2000011430A1 Apparatus and method for the non-destructive testing of articles using optical metrology
03/01/2000EP0981733A1 Grating based phase control optical delay line
03/01/2000EP0777853B1 Device for carrying out spectroscopic measurements
03/01/2000CN1245904A Optical wave-front sensor
02/2000
02/29/2000US6031602 Method and apparatus for inspecting or testing a sample by optical metrology
02/24/2000WO2000009978A1 Apparatus for measuring a light beam wavelength
02/23/2000CN1245406A Apparatus for improving vision and resolution of retinal images
02/22/2000US6028935 Cryptographic receiver
02/17/2000WO1999042785A3 Apparatus and method for measuring the refractive index and optical path length effects of air using multiple-pass interferometry
02/15/2000US6025912 Interferometer having a micromirror
02/08/2000US6023057 Device for determining the phase errors of electromagnetic waves
01/2000
01/25/2000US6018537 Reliable, modular, production quality narrow-band high rep rate F2 laser
01/18/2000US6016199 Interferometric device for performing spectroscopic measurements with a stepped Fabry Perot
01/13/2000DE19829382A1 Measurement signal reconstruction method
01/12/2000EP0970353A1 Device and process for extinguishing a source
01/12/2000EP0969760A1 Apparatus for improving vision and resolution of retinal images
01/12/2000EP0795120A4 Method and apparatus for calibrating a laser wavelength control mechanism
01/12/2000EP0795116A4 Phase shifting diffraction interferometer
01/04/2000US6011622 Particle monitoring system
12/1999
12/28/1999US6008931 Optical frequency generator
12/28/1999US6008898 Method and apparatus for measuring acceleration and vibration using freely suspended fiber sensor
12/23/1999WO1999066308A1 Automated optical measurement apparatus and method
12/23/1999DE19822453A1 Method of absolute testing of aspherical surfaces using computer generated diffractive elements
12/21/1999US6005664 Nonuniform sampling for spectral and related applications
12/14/1999US6002484 Phase contrast aberroscope
12/09/1999DE19820295C1 Optical damping element arrangement for damping optical signal intensities
1 ... 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 ... 46