| Patents for G01J 9 - Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength (4,525) |
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| 10/13/1994 | DE4322683C1 Michelson-type interferometer |
| 10/12/1994 | EP0619032A1 Optical interferometer with squeezed vacuum and reduced guided-acoustic-wave brillouin scattering noise |
| 10/12/1994 | EP0619021A1 Current sensor |
| 10/12/1994 | EP0619016A1 Process and device for the differential measurement of refraction indexes and use thereof |
| 10/04/1994 | US5353362 Method of generation of two electromagnetic modes using squeezers |
| 09/29/1994 | DE4411017A1 Optical, stationary spectroscopic imaging in strongly scattering objects by means of special light focusing and signal detection of light of different wavelengths |
| 09/27/1994 | US5350911 Wavefront error estimation derived from observation of arbitrary unknown extended scenes |
| 09/22/1994 | DE4322687C1 Interferometer, after Michelson |
| 09/21/1994 | EP0615623A1 Spectral discrimination using temporal mapping of light pulses through optical filters. |
| 09/20/1994 | US5349438 Structure for the dynamic support of a reflective element and interferometer comprising the same |
| 09/20/1994 | US5349437 Electromagnetic radiation detector utilizing an electromagnetic radiation absorbing element in a Mach-Zehnder interferometer arrangement |
| 09/14/1994 | EP0427797B1 Polarization interferometer |
| 09/08/1994 | DE4306653A1 Measuring head for a combined speckle and speckle/shear interferometer |
| 09/07/1994 | EP0614074A1 Optical wavelength measuring instrument |
| 09/06/1994 | US5345306 Method and apparatus for measuring spectral absorption in an opaque specimen and method and apparatus for measuring the microscopic absorption distribution |
| 08/31/1994 | EP0612976A2 Phase modulated interferometer |
| 08/30/1994 | US5343290 Surface particle detection using heterodyne interferometer |
| 08/30/1994 | US5343287 Integrated atmospheric transverse coherence length/laser radiation angle-of-arrival measurement system |
| 08/25/1994 | DE4305458A1 Phase modulated interferometer, e.g. for length measurement |
| 08/18/1994 | WO1994018525A2 Control of spectral shift errors |
| 08/02/1994 | US5335065 Sequential demultiplexing receiver for a network of optical sensors using spectrum modulation encoding |
| 08/02/1994 | EP0619032A4 Optical interferometer with squeezed vacuum and reduced guided-acoustic-wave brillouin scattering noise. |
| 07/21/1994 | WO1994016310A1 Zeeman ellipsometer |
| 07/21/1994 | WO1994016294A1 Nanometer metrology |
| 07/21/1994 | DE4300853A1 Spectroscopic determination of nitrogen oxide content in measurement chamber |
| 07/19/1994 | US5331400 Heterodyne interferometer arrangement |
| 07/19/1994 | CA1330716C Device and method for measuring in a wide band the non-reciprocal phase-shift generated in a ring interferometer |
| 07/12/1994 | US5329136 Voltage-tunable photodetector |
| 07/06/1994 | EP0605391A2 Polarisation interferometer |
| 06/28/1994 | US5325226 Optical coherent receiver |
| 06/28/1994 | US5325175 Solid-block homodyne interferometer |
| 06/08/1994 | EP0600636A1 Self-calibrated power meter |
| 06/07/1994 | US5319441 Method and apparatus for detecting wavelength of laser beam |
| 06/07/1994 | US5319435 Method and apparatus for measuring the wavelength of spectrally narrow optical signals |
| 05/31/1994 | US5317389 Method and apparatus for white-light dispersed-fringe interferometric measurement of corneal topography |
| 05/31/1994 | US5317382 Optical phase detection method with orthogonal polarization and phase compensation arrangement |
| 05/31/1994 | US5317144 Wave front aberration measuring apparatus having means for adjusting position of collimator lens |
| 05/26/1994 | WO1994011716A1 Optical spectrum analyzer and encoder using a modulated phase grating |
| 05/26/1994 | CA2149124A1 Optical spectrum analyzer and encoder using a modulated phase grating |
| 05/17/1994 | US5313538 Method of making an index grating in an optical fiber, and a quasi-distributed array of sensors formed in said fiber |
| 05/11/1994 | WO1994010552A1 Process and device for the differential measurement of refraction indexes and use thereof |
| 05/10/1994 | USRE34604 Sensor using fiber interferometer |
| 05/10/1994 | US5311279 Integrated optical apparatus for the interferometric measurement of light waves |
| 05/04/1994 | EP0595196A1 Optical focus test pattern monitoring system and process |
| 04/20/1994 | EP0592631A1 Phase detection deflectometer-type optical device having a large measuring range |
| 04/19/1994 | US5304805 Optical-heterodyne receiver for environmental monitoring |
| 04/15/1994 | CA2080557A1 Sensitive interferometric parallel thermal-wave imager |
| 04/13/1994 | EP0591912A2 Interferometer, comprising an intergrated arrangement and a mirror, which are seperated from each other by a measurement zone |
| 04/05/1994 | US5300786 Optical focus phase shift test pattern, monitoring system and process |
| 03/29/1994 | US5298970 Sample evaluating method by using thermal expansion displacement |
| 03/29/1994 | US5298755 Optical ionization detector |
| 03/17/1994 | WO1994005967A1 Optical interferometer with squeezed vacuum and reduced guided-acoustic-wave brillouin scattering noise |
| 03/15/1994 | US5294971 Wave front sensor |
| 03/10/1994 | DE4229652A1 Resonator spectrometer for spectral analysis or light source mode control - includes narrow band filter with variable resonant frequency optical ring resonator |
| 03/09/1994 | EP0585333A1 Interferometric measuring device in integrated optics. |
| 03/08/1994 | US5293213 Utilization of a modulated laser beam in heterodyne interferometry |
| 03/08/1994 | US5292483 Laser radiation, fluid sample |
| 03/03/1994 | WO1994004894A1 Optical wavelength measuring instrument |
| 03/03/1994 | DE4228535A1 Laboratory thin-film interferometer - with both measurement and reference optical paths passing through the liquid sample film |
| 02/15/1994 | US5287165 High sensitivity-wide dynamic range optical tilt sensor |
| 02/15/1994 | US5286968 Method and device for multichannel analog detection |
| 02/10/1994 | DE4226136A1 Heterodyne diffraction optical interferometer - directs beam through input transmission grating on transparent block, and reflects off rear reflection layer to second reflective layer on input surface |
| 02/01/1994 | US5283525 Method and device for the volume-selective extraction of a magnetic resonance spectrum by Hartmann-Hahn transfer |
| 01/12/1994 | CN1080719A Multi-standard vernier method and laser wavemeter |
| 01/06/1994 | WO1994000733A1 Method of an apparatus for interferometrically inspecting a surface of an object |
| 01/04/1994 | US5276500 Interferometer device, in particular a stellar interferometer device, incorporating a delay line |
| 01/04/1994 | CA1325842C Method and device for nondestructive evaluation |
| 12/28/1993 | US5274479 Mirror alignment and/or figure sensing with surface mounted holographic optical elements |
| 12/21/1993 | US5272332 Laser discrimination device |
| 12/15/1993 | EP0539571A4 Dynamic shearing interferometer |
| 12/14/1993 | US5270792 Dynamic lateral shearing interferometer |
| 12/14/1993 | US5270536 Method of using DC photocurrent measurements to sense wavelength or color of light or to characterize semiconductor materials |
| 11/30/1993 | US5266792 Temperature compensated optical detector |
| 11/25/1993 | WO1993023726A1 Solid-block homodyne interferometer |
| 11/18/1993 | EP0570243A1 Wavelength measuring device and laser apparatus equipped with the device |
| 11/16/1993 | US5263109 Optical transmission paths and methods of measuring their optical transmission times |
| 11/16/1993 | US5262842 Optical sensor having a wave guide substrate with interferometer integrated therein |
| 11/16/1993 | CA2095472A1 Wavelength measuring device and laser apperatus equipped with the device |
| 11/11/1993 | WO1993022637A1 Interferometer |
| 11/03/1993 | EP0567701A1 Inspection method and apparatus |
| 10/28/1993 | DE4313076A1 Laser interferometer for length and direction of movement measurement |
| 10/20/1993 | CN1077530A Fizeau laser wavemeter |
| 10/14/1993 | WO1993020430A1 Integrated optical compensating refractometer apparatus |
| 10/14/1993 | WO1993020416A1 Phase detection deflectometer-type optical device having a large measuring range |
| 10/12/1993 | US5253183 Obtaining a spectrogram from a single scanning of interference fringes |
| 10/05/1993 | US5251004 Integrating sphere power meter |
| 09/28/1993 | US5249072 Heterodyne receptor system and arrangement for visualizing optical transmission images |
| 09/22/1993 | EP0561015A1 Interferometric phase-measuring |
| 09/21/1993 | US5247342 Light wavelength measuring apparatus including an interference spectroscopic section having a movable portion |
| 09/14/1993 | US5245408 Electro-optic coherent light detector |
| 09/08/1993 | EP0471015A4 Apparatus for measuring the mode quality of a laser beam |
| 08/24/1993 | US5239364 Light phase difference measuring method using an interferometer |
| 08/24/1993 | CA1321503C Optical feedback isolator |
| 08/19/1993 | DE4303178A1 Determining parameters of materials using interfering light beams - detecting reflected light directed onto material, applying interfering light, and evaluating by Fast Fourier Analysis |
| 08/11/1993 | EP0555099A1 Spatial wavefront evaluation by intensity relationship |
| 08/10/1993 | US5235405 Detector apparatus for detecing coherent monohromatic point-source radiation |
| 08/10/1993 | US5235404 Interferometric technique for measurement of nonreciprocal optical effects in a sample |
| 08/08/1993 | CA2088649A1 Spatial wavefront evaluation by intensity relationship |
| 08/04/1993 | EP0303630B1 Variable phase stop for use in interferometers |
| 08/03/1993 | US5233462 Optical frequency counter/synthesizer apparatus |