Patents
Patents for G01B 9 - Instruments as specified in the subgroups and characterised by the use of optical measuring means (14,810)
04/1995
04/25/1995US5410406 Method and apparatus for nondestructive inspection utilizing phase integration and recording of induced vibrating nodal patterns
04/25/1995US5410404 Fiber grating-based detection system for wavelength encoded fiber sensors
04/22/1995CA2108961A1 Spectrocopic imaging system with ultrasonic detection of absorption of modulated electromagnetic radiation
04/18/1995US5408318 Wide range straightness measuring stem using a polarized multiplexed interferometer and centered shift measurement of beam polarization components
04/15/1995CA2108422A1 Dual interferometer spectroscopic imaging system
04/12/1995EP0647310A1 Method of an apparatus for interferometrically inspecting a surface of an object.
04/11/1995US5406377 Spectroscopic imaging system using a pulsed electromagnetic radiation source and an interferometer
04/06/1995WO1995009343A1 Interferometric method and apparatus to measure surface topography
04/06/1995DE4209260C2 Einrichtung zur Längenmessung Means for measuring length
04/05/1995EP0646768A2 Confocal optical microscope and length measuring device using this microscope
04/05/1995EP0646767A2 Interferometric distance measuring apparatus
04/05/1995EP0646766A2 Procedure and device for absolute interferometry with a laser-diode beam
04/05/1995CN2193993Y Feedback laser interferometer
04/04/1995US5404222 Interferametric measuring system with air turbulence compensation
04/04/1995US5404221 Extended-range two-color interferometer
04/04/1995US5404220 Measuring method and measuring apparatus for determining the relative displacement of a diffraction grating with respect to a plurality of beams
03/1995
03/29/1995EP0645616A1 Dispersion interferometer
03/29/1995EP0444526B1 Optical device
03/28/1995US5402236 Fiberoptic displacement sensor using interferometric techniques
03/28/1995US5402234 Method of profiling a surface of an object
03/28/1995US5402230 Heterodyne interferometric optical fiber displacement sensor for measuring displacement of an object
03/28/1995US5402193 Method and means for projecting images in a contour projector
03/28/1995US5402192 Simplified mirror system for contour projector
03/21/1995US5400143 Compact laser interferometer system
03/16/1995WO1995007054A1 Optical designating device, especially for use in microsurgery
03/16/1995DE4429748A1 Interferometer and method for measuring and stabilising the wavelength of light emitted by a laser diode
03/15/1995EP0643282A1 Optical device for measuring transversal offset
03/15/1995EP0585333B1 Interferometric measuring device in integrated optics
03/14/1995US5398113 Method and apparatus for surface topography measurement by spatial-frequency analysis of interferograms
03/14/1995US5398112 Method for testing an optical window with a small wedge angle
03/07/1995US5396328 Waveguide type displacement interferometer having two reference paths
03/01/1995EP0640224A1 Mechanical mounting
02/1995
02/28/1995US5394240 High-accuracy air refractometer utilizing two nonlinear optical crystal producing 1st and 2nd second-harmonic-waves
02/22/1995EP0639264A1 Solid-block homodyne interferometer.
02/22/1995EP0433008B1 Laser interferometric measuring apparatus
02/22/1995CN1099128A External difference interference measuring absolute distance system using dual-wavelength laser
02/21/1995US5392121 Speckle interferometry spatial filters or the like to achieve using phase selection
02/21/1995US5392120 Dual interferometer measuring system including a wavelength correction resulting from a variation in the refractive index
02/21/1995US5392117 Fabry-Perot optical sensing device for measuring a physical parameter
02/21/1995US5392116 Interferometric phase measurement
02/14/1995US5390023 Interferometric method and apparatus to measure surface topography
02/07/1995US5388115 Absolute measuring apparatus using laser and scanning mirrors
02/07/1995US5387975 Interferometer for measuring a surface configuration of a test object by an interference pattern using gratings to generate wave fronts
02/07/1995US5387974 Laser apparatus including Fabry-perot wavelength detector with temperature and wavelength compensation
02/02/1995DE4325758A1 Phase-modulated interferometer III
02/01/1995EP0636858A1 Phase-modulated interferometer
02/01/1995EP0564431B1 Device for stabilising the wavelength of a light beam emitted by a laser-diode and laser-interferometer
02/01/1995EP0439534B1 Photon scanning tunneling microscopy
01/1995
01/26/1995WO1995002802A1 Sensor system
01/26/1995CA2167066A1 Sensor system
01/25/1995EP0635705A2 Angular michelson interferometer and optical wavemeter based on a rotating periscope
01/25/1995EP0635697A2 Measuring arrangement
01/18/1995EP0634636A1 Michelson-type interferometer
01/12/1995DE4322682A1 Michelson interferometer
01/12/1995DE4107549C2 Verfahren zum Betrieb und zur Wellenzahlkalibrierung eines Interferometers nach Michelson Method of operation and wavenumber calibration of a Michelson interferometer
01/10/1995US5381232 Fabry-perot with device mirrors including a dielectric coating outside the resonant cavity
01/04/1995EP0631660A1 Interferometer requiring no critical component alignment
01/03/1995US5379115 Differential interferometer
12/1994
12/28/1994EP0631156A2 Polarization rotator with frequency shifting phase conjugate mirror and simplified interferometric output coupler
12/28/1994EP0631106A2 Apparatus and method for measuring thickness of thin semiconductor multi-layer film
12/28/1994EP0631105A2 Reflected light measuring method and reflected light measuring apparatus for a microscopic photometric system
12/28/1994EP0630467A1 Nanometer metrology
12/28/1994CN1096873A High-precision large aperture phase-shifting digital planar interferometer
12/27/1994US5377007 Interferometric surface inspection machine designed to support an element on the side to be inspected
12/22/1994WO1994029680A1 Jewellery gauge
12/20/1994US5374991 Compact distance measuring interferometer
12/14/1994EP0517781B1 Interferometer to determine the position of or distance travelled by a movable measuring mirror or the like
12/13/1994US5373487 Distributed acoustic sensor
12/13/1994US5372900 Method of reproducing reflecting type hologram and apparatus therefor
12/08/1994DE4413758A1 Method and device for examining the topography of surfaces
12/06/1994US5371588 Surface profile and material mapper using a driver to displace the sample in X-Y-Z directions
12/06/1994US5371587 Chirped synthetic wavelength laser radar
11/1994
11/30/1994EP0626596A1 Ultraviolet resistive antireflective coating and method of fabrication
11/29/1994US5369489 Time division multiplexed microscopy
11/24/1994WO1994027414A1 Distributed acoustic sensor
11/24/1994CA2160360A1 Distributed acoustic sensor
11/23/1994EP0625690A1 Optoelectric position measuring device
11/17/1994EP0490956B1 Optical measuring instruments
11/17/1994EP0399004B1 Interferometry
11/17/1994EP0364556B1 Comb filter pressure/temperature sensing system
11/15/1994US5365335 Optical low-coherence reflectometer using optical attenuation
11/15/1994US5365065 Sensitive interferometric parallel thermal-wave imager
11/10/1994WO1994025822A1 Interferometric flying height measuring device
11/09/1994EP0623802A2 Procedure and device for absolute measurements with a laser-interferometer
11/09/1994EP0623801A2 Procedure and device for absolute measurements with a laser-interferometer
11/03/1994DE4306884A1 Phase-modulated interferometer II
11/02/1994EP0622619A2 Optical signal detection apparatus and method for preventing polarization signal fading in optical fiber interferometric sensor systems
11/01/1994USH1370 Interferometric vibration and thermal expansion compensator
11/01/1994US5361383 Optical fiber having internal partial mirrors and interferometer using same
10/1994
10/26/1994EP0620912A1 Interferometer structure
10/26/1994CN2180969Y Wheat cutin testing Instrument
10/25/1994US5359417 Surgical microscope for conducting computer-supported stereotactic microsurgery and a method for operating the same
10/25/1994US5359415 Interferometer for determining the position of displacement travel of a movable measuring mirror or the like
10/18/1994US5357341 Method for evaluating interferograms and interferometer therefor
10/18/1994CA2016302C Fiber optic gyro
10/13/1994DE4322683C1 Michelson-type interferometer
10/12/1994EP0619032A1 Optical interferometer with squeezed vacuum and reduced guided-acoustic-wave brillouin scattering noise
10/12/1994CN1026192C Laser measuring device and method for precision measurement of linearity
10/11/1994US5355223 Apparatus for detecting a surface position
10/11/1994US5355218 Shearing interferometer for measuring lens lateral aberration