| Patents for G01H 9 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means (3,383) |
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| 11/30/2000 | WO2000071981A1 Micromachined displacement sensors and actuators |
| 11/23/2000 | WO2000070308A1 Large scale wdm/tdm sensor array employing erbium-doped fiber amplifiers |
| 11/23/2000 | WO2000033037A3 System and method for characterizing, synthesizing, and/or canceling out acoustic signals from inanimate sound sources |
| 11/22/2000 | EP1053453A1 Improvements in or relating to sound detection |
| 11/16/2000 | WO2000068654A1 Laser doppler vibrometer for remote assessment of structural components |
| 11/16/2000 | CA2373679A1 Laser doppler vibrometer for remote assessment of structural components |
| 11/08/2000 | EP1049954A1 Fiber optic sensor system and method |
| 11/07/2000 | US6144790 Contact fiber optic impact sensor |
| 10/26/2000 | WO2000063659A1 Apparatus and method for measuring the characteristics of oscillating motion |
| 10/24/2000 | US6137621 Acoustic logging system using fiber optics |
| 10/17/2000 | US6134006 Imaging photorefractive optical vibration measurement method and device |
| 10/15/2000 | CA2302891A1 Amplitude measurement for an ultrasonic horn |
| 10/05/2000 | WO2000058737A1 Fiber-optic vibration sensor based on frequency modulation of light-excited oscillators |
| 10/05/2000 | CA2366971A1 Fiber-optic vibration sensor based on frequency modulation of light-excited oscillators |
| 10/04/2000 | EP1040726A1 Method of detecting atmospheric weather conditions |
| 10/04/2000 | EP0774109B1 Process for determining the vibration characteristics of a body |
| 09/27/2000 | EP1039276A2 Process and device to find movements of a vibrating corpus |
| 09/20/2000 | EP1037024A2 Electromagnetic vibration sensor |
| 09/20/2000 | EP1036307A1 Interferometric sensing apparatus |
| 09/20/2000 | CN2397483Y Laser exciting vibrograph |
| 09/19/2000 | US6122225 Hydrophone with compensation for statical pressure and method for pressure wave measurement |
| 09/14/2000 | WO2000054081A1 Sensor array cable and fabrication method |
| 09/12/2000 | US6118733 Interlink for spatially extended hydrophones |
| 08/29/2000 | US6111819 Reduced mechanical coupling interlink for spatially extended hydrophones |
| 08/23/2000 | EP1029222A1 Improved array topologies for implementing serial fiber bragg grating interferometer arrays |
| 08/03/2000 | WO2000045504A1 Apparatus for phase angle demodulation |
| 08/01/2000 | US6097486 Fiber optic acoustic sensor array based on Sagnac interferometer |
| 08/01/2000 | US6097478 Fiber optic acoustic emission sensor |
| 07/26/2000 | EP0763192B1 Ultrasonic detector using vertical cavity surface emitting lasers |
| 07/12/2000 | EP1017973A1 Acoustical imaging system |
| 07/11/2000 | US6087652 Contactless acoustic sensing system with detector array scanning and self-calibration |
| 07/06/2000 | WO2000039574A1 Method and device for the quality control of a work piece |
| 07/06/2000 | DE19860471A1 Verfahren und Vorrichtung zur Qualitätsprüfung eines Werkstücks Method and device for checking the quality of a workpiece |
| 07/05/2000 | EP1015854A1 Hydrophone with compensation for statical pressure and method for pressure wave measurement |
| 07/04/2000 | US6084672 Device for optically measuring an object using a laser interferometer |
| 07/04/2000 | US6084233 Optical sensor array having multiple rungs between distribution and return buses and having amplifiers in the buses to equalize return signals |
| 06/28/2000 | EP1012536A1 Apparatus and method for measuring and imaging traveling waves |
| 06/27/2000 | US6081481 Method for detecting buried objects by measuring seismic vibrations induced by acoustical coupling with a remote source of sound |
| 06/13/2000 | US6075603 Contactless acoustic sensing system with detector array scanning and self-calibrating |
| 06/08/2000 | WO2000033037A2 System and method for characterizing, synthesizing, and/or canceling out acoustic signals from inanimate sound sources |
| 06/07/2000 | CN1255822A Two-wire circuit equipment |
| 06/07/2000 | CN1255630A Semiconductor laser measurer of shock |
| 06/06/2000 | US6072567 Vertical seismic profiling system having vertical seismic profiling optical signal processing equipment and fiber Bragg grafting optical sensors |
| 05/16/2000 | US6064630 Sensor with an optical interferometric pick-off |
| 05/02/2000 | US6056696 Frustrated total internal reflection acoustic field sensor |
| 04/20/2000 | WO2000022478A1 Optical imager for birefringent detector acoustic imaging systems |
| 04/11/2000 | US6049411 Optical imager for birefringent detector acoustic imaging systems |
| 03/28/2000 | US6043917 Passive electro-optical acoustic sensor |
| 03/23/2000 | WO1999052323A8 Folded sagnac sensor array |
| 03/21/2000 | US6040571 Time domain multiplexed amplified sensor arrays with improved signal to noise ratios |
| 03/09/2000 | WO2000012978A1 Seismic sensing and acoustic logging systems using optical fiber, transducers and sensors |
| 03/09/2000 | WO2000012977A1 Seismic optical acoustic recursive sensor system |
| 03/09/2000 | CA2342639A1 Seismic optical acoustic recursive sensor system |
| 03/08/2000 | CN1246559A Active vibration damper for rotating roller and device for treating material width especially paper or paperboard width |
| 03/07/2000 | US6034924 Folded sagnac sensor array |
| 03/07/2000 | US6034760 Method of detecting weather conditions in the atmosphere |
| 03/02/2000 | WO2000011506A1 Variable coupler fiberoptic sensor and sensing apparatus using the sensor |
| 03/02/2000 | CA2341430A1 Variable coupler fiberoptic sensor and sensing apparatus using the sensor |
| 02/23/2000 | CN1245284A Instrument for measuring shift and vibration of object by polarized light interference of optical fibre |
| 02/09/2000 | EP0978589A2 Apparatus for actively reducing unwanted vibrations of a rotating cylinder; apparatus for treating a web material, in particular paper or cardboard; Cylinder |
| 02/03/2000 | DE19834706A1 Interferometric method for analyzing vibration, e.g. for motor vehicle industry; involves vibrating structure, and performing analysis if at least three vibration arrangements have characteristic function value |
| 02/02/2000 | EP0977022A2 Optical waveguide sensor system for remote detection |
| 01/25/2000 | US6018390 Integrated optics waveguide accelerometer with a proof mass adapted to exert force against the optical waveguide during acceleration |
| 01/25/2000 | US6018386 Oscillatory, optically coupled measurement system |
| 01/20/2000 | WO2000003197A1 Apparatus and method for measuring and imaging traveling waves |
| 01/20/2000 | WO2000002757A1 Method and apparatus for detecting defective track wheels |
| 01/18/2000 | CA2125194C Laser ultrasonic imaging |
| 01/13/2000 | WO2000002023A1 Dynamic holographic velocimeter for measuring vibrations |
| 01/13/2000 | DE19828498A1 Verfahren und Vorrichtung zum Messen von Unwuchten an rotierenden Körpern Method and apparatus for measuring unbalances on rotary bodies |
| 01/12/2000 | EP0970359A1 Photo-acoustic leak detector with multiple beams |
| 01/05/2000 | EP0969274A2 Method and device for measuring the unbalance of rotating bodies |
| 12/30/1999 | DE19809920C1 Optischer, insbesondere optoakustischer Sensor sowie optisches Mikrofon Optical, in particular opto-acoustic sensor and optical microphone |
| 12/28/1999 | US6008900 Method and apparatus for calibration of a multi-channel fiber optic interferometric sensor system in a signal processing system |
| 12/28/1999 | US6008898 Method and apparatus for measuring acceleration and vibration using freely suspended fiber sensor |
| 12/28/1999 | US6008887 Single beam laser surface velocity and displacement measurement apparatus |
| 12/15/1999 | EP0963540A1 System and method for laser ultrasonic bond integrity evaluation |
| 12/07/1999 | US5996416 Seismometer |
| 11/24/1999 | EP0836408A4 Apparatus and method for measuring tympanic displacement |
| 11/23/1999 | US5991026 Apparatus for multiplexing fibre-optic sensing interferometers |
| 11/16/1999 | US5987197 Array topologies for implementing serial fiber Bragg grating interferometer arrays |
| 11/09/1999 | US5979239 Ultrasonic imaging system |
| 11/03/1999 | EP0953830A2 Apparatus for and method to detect vibrations using optical interference in an optical fiber loop |
| 10/26/1999 | CA2204720C Extended, flexible, spatially weighted fiber optic interferometric hydrophone |
| 10/14/1999 | WO1999052323A1 Folded sagnac sensor array |
| 10/14/1999 | WO1999051942A1 Fiber optic acoustic sensor array based on sagnac interferometer |
| 10/06/1999 | EP0765466B1 Method for monitoring turbine blade vibration using microwaves |
| 09/30/1999 | DE19822286A1 Acoustic microscope, especially with thermoacoustic wave stimulator and detector |
| 09/28/1999 | US5959294 Method and apparatus for interrogation of fiber optic interferometric sensors in multi-channel applications |
| 09/15/1999 | EP0776464A4 Method and apparatus for determining resonance information |
| 09/14/1999 | US5952554 Method for testing frequency response characteristics of laser displacement/vibration meters |
| 09/09/1999 | DE19806240A1 Contact-less path and oscillation measurement of object |
| 09/07/1999 | US5949740 Unbalanced fiber optic Michelson interferometer as an optical pick-off |
| 09/07/1999 | US5948160 Method for detecting torsional oscillations and method for manufacturing a single crystal |
| 08/25/1999 | EP0875125A4 Flexible interlink for hydrophone array |
| 08/18/1999 | EP0936453A2 Method and apparatus for interrogation of fiber optic interferometric sensors in multichannel applications |
| 08/18/1999 | EP0936452A2 Method and apparatus for calibration of a multi-channel fiber optic interferometric sensor system in a signal processing system |
| 08/12/1999 | WO1999040398A1 Improvements in or relating to sound detection |
| 08/10/1999 | CA2259548A1 Method and apparatus for interrogation of fiber optic interferometric sensors in multi-channel applications |
| 08/10/1999 | CA2259527A1 Method and apparatus for calibration of a multi-channel fiber optic interferometric sensor system in a signal processing system |
| 08/05/1999 | WO1999029139A3 Optical acoustic sensor, especially a microphone, with an addtional reflection device |