| 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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| 12/29/1997 | EP0813802A1 Passive acousto-optic modulator |
| 12/17/1997 | EP0635120B1 System for monitoring torsional vibrations and operating parameters of rotating shafts |
| 11/12/1997 | EP0806687A1 Optomechanical device and applications to optical integrated sensors |
| 11/04/1997 | US5684592 System and method for detecting ultrasound using time-delay interferometry |
| 10/30/1997 | WO1997040643A1 Active fiber-optic opto-acoustic detector |
| 10/29/1997 | EP0803049A1 Diagnostic system for fiber grating sensors |
| 10/23/1997 | WO1997039305A1 Sensitive and fast response optical detection of transient motion from a scattering surface by two-wave mixing |
| 10/21/1997 | US5680212 Sensitive and fast response optical detection of transient motion from a scattering surface by two-wave mixing |
| 10/21/1997 | US5679899 Method and apparatus for non-destructive testing of structures |
| 10/08/1997 | EP0800056A2 Procedure to examine the physical properties of layer-covered materials |
| 10/07/1997 | US5675674 Optical fiber modulation and demodulation system |
| 10/07/1997 | US5675075 Acoustic microscope |
| 09/23/1997 | US5671191 Variable coupler fiber optic sensor hydrophone |
| 09/16/1997 | US5668779 Hydrophone group design for shallow towed applications |
| 09/10/1997 | EP0794414A2 Fiber optic hydrophone having rigid mandrel |
| 08/27/1997 | EP0791812A1 Optical vibration sensor |
| 08/26/1997 | US5660909 Sheet for measuring ultrasonic waves |
| 08/06/1997 | EP0676039B1 Very low amplitude microvibration sensing device |
| 07/29/1997 | US5652390 Method and device for autonomous measurement of an irregular movement based on resonatory sensor |
| 07/23/1997 | EP0784787A1 System for measuring ultrasonically the elastic properties of a moving paper web |
| 07/08/1997 | US5646728 Ultrasensitive interferometer suitable for detecting gravitational waves |
| 06/26/1997 | DE19548158A1 Very small optical measuring head for laser Doppler vibrometer |
| 06/19/1997 | DE19546860A1 System for measuring oscillation of probe in probe-head for scanning optical probe microscope |
| 06/17/1997 | US5638824 For monitoring movement |
| 06/04/1997 | EP0776465A1 Laser vibrometer |
| 06/04/1997 | EP0776464A1 Method and apparatus for determining resonance information |
| 06/03/1997 | US5636181 Ultrasonic/vibration detection using polarization beating in a microchip laser |
| 05/27/1997 | US5633960 Spatially averaging fiber optic accelerometer sensors |
| 05/22/1997 | WO1997010697A3 An optical fiber vibration modal filter for flexible structures produced by the photorefractive effect |
| 05/22/1997 | DE19612925C1 Coated workpiece material characteristics testing system |
| 05/21/1997 | EP0774109A1 Process for determining the vibration characteristics of a body |
| 05/21/1997 | CN1150253A 原子力显微镜 AFM |
| 05/15/1997 | DE19541952A1 Fibre=optic hydrophone especially for measuring sound pressure of ultrasonic signals |
| 04/29/1997 | US5625724 Fiber optic hydrophone having rigid mandrel |
| 04/29/1997 | US5625605 Optic bundle towed array |
| 04/24/1997 | WO1997014939A1 Passive sensor for monitoring vibration of a combustion turbine blade |
| 04/23/1997 | EP0769698A1 Method and device for optically measuring rotational speed of combustion engines, in particular in vehicles |
| 04/23/1997 | EP0769136A1 Ultrasonic/vibration detection using polarization beating in a microchip laser |
| 04/22/1997 | US5623307 Apparatus for measuring surface movement of an object that is subjected to external vibrations |
| 04/02/1997 | EP0765466A1 Microwave system and method for monitoring turbine blade vibration |
| 04/01/1997 | US5616916 Configuration measuring method and apparatus for optically detecting a displacement of a probe due to an atomic force |
| 03/27/1997 | WO1997010697A2 An optical fiber vibration modal filter for flexible structures produced by the photorefractive effect |
| 03/19/1997 | EP0763192A1 Ultrasonic detector using vertical cavity surface emitting lasers |
| 03/04/1997 | US5608166 Generation and detection of ultrasound with long pulse lasers |
| 02/11/1997 | US5602800 Methods for ultrasonic/vibration detection using polarization beating in a microchip laser |
| 01/09/1997 | WO1997001082A1 Laser vibrometer |
| 01/09/1997 | DE19522272A1 Laservibrometer für Schwingungsmessungen Laser vibrometer for vibration measurements |
| 01/07/1997 | US5591914 Ultrasonic position sensor |
| 12/31/1996 | US5590090 Ultrasonic detector using vertical cavity surface emitting lasers |
| 12/19/1996 | WO1996039924A1 Apparatus and method for measuring tympanic displacement |
| 11/12/1996 | US5574699 For receiving acoustic signals from a remote target |
| 11/05/1996 | US5572609 Optical fiber vibration modal filter for flexible structures produced by the photorefractive effect |
| 11/05/1996 | US5571969 Vibration detection and reduction system and vibration sensors for use in micro-gravity environment |
| 10/31/1996 | DE19514852A1 Method for measuring acceleration and vibration |
| 10/10/1996 | WO1996031761A1 Ultrasonic/vibration detection using polarization beating in a microchip laser |
| 10/03/1996 | WO1996030731A1 Ultrasonic detector using vertical cavity surface emitting lasers |
| 09/17/1996 | US5557099 Signal device for turbo-engines using an optical probe with an elliptical shaped light beam |
| 09/12/1996 | WO1996028001A1 Passive acousto-optic modulator |
| 09/11/1996 | CN2235117Y Combined Michelson interferometer |
| 08/13/1996 | US5546187 Self-referencing laser-based ultrasonic wave receiver |
| 08/01/1996 | DE19502756A1 Contact free oscillation analysis of components for interference free characterisation of components |
| 07/10/1996 | EP0720443A1 Ultrasonic monitor |
| 07/02/1996 | US5532981 Method of incorporating vertical cavity surface emitting lasers in an ultrasound detector |
| 06/19/1996 | EP0717273A1 Laser ultrasonic imaging |
| 06/18/1996 | CA2135602C System and method for monitoring torsional vibrations and operating parameters of rotating shafts |
| 06/06/1996 | WO1996017224A1 Diagnostic system for fiber grating sensors |
| 05/28/1996 | US5520052 Method and apparatus for determining material structural integrity |
| 05/15/1996 | EP0711406A1 Acoustic microscope |
| 05/14/1996 | US5515730 Apparatus for detecting the amplitude, frequency or modes of vibration of a vibrating panel |
| 05/07/1996 | US5513533 Detection of vibrational energy via optical interference patterns |
| 04/30/1996 | US5511426 Process and device for measuring operating turbine blade vibrations |
| 04/18/1996 | WO1996011395A1 System for measuring ultrasonically the elastic properties of a moving paper web |
| 04/10/1996 | EP0516662B1 Electrooptical sensor system for marine seismic data acquisition |
| 04/02/1996 | US5504720 Fiber optic planar hydrophone |
| 04/02/1996 | US5504719 For remote detection of sonic waves in water |
| 03/26/1996 | US5501105 Digital signal processing of encoder signals to detect resonances in rotating machines |
| 03/21/1996 | WO1996008700A1 Method for measuring the vibrations of a test object |
| 03/21/1996 | WO1996008695A1 Optical sensors and method for producing fibre optic modalmetric sensors |
| 03/05/1996 | US5497233 Optical waveguide vibration sensor and method |
| 03/05/1996 | US5495767 Laser vibrometer |
| 02/22/1996 | WO1996005486A1 Method and apparatus for determining resonance information |
| 02/22/1996 | CA2193628A1 Method and apparatus for determining resonance information |
| 02/15/1996 | WO1996004532A1 Process for determining the vibration characteristics of a body |
| 02/14/1996 | EP0696723A1 Fiber optic sensor |
| 02/08/1996 | DE4427692A1 Verfahren zum Bestimmen des Schwingungsverhaltens eines Körpers A method of determining the vibration characteristics of a body |
| 01/02/1996 | US5479826 Microwave system for monitoring turbine blade vibration |
| 12/28/1995 | WO1995035484A1 Microwave system and method for monitoring turbine blade vibration |
| 12/26/1995 | US5479375 Real time imaging of acoustic wave devices |
| 12/12/1995 | US5475216 Fiber optic sensor having mandrel wound reference and sensing arms |
| 12/12/1995 | US5474813 Covering shaft with photosensitive material, masking, then synchronized rotation and exposure to controlled radiation |
| 12/07/1995 | WO1995033187A1 Method and device for the measurement of vibrations of a moving structure |
| 12/06/1995 | EP0685390A1 Vibration sensors for use in micro-gravity environment |
| 11/28/1995 | US5469745 System for determining FOVM sensor beat frequency |
| 10/31/1995 | US5463593 Apparatus for quantitative measurements of ultrasonic wave power distribution |
| 10/24/1995 | US5460048 Ultrasonic sensor using a polarization maintaining fibre |
| 10/17/1995 | US5457998 Method of detecting an optical transmission line |
| 10/12/1995 | WO1995027183A1 Noninvasive method and apparatus for determining resonance information for rotating machinery components and for anticipating component failure from changes therein |
| 10/11/1995 | EP0676039A1 Very low amplitude microvibration sensing device. |
| 09/19/1995 | US5450752 Ultrasonic position sensor for measuring movement of an object |
| 09/13/1995 | EP0671611A2 Vibration monitoring apparatus with strobe trigger feature |