| 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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| 09/08/1993 | EP0558843A1 Device for measuring vibration of a rotating blade |
| 08/18/1993 | EP0555372A1 Using doppler modulation parameters for amplitude estimation |
| 08/17/1993 | US5237632 Optical fibre coil assemblies |
| 08/11/1993 | CN1021784C Measuring method for athletic posture and apparatus thereof |
| 08/05/1993 | WO1993015386A1 Laser measurement system for dynamic structural analysis |
| 08/04/1993 | EP0554085A2 Hydrophone |
| 07/27/1993 | US5231611 Wavelength multiplexed fiber optics resonant ring hydrophone array |
| 07/22/1993 | WO1993014609A1 Optical vibration sensor |
| 07/20/1993 | US5229832 Optical ultrasonic material characterization apparatus and method |
| 07/20/1993 | CA1320356C Multiplexed fiber optic sensor |
| 06/29/1993 | US5224182 Spatially-weighted two-mode optical fiber sensors |
| 06/15/1993 | US5220160 Adaptive fiber optic shock wave sensor |
| 06/09/1993 | CN2135773Y Optical fibre sensor for testing wind-vibration of high-voltage transmission line |
| 06/08/1993 | US5218418 Differential fiber optic sensor and method |
| 05/25/1993 | US5214232 Electric stringed musical instrument equipped with detector optically detecting string vibrations |
| 05/04/1993 | US5207766 Fiber-optic vibration sensor |
| 04/13/1993 | US5201227 Device for measuring vibrations on rotating blade |
| 04/06/1993 | US5199630 Method and apparatus for measuring the vibration amplitude on an energy transducer |
| 03/16/1993 | US5194847 Apparatus and method for fiber optic intrusion sensing |
| 02/23/1993 | US5189240 Breath controller for musical instruments |
| 02/11/1993 | DE4126381A1 Mobile land mine identification equipment - transmits vibrations to ground and has photographing appts. working with holographic interferometry |
| 02/03/1993 | WO1993003400A1 Method of probing optical transmission line |
| 02/03/1993 | CA2093128A1 Method of detecting an optical transmission line |
| 12/29/1992 | US5175713 Sensing sound propagating in the ocean |
| 12/29/1992 | US5174298 Imaging process and system for transillumination with photon frequency marking |
| 12/29/1992 | CA1311939C Method for monitoring deformations of components with light waveguides |
| 12/16/1992 | EP0417162A4 An interferometric fibre optic network |
| 12/09/1992 | EP0516662A1 Electrooptical sensor system for marine seismic data acquisition. |
| 12/08/1992 | US5170061 Method of and apparatus for measuring oscillation of the outside diameter of a melt surface |
| 12/06/1992 | CA2069579A1 Transducers |
| 12/01/1992 | CA1311031C Temperature compensated fiber optic vibration sensor |
| 11/04/1992 | EP0511268A1 Ultrasonic sensor |
| 10/28/1992 | EP0511119A1 Fibre optic vibration sensor and accelerometer using the same |
| 10/27/1992 | CA1309488C Fiber optic sensor |
| 10/13/1992 | US5155707 Omni-directional hydrophone |
| 10/13/1992 | US5155548 Passive fiber optic sensor with omnidirectional acoustic sensor and accelerometer |
| 10/08/1992 | DE3920568A1 Light conductor hydrophone working on Mach=Zehnder principle - has one optical fibre holding polarisation forming measuring system and another forming reference system fixed to carrier and operated by coherent light |
| 10/06/1992 | US5153677 Method and apparatus for interferometric detection of surface displacement of solids |
| 09/15/1992 | US5146776 Method for continuously calibrating an optical vibration sensor |
| 09/03/1992 | DE4106572A1 Contactless measuring equipment using laser beam to measure vibrations of object - assigns evaluating unit to receiver modulating frequency shifted reference laser beam by dispersed laser beam from object intercepted by measuring head |
| 09/02/1992 | CN2114821U Reflection swing micro vibration detector |
| 09/01/1992 | US5144690 Optical fiber sensor with localized sensing regions |
| 08/19/1992 | EP0498936A1 Process and device for energy transducer oscillation amplitude measurement |
| 08/18/1992 | US5140559 Low flow-noise conformal fiber optic hydrophone |
| 08/18/1992 | US5139013 Indicator for ultrasound transducer |
| 08/11/1992 | US5137361 Optical detection of a surface motion of an object using a stabilized interferometric cavity |
| 07/28/1992 | US5134281 Microbend optic sensor with fiber being sewn thereto in a sinuously looped disposition |
| 07/21/1992 | US5132941 Method and apparatus for sensing sound waves in a fluid medium |
| 07/21/1992 | US5131748 Broadband optical detection of transient motion from a scattering surface by two-wave mixing in a photorefractive crystal |
| 06/17/1992 | EP0331671B1 Self-oscillating, optical resonant sensor |
| 06/10/1992 | EP0489597A2 Vibration monitoring methods and apparatus |
| 06/10/1992 | EP0489514A2 Improvements relating to optical fibre coil assemblies |
| 06/10/1992 | EP0489274A1 Optical fiber sensor with localized sensing regions |
| 06/07/1992 | CA2055978A1 Optical fibre coil assemblies |
| 06/04/1992 | CA2054875A1 Optical fiber sensor with localized sensing regions |
| 05/14/1992 | WO1992007514A1 Using doppler modulation parameters for amplitude estimation |
| 05/03/1992 | CA2095441A1 Method and apparatus for using doppler modulation parameters for estimation of vibration amplitude |
| 04/30/1992 | WO1992007238A1 Optical sensing systems |
| 04/30/1992 | WO1992007236A1 Optical fibre reflector |
| 04/28/1992 | US5109362 Remote seismic sensing |
| 04/21/1992 | US5105665 Sensors |
| 04/16/1992 | WO1992006358A1 Variable gain optical sensing system |
| 04/15/1992 | EP0414889A4 Single beam ac interferometer |
| 03/10/1992 | CA1296919C Distributed sensor array and method using a pulsed signal source |
| 02/25/1992 | US5091983 Optical modulation apparatus and measurement method |
| 02/11/1992 | US5086775 Method and apparatus for using Doppler modulation parameters for estimation of vibration amplitude |
| 01/15/1992 | EP0394219B1 Optical modulation and measurement process |
| 01/15/1992 | CN1057907A Measuring method for athletic posture and apparatus thereof |
| 01/14/1992 | US5080491 Laser optical ultarasound detection using two interferometer systems |
| 12/24/1991 | US5074309 Device for monitoring cardiovascular signals and fiber optic coupler phonocardio sensor therefor |
| 12/10/1991 | US5072110 Fiber optic strain and impact sensor system for composite materials |
| 12/10/1991 | US5071214 Interferometric fibre optic network |
| 12/03/1991 | US5070483 Remote seismic sensing |
| 11/21/1991 | EP0425554A4 An ultrasonic sensor |
| 11/12/1991 | US5063781 Fiber-optic vibration sensor |
| 11/07/1991 | DE3444424A1 Wound filament-type transducer array - for multidirectional sonar antenna |
| 11/06/1991 | EP0455186A1 Method and apparatus for measuring oscillation of melt surface |
| 11/06/1991 | CN1014641B Ultrasonic echograph and method of scanning object by means of such echograph |
| 10/29/1991 | US5062153 Reading device of polarimetric and interferometric sensors |
| 10/29/1991 | US5061846 Detecting disturbance using optical gap sensing |
| 10/17/1991 | CA2039597A1 Fiber optic sensor array |
| 10/17/1991 | CA2029452A1 Gps data synchronization for baseline determination |
| 09/24/1991 | US5051965 Acousto-optical marine sensor array |
| 09/19/1991 | DE4106728A1 Acousto=optical modulator for speech analysis - has line grating in front of ends of incoming and outgoing optical fibres |
| 09/11/1991 | EP0377571B1 Imaging process and system for transillumination with photon frequency marking |
| 09/03/1991 | US5044205 Method for monitoring deformations with light waveguides |
| 08/27/1991 | US5042302 Phase-accurate imaging and measuring of elastic wave fields with a laser probe |
| 08/23/1991 | WO1991013373A1 Electrooptical sensor system for marine seismic data acquisition |
| 08/23/1991 | CA2075997A1 Electrooptical sensor system for marine seismic data acquisition |
| 08/14/1991 | DE4004228A1 Remote inconsistency or foreign body location - uses opto-thermal-acoustic technique to measure surface oscillation and identify target locations |
| 08/13/1991 | US5038616 Non-intrusive determination of time varying and steady state torsional load magnitudes and locations of a shaft or system of shafts |
| 08/08/1991 | DE4003259A1 Interferometric detection of surface displacement of solid state body - exciting surfaces by illumination laser to produce ultrasonic vibrations and part of reflected radiation impinges on detector |
| 08/06/1991 | CA1287388C Broadband optical detection of transient motion from a scattering surface |
| 07/20/1991 | WO1991010885A1 Ultrasonic sensor |
| 07/20/1991 | CA2073959A1 Ultrasonic sensor |
| 06/12/1991 | EP0431842A2 Method of monitoring cardiovascular signals and fiber optic coupler phonocardio sensor therefor |
| 06/12/1991 | EP0431495A2 Method and apparatus for sensing sound waves in a fluid medium |
| 06/11/1991 | US5023845 Embedded fiber optic beam displacement sensor |
| 05/08/1991 | EP0425554A1 An ultrasonic sensor |
| 05/08/1991 | EP0287592B1 Spurious electromagnetic energy discriminator for electro-optical inspection systems |