| 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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| 03/26/1987 | DE3630026A1 Device for detecting partial discharges in high-voltage systems |
| 03/25/1987 | EP0215660A2 Interferometric apparatus |
| 03/24/1987 | US4652744 Fiber optic sensor for detecting very small displacements of a surface |
| 03/24/1987 | US4652129 Interferometric detector with fibre-optic sensor |
| 03/24/1987 | US4652086 Ultrasonic detector cell and system |
| 03/24/1987 | US4651567 Non-coherent frequency source and sector scanning apparatus for ultrasonic imaging system using a liquid crystal detector cell |
| 03/11/1987 | EP0214081A2 Phase modulator for fiber-optic sensors |
| 03/10/1987 | US4649529 Data gathering system |
| 03/10/1987 | US4648274 Photoelastic measuring transducer and accelerometer based thereon |
| 03/03/1987 | US4648083 All-optical towed and conformal arrays |
| 03/03/1987 | US4648082 Marine acoustic gradient sensor |
| 02/25/1987 | EP0211120A1 Improvements relating to the manufacture of optical devices |
| 02/17/1987 | CA1217961A1 Stabilized fiber optic sensor |
| 02/12/1987 | DE3528380A1 Method and device for measuring the propagation time and, if required, the amplitude of acoustic surface waves |
| 01/28/1987 | EP0209721A1 Laser sensor |
| 01/21/1987 | EP0209515A1 Fibre-optic detector |
| 01/20/1987 | US4638153 Optical fibre sensing arrangements |
| 01/06/1987 | US4634852 Sensor using fiber optic interferometer |
| 01/06/1987 | US4633715 Laser heterodyne interferometric method and system for measuring ultrasonic displacements |
| 12/30/1986 | US4632551 Passive sampling interferometric sensor arrays |
| 12/03/1986 | EP0203682A2 Wavelength switched passive interferometric sensor system |
| 11/12/1986 | CA1213990A Fiber optic modulator and data multiplexer |
| 11/04/1986 | US4621263 Vibration telemetering system |
| 10/28/1986 | US4619529 Interferometric contact-free measuring method for sensing motional surface deformation of workpiece subjected to ultrasonic wave vibration |
| 10/14/1986 | CA1212754A1 Marine seismic sensor |
| 10/07/1986 | CA1212447A1 Non-destructive testing system employing a liquid crystal detector cell |
| 09/12/1986 | WO1986005271A1 A measuring device |
| 09/02/1986 | US4609290 Passive homodyne demodulator and sensor system |
| 08/20/1986 | EP0191589A2 Coherent distributed sensor and method using short coherence length sources |
| 08/20/1986 | EP0191588A2 Distributed sensor and method using coherence multiplexing of fiber-optic interferometric sensors |
| 07/29/1986 | CA1208781A1 Procedure for analysing reciprocating motion |
| 07/22/1986 | US4601580 Monitoring rotational speed of a rotating body |
| 07/15/1986 | CA1207551A1 Sensor using fiber optic interferometer |
| 07/15/1986 | CA1207548A1 Optical transducer |
| 06/18/1986 | EP0184585A1 Methods and apparatus for analog to digital conversion |
| 06/03/1986 | US4593385 Fiber optic sensor lead fiber noise cancellation |
| 05/20/1986 | US4589285 Wavelength-division-multiplexed receiver array for vertical seismic profiling |
| 05/13/1986 | CA1204496A1 Acoustic power meter |
| 04/23/1986 | EP0178814A2 Optical sensing systems |
| 04/22/1986 | CA1203398A1 Dual differential interferometer |
| 03/26/1986 | EP0175026A1 Marine seismic sensor |
| 03/25/1986 | US4577508 Optical vibration analyzer |
| 02/25/1986 | US4572949 Fiber optic sensor for detecting very small displacements of a surface |
| 02/19/1986 | CN85201064U Low noise photoacoustic detector |
| 02/04/1986 | US4568408 Fiber optic energy sensor and optical demodulation system and methods of making same |
| 02/04/1986 | US4567769 In a test object |
| 01/21/1986 | US4566135 Pressure transducer |
| 01/14/1986 | US4563931 System for scanning mechanical vibrations |
| 12/27/1985 | EP0165671A2 Passive sampling interferometric sensor arrays |
| 11/26/1985 | US4554836 Laser vibrometer |
| 11/12/1985 | CA1196706A1 Fiber optic sensor |
| 10/15/1985 | US4547869 Marine seismic sensor |
| 10/08/1985 | US4546458 Frequency modulated laser diode |
| 10/08/1985 | US4545253 Data gathering system |
| 08/20/1985 | US4536861 Optical fibre hydrophone |
| 08/20/1985 | US4536088 Polarimetric Fabry-Perot sensor |
| 08/13/1985 | US4534222 Fiber-optic seismic sensor |
| 07/23/1985 | US4530603 Stabilized fiber optic sensor |
| 07/16/1985 | US4530078 Microbending fiber optic acoustic sensor |
| 07/03/1985 | EP0147180A2 Improved ultrasonic detector cell and system |
| 06/25/1985 | US4525818 Stable fiber-optic hydrophone |
| 06/25/1985 | US4525626 Fiber optic vibration modal sensor |
| 06/18/1985 | US4524436 Pressure wave fiber optic transducer cable |
| 06/04/1985 | US4521684 Optical measurement system with light-driven vibrating sensor element |
| 05/28/1985 | US4519252 Pressure and temperature compensated photoelastic hydrophone |
| 05/21/1985 | US4518992 Acoustic imaging system and method |
| 05/21/1985 | US4518857 Temperature and pressure compensated elasto-optic sensor |
| 05/02/1985 | EP0139057A1 An optical vibration analyser |
| 04/23/1985 | US4512661 Dual differential interferometer |
| 04/16/1985 | CA1185692A1 Portable liquid crystal testing device |
| 04/16/1985 | CA1185466A1 Optical device for sustaining a radiant energy pulse device |
| 04/02/1985 | US4507966 Method and means for imaging sound waves |
| 03/26/1985 | US4507705 Vibration analyzing device |
| 03/26/1985 | US4507658 Narrow beam radar installation for turbine monitoring |
| 03/26/1985 | US4506550 Non-destructive testing system employing a liquid crystal detector cell |
| 03/19/1985 | US4506186 Spark plug and optical combustion sensor combination |
| 03/05/1985 | US4503325 Apparatus for detecting vibration by comparing the phase relation of portions of a divided light image |
| 02/19/1985 | US4500979 Optical seismic transducer |
| 01/22/1985 | US4495411 Fiber optic sensors operating at DC |
| 01/09/1985 | EP0130968A1 Device for testing an internal-combustion engine |
| 01/08/1985 | US4492468 Interferometer for the real time display of deformations of vibrating structures |
| 01/08/1985 | US4492107 Acoustic power meter |
| 01/02/1985 | EP0129972A1 Polarised light optical sensing arrangements |
| 12/18/1984 | CA1179523A1 Holographic inspection technique |
| 12/04/1984 | US4486657 Phase-lock fiber optic interferometer |
| 11/13/1984 | US4481825 Device for measurement of vibrations |
| 10/24/1984 | EP0122342A1 Portable liquid crystal testing device |
| 10/03/1984 | EP0120737A1 Optical fibre hydrophone |
| 09/18/1984 | US4471659 Optical vibration sensor |
| 09/11/1984 | US4471474 Coupled waveguide acousto-optic hydrophone |
| 09/04/1984 | CA1173906A1 Apparatus for measuring dynamic parameters in a rotating shaft |
| 08/28/1984 | US4468091 Fiber optic energy sensor and demodulation system and method of making same |
| 07/25/1984 | EP0113941A1 Liquid crystal acousto-optical detector cell |
| 06/19/1984 | EP0100357A4 Methods and means for utilizing apodized beams. |
| 06/13/1984 | EP0110152A2 System for scanning mechanical vibrations |
| 05/29/1984 | US4451151 Optical device for sustaining a radiant energy pulse which circulates within a monomode wave guide a gyrometer and a hydrophone equipped with said optical device |
| 05/22/1984 | US4450541 Bias compensated optical grating hydrophone |
| 05/15/1984 | US4449210 Fiber optic hydrophone transducers |
| 05/15/1984 | US4448494 Acousto-optical signal detector |
| 05/01/1984 | US4446543 Optical resonator single-mode fiber hydrophone |