Opto-acoustoelectric device and methods for analyzing mechanical vibration and sound
US7134343B2 · kind B2 · utility
26Cited by
10References
1Claims
0Family size
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Key dates
| Filing date | Jul 21, 2004 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Jul 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R23/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An opto-acoustoelectric device encompasses a diaphragm having a diffraction grating, the diaphragm is susceptible to a vibration driven by an external force; a light source oriented to irradiate the diffraction grating; and a photo detector configured to detect the light diffracted by the diffraction grating and to convert the detected light into an electric signal. The electric signal corresponds to a displacement of the vibration in the diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.