Multiple segment fiber optic hydrophone
US5317544A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Nov 9, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hydrophone includes a plurality of hydrophone components separated by finite spacings and interconnected to provide a single output signal. Each hydrophone component is based upon a single-mandrel design in which a cylindrical body is apportioned into sensing and reference sections. The sensing sections comprise coaxial arrangements of pliant inner and outer cylinders separated by an annular airspace while the adjacent reference sections comprise solid-walled cylinders. Finite separation distances between the hydrophone components result in reduced flow noise occasioned by increased sensing area while detection sensitivity is maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.