Increased sensitivity piezoelectric hydrophones
US4810913A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Aug 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S310/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hydrophone is provided having at least one flexible piezoelectric sensitive element applied to a support, each sensitive element being formed of a flexible piezoelectric film associated with two electrodes and is applied to a synthetic plastic material support one face at least of which has hollow parts of very different shapes, for example an homogeneous distribution of cups, honeycombs, holes, etc, whose dimensions are determined as a function of the mechanical characteristics of the films used. The stresses applied thereto result in deforming each film inwardly of the hollow parts, which very greatly increases the sensitivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.