Piezoelectric composite transducer for use in ultrasonic probe
US5142187A · kind A · utility
26Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1989 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Aug 16, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0622
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is herein disclosed a piezoelectric composite transducer comprising a plurality of piezoelectric ceramic poles. The plurality of piezoelectric ceramic poles are arranged two-dimensionally so as to form spaces therebetween. Organic films are disposed on both end surfaces of the plurality of piezoelectric ceramic poles so that the spaces forms hollow portions. The hollow portions causes making small its acoustic impedance up to a value close to the acoustic impedance of water or a human body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.