Acoustic imaging systems adaptable for use with low drive voltages
US6685647B2 · kind B2 · utility
5Cited by
8References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2001 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jul 28, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/483
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Acoustic imaging systems are provided. A representative acoustic imaging system includes a transducer that incorporates a backing and an acoustic element extending from the backing. The acoustic element includes a piezoelectric element and a de-matching layer. The de-matching layer is arranged between the backing and the piezoelectric element and exhibits an acoustic impedance greater than that of the piezoelectric element. The piezoelectric element exhibits a thickness that is less than one-half of a wavelength to be generated by the piezoelectric element. Methods also are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.