Piezopolymer transducer with matching layer
US8564177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2012 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Aug 24, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/4483
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Matching layers improve the performance of ultrasonic transducers. Such layers have traditionally required significant effort and expense to be added to ultrasonic transducers. The present invention discloses a method of producing ultrasonic transducers with a matching layer, specifically for ultrasonic transducers utilizing piezopolymer transducer materials. Rather than the conventional method of forming the piezopolymer on a substrate and then attaching a matching layer through which the transducer emits its ultrasound energy, we teach depositing the piezopolymer on a substrate that also serves as a matching layer through which the ultrasound is emitted. Methods of how to select materials and modify their ultrasonic characteristics are also discussed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.