Artificial muscle camera lens actuator
US9634225B2 · kind B2 · utility
7Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2013 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Nov 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0084
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An artificial muscle structure has an electro-active polymer (EAP) layer having a frusto-conical shape and whose tip has an opening formed therein for use as a camera variable aperture. First, second and third electrode segments are formed on a rear face of the EAP layer. The second segment is positioned in a gap between the first and third segments so as to be electrically isolated from the first and third segments. The second segment has an opening formed therein that is aligned with the opening in the EAP layer. A complementary electrode is formed on a front face of the EAP layer. Other embodiments are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.