Varifocal optical device
US7619837B2 · kind B2 · utility
5Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2008 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Feb 25, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A varifocal optical device is provided. The varifocal optical device includes an optical lens, an actuator unit connected with the optical lens and having two areas that are bending-deformed in opposite directions to each other when a voltage is applied thereto, and a supporting unit to support the actuator unit, so that a focus of the optical lens is varied by the bending deformation when the voltage is applied to the actuator unit. Thereby, a driving displacement of the varifocal optical lens can be maximized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.