Variable focus microlens
US7898742B2 · kind B2 · utility
5Cited by
6References
21Claims
0Family size
Inventors
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | May 28, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A microlens chip comprises a variable focus fluidic microlens and actuator. The actuator varies the pressure in a fluidic channel in the microlens chip which is coupled to an aperture opening containing the microlens. Applying an electric field to the actuator creates changes in fluid pressure in the fluidic channel, which in turn changes the radius of curvature (i.e., focal length) of the fluidic microlens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.