Speckle reduction using a tunable liquid lens
US7862183B2 · kind B2 · utility
5Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2007 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Apr 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/36
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A representative embodiment of the invention provides a projection system having a laser source that incorporates a tunable liquid lens and a spatial light modulator adapted to modulate light generated by the laser source to project an image on a viewing screen. The tunable liquid lens is adapted to vary focal length, alignment or position with respect to an optical element that is external to the lens, ability to diffuse light, and/or polarization rotation angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.