Micromirror projection of polarized light
US7407291B2 · kind B2 · utility
0Cited by
9References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2073
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The micromirror-based projection system of the present invention uses polarized illumination light in producing desired images on a display target. The display target has coated thereon a polarization film that absorbs most of the ambient light that would be incident onto the display target otherwise. Polarized illumination light is provided incident to the reflective surfaces of the spatial light modulator. The polarization direction of the illumination light can be associated with the rotation axes of the micromirrors and the polarization direction of the polarized film on the display target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.