Polarization light modulator
US7286277B2 · kind B2 · utility
12Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2006 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Feb 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Polarization light modulators are based on an interferometric design in which a polarizing beam splitter serves as a polarizer and analyzer. A polarization displacement device shifts orthogonally polarized light beams parallel to the long axis of their elongated cross sections. Phase shifts are imparted to the orthogonally polarized beams by linear array MEMS optical phase shift devices. The output of the light modulator is a line image which may be scanned to form a two-dimensional image. Features to improve brightness, contrast and overall compactness of design are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.