Polarization recovery system using redirection
US6969177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2004 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Feb 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3102
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A polarization recovery system includes a polarizing beam splitter transmitting light of a useful polarization in an output direction and reflecting light of a non-useful polarization in a first orthogonal direction substantially orthogonal to the output direction. An initial reflector may reflect the non-useful polarization light in a second orthogonal direction substantially orthogonal to the output direction and the first orthogonal direction, and a final reflector may reflect the non-useful polarization light in the output direction. The non-useful polarization light may be rotated substantially to light of the useful polarization by the initial and final reflectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.