Polarizing beamsplitter assembly
US7475991B2 · kind B2 · utility
2Cited by
23References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Apr 5, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical unit that includes a polarizing beamsplitter (PBS). The PBS includes a reflective polarizer that transmits a portion of a light beam that has a first polarization and reflects a portion of the light beam that has a second polarization. A light absorbing device is operatively disposed relative to the PBS. The light absorbing device receives the light either transmitted or reflected by the PBS. The light absorbing device includes a light capture portion having a structured surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.