Polarization recovery system for projection displays
US7006288B2 · kind B2 · utility
3Cited by
15References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2004 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Jun 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light guide comprising three guide sections and a light coupling element between the light guide sections. The light coupling element having an internal polarizing surface for reflecting light of a predetermined polarization state. Each light guide section has an entrance aperture, an exit aperture and at least first and second guide walls defining a light guide direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.