Efficient optical system for a high resolution projection display employing reflection light valves
US5621486A · kind A · utility
64Cited by
16References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Jun 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system having a light tunnel, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.