Optical system and method for high contrast projection display
US6082861A · kind A · utility
46Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1998 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Sep 16, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3167
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical system for a projection display includes one or more polarizing beam splitters, one or more reflective light valves disposed to receive light transmitted through the one or more splitters and one or more phase correcting members, each disposed between the one or more splitters and the one or more light valves, whereby contrast of the display is substantially improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.