Projection system
US6583940B2 · kind B2 · utility
14Cited by
3References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jun 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/143
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection system that is capable of providing a high-performance projection system and producing a high contrast projection image by using an optical modulation element, which can be positioned a predetermined distance away from an illumination optical system and a projection optical system. The optical modulation element is capable of modulating light received from the illumination optical system and projecting the modulated light to a projection optical system in the direction of a projection surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.