Projection apparatus
US6543900B2 · kind B2 · utility
12Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | May 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2053
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a projection apparatus utilizing plural light sources, in which the light source principally irradiating the light valve is switched by moving the relative position between the plural light sources and the mirror for guiding the lights outputted from such light source to the light valve. Also the configuration can be simplified by using commonly the light condensing device for the plural light sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.