Chromatic light separator and picture projector using a chromatic light separator
US5546200A · kind A · utility
15Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1993 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | May 20, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention concerns chromatic light separators, and is particularly intended to reduce their dimensions. A chromatic separator in accordance with the invention contains at least two selective wave length mirrors. According to one characteristic of the invention, the two selective mirrors are nested holographic mirrors. The invention is particularly suitable for three-color rear-projection type picture projectors using liquid crystal screens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.