Three color separation using subtractive dichroic beamsplitters
US4962997A · kind A · utility
13Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1988 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Apr 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A structure is provided which receives light from a single source, separates the light into components, modulates the components with image information, and recombines the resultant image beams in order to form a multi-colored image. A small optical path length is provided for each of the separated beams, and small physical size is realized, without the use of crossed beamsplitters, with their attendant cost and performance limitations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.