Optical system for projection display
US5604624A · kind A · utility
25Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0833
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image projection system wherein light provided from a source passes through a prism and is then incident on an array of reflecting elements which are individually adjustable between a first and second position. Light reflected from each element re-enters the prism. Light from elements in the first position pass through the prism and into a lens. Light from elements in the second position travel through the prism, but do not enter the lens. The principal plane of the lens and the plane in which the elements are located are each parallel to the adjacent surface of the prism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.