Optical system for projection display
US5552922A · kind A · utility
62Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1993 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Apr 12, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0833
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a 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.