Actuated mirror optical intensity modulation
US5185660A · kind A · utility
80Cited by
10References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1990 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | Feb 22, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3129
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A television display apparatus wherein a white light source emits 9a beam onto a plurality of dichroic mirrors which split the beam into three beams of the primary colors, then reflects the three primary beams onto three deformable reflective surfaces, which again reflect the beams through slits in a non-reflective surface, thereby modulating the intensity of the beams. The amount of light passing through the slits is horizontally scanned by one surface of a rotating polygonal mirror, then passes through collimating and projection lenses and onto a screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.