Reflective projector
US6478429B1 · kind B1 · utility
233Cited by
7References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1999 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Apr 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3167
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reflective projector includes a light source, reflective liquid crystal panels, a dichroic prism for separating a light beam from the light source into light beams of predetermined colors by using interference and for synthesizing the light beams of predetermined colors into a light beam, and a projection lens. The reflective projector further includes a first polarizer provided between the light source and the reflective liquid crystal panels and a second polarizer provided between the reflective liquid crystal panels and the projection lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.