Projection-type color display device
US4850685A · kind A · utility
91Cited by
17References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Aug 18, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection-type color display device. The display device includes a light source which provides light and a color separation member which receives the light and which separates the received light into the different colors of red, blue and green light. A light valve device receives the red, blue and green light and modulates the light to produce images. A color synthesis cube prism synthesizes the three monochromatic lights modulated by the light valve. A projection lens system projects the synthesized image onto a screen for viewing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.