Color separating unit and projection type image display apparatus employing the same
US7287858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2004 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Feb 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3117
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display apparatus which includes at least one light source to generate and radiate a light beam, a color separating unit to separate the light beam emitted from the light source into a plurality of color light beams and make at least one of the separated color light beams and the other color light have different polarizations. Further, a plurality of light valves are used to form an image by controlling at least one of the color light beams separated by the color separating unit and emitted therefrom, in the unit of pixel according to input image signals. Additionally, an image combiner is used to combine images generated by the light valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.