Method and apparatus to increase visual contrast for video projection screen
US6836361B2 · kind B2 · utility
7Cited by
10References
9Claims
0Family size
Inventor
Key dates
| Filing date | Sep 4, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A front projection screen for a video projection system is provided. The front projection screen includes a reflection screen surface, and a reflection material on the reflection screen surface, wherein the reflection material consists of a plurality of red, green, and blue color reflecting cells for receiving projected lights, absorbing a part of the projected lights having spectrums beyond ranges of red, green, and blue color spectrums, and reflecting a part of the projected lights having spectrums within ranges of red, green, and blue color spectrums back.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.