Large screen digital image projector
US7794092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2005 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Aug 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a projection system comprising: a polychromatic light source and at least one imaging assembly illuminated by an associated polychromatic illumination beam, and comprising: At least one part of the polychromatic beam, called first source beam, illuminating the first colored wheel which separates said source beam into a first monochromatic beam and into a two-tone beam, said first monochromatic beam illuminating the first imager and said two-tone beam being transmitted toward the second colored wheel.The second colored wheel being illuminated by said two-tone beam and separating said two-tone beam into second and third monochromatic beams, respectively illuminating said second and third imagers respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.