High efficiency micro projection optical engine
US8403496B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2010 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | May 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/1006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high efficiency micro projection optical engine includes a light source module, a lens assembly, a micro display panel and a projection lens. An image of the luminous surface of light emitting elements of the light source module is formed in the vicinity of the micro display panel. The micro display panel is arranged on the path of emission light of the lens assembly to modulate incident light and obtain image light with image information. The projection lens is used to project the image information on the micro display panel and form an image onto a screen. The optical engine enhances efficiency by means of critical illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.