Image projection device with an integrated photodiode light source
US6726329B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Nov 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3167
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A power-saving method with integrated photodiode light source. This device has a circuit board with a plurality of red, green and blue photodiodes as the device's light source. Additionally, a light control circuit is used to control light beam from the light source illuminating a reflector and then reflecting to a reflective display panel in order to reflect the light beam and generate an image. Thus, a projection module can project the image on a viewing plate. As cited, the inventive device includes: a light control circuit, a light source module, a polarizing beam splitter (PBS), a reflective display panel and a projection module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.