Optical device and projector
US7270418B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2004 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Jun 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device body (440) includes: three optical modulator holders (446) respectively holding three liquid crystal panels (441) and having cooling chambers with cooling fluid sealed therein to respectively cool the three liquid crystal panels (441) with the cooling fluid in the respective cooling chambers; a plurality of fluid circulators (448) intercommunicated with the three optical modulator holders (446) to guide the cooling fluid to the outside of the respective cooling chambers and re-introduce the cooling fluid into the respective cooling chambers; and a flow volume changer (449) disposed in a flow path of the cooling fluid and capable of changing flow volumes of the cooling fluid flown into the respective optical modulator holders (446) in accordance with heat values of the three liquid crystal panels (441).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.