Optical device and projector
US6854848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Oct 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a structure to attach a liquid crystal panel to a prism, which enables further enhancements in cooling capabilities. The structure includes a storing member fixed on a base and holding a holding frame, where a liquid crystal panel is held. Erected pieces to form a space to receive the holding frame are formed protruding on both left and right sides at the light incident side. Protrusions to form an air path with a cross-dichroic prism are formed on both left and right sides on the light emitting side. The liquid crystal panel is attached to the cross-dichroic prism through a holding member having an opening at a portion corresponding to the panel face of the liquid crystal panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.