Projector and liquid crystal panel unit for use in projector with optical sheet edge-tilting mechanism
US7345724B2 · kind B2 · utility
3Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | May 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projector includes: a liquid crystal panel in which liquid crystal molecules to be irradiated with light from a light source are sealed; a polarizing plate disposed in a position to face the liquid crystal panel; and an optical compensation sheet disposed between the polarizing plate and the liquid crystal panel and compensating birefringence of the liquid crystal molecules. The optical compensation sheet can be adjusted by being swung in a plane orthogonal to the optical axis, and its normal can be adjusted so as to be tilted from the optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.