Projector
US8643793B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2012 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Apr 27, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133553
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projector includes: an illumination optical system which emits first light (green light); a reflection type first liquid crystal panel which modulates the first light emitted from the illumination optical system; a first wire grid element which is disposed at a position at which the first light modulated and reflected by the first liquid crystal panel is incident, which includes a plurality of metal wires extending so as to be almost parallel to a light-exit surface of the first liquid crystal panel, and in which the surface on which the first light is incident is inclined by an angle equal to or greater than 37° and less than 45° with respect to a normal direction of the light-exit surface of the first liquid crystal panel; a projection optical system which projects the first light modulated by the first liquid crystal panel and reflected from the first wire grid element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.