Projection display device that displaces an optical position of an imager in conjunction with a focus adjustment
US8152313B2 · kind B2 · utility
4Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2009 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | May 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B3/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection display device has an imager that modulates light from a light source in accordance with an image signal, a projection optical system that enlarges and projects the light modulated by the imager onto a projection plane, a focus adjustment part disposed in the projection optical system, and a displacement part that displaces the imager in a direction vertical to a light axis of the projection optical system, in conjunction with the focus adjustment part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.