Projector with improved screen
US5694245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Feb 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/28
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projector comprising liquid crystal display panels and a projection lens for projecting the modulated light to a screen. The screen includes a transparent plastic member formed as a lenticular lens. The transparent plastic member has optical anisotropy. In order to eliminate an uneven pattern appearing in the screen caused by optical anisotropy and the difference between the light distribution characteristics in the screen for P- and S-polarized lights, the screen is arranged relative to the projection lens such that an arbitrary light component projected by the projection lens and made incident to the screen is not parallel to the optical axis of the plastic member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.