Projector screen having an improved horizontal view angle
US6275334A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1995 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Sep 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/625
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projector screen is composed of a Fresnel lens for collimating incident light from a light projection device, a lenticular lens formed of a plurality of constituent lenses for forming and spreading an image from the parallel light, and a screen protection panel for protecting a screen set up adjacent to the lenticular lens. A projecting part of a predetermined height is formed on the rear side of the screen panel facing the lenticular lens, and on the tip of the projecting part a black stripe is formed to serve as a light-absorbing means. The height of the projecting part is lower than that of a convex surface of the lenticular lens. The widened range of light-spreading angle of the lenticular lens improves a horizontal viewing angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.