Rear projection screen with shifted lens
US7136224B2 · kind B2 · utility
0Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2003 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Mar 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/625
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An object of the invention is to provide a rear projection screen that has a high contrast and produces high-quality images. The object is achieved by a rear projection screen and rear projection display apparatus having the same. This rear projection screen contains a vertical lenticular lens sheet on the viewer side, and the vertical lenticular lens sheet includes a lenticular lens capable of vertically refracting the incident light on its incident surface, black stripes in the vicinity of the focus of the lenticular lens in portions where the incident light does not pass through, and a flat surface on its viewer side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.