Screen and projection display system with improved viewing angle characteristic
US6714349B2 · kind B2 · utility
28Cited by
10References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Apr 27, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/006
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A screen for a projection display system. The screen has a Fresnel lens for converting incoming light into parallel light and a Lenticular lens disposed on a surface of the Fresnel lens to change a path of the parallel light from the Fresnel lens, providing a three-dimensional image to a user. The Lenticular lens includes plural pixel lenses corresponding to pixels of the screen. Each of the pixel lenses has a central diffusing portion formed on a light-outgoing portion and a peripheral diffusing portion formed on a peripheral portion of the central diffusing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.