Projection display-use screen and projection display system optical system
US7742230B2 · kind B2 · utility
5Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2005 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Apr 14, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0011
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To realize a diffusion film in which arbitrary control of the diffuse light intensity distribution characteristics, and an angular range of diffusion does not change with respect to an incoming light from a specific angular range and a light-outgoing direction converting element that is high in efficiency of conversion of the outgoing direction, and has no limit in the angle of conversion of the outgoing direction, and to provide a thin-model high-quality projection display using the same as a screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.