Projection screen using dispersing lens array for asymmetric viewing angle
US6317263A · kind A · utility
35Cited by
11References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Jun 18, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/625
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Rear projection screens include a film layer having a plurality of lenses for diverging light horizontally and vertically. The horizontal viewing angle created by the lenses may be different from the vertical viewing angle. The light may be directed by the lenses in a particular direction, so that the direction of the maximum intensity light does not lie parallel to an axis normal to the screen surface. The lens film may be combined with an isotropic light disperser, such as a bulk diffuser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.