Rear projection screen
US4174883A · kind A · utility
7Cited by
1References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1977 |
| Grant date | Nov 20, 1979 |
| Priority date | — |
| Expiry date | Dec 14, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rear projection screen comprises a light scattering member composed of a melted mixture containing at least two high polymers having different refractive indexes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.