Rear projection screen
US4927233A · kind A · utility
20Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1989 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | Mar 6, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/625
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A screen medium of a rear projection screen is formed on its incidence surface with lenticular lenses, and on its viewing surface with lenticular lenses in light focusing area and with grooves and ridges in no-light focusing areas. Each of the grooves is bordered by the ridges and filled therein a ink so as to form an ambient light absorbing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.