Surface light source device
US5414599A · kind A · utility
29Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1992 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Jul 8, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surface light source device comprising at least one light source, a transparent panel, a diffusing panel and a reflecting surface. This surface light source device is configured so that brightness is enhanced in a direction perpendicular to the diffusing panel by disposing, on the side of a front surface of the transparent panel, a transparent sheet which has protrusions having a saw-tooth-like sectional shape formed on one surface thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.