Illumination device
US5186537A · kind A · utility
18Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1991 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Jun 3, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2113/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin illumination device providing uniform luminance distribution on the diffusing plate comprising a reflecting plate, linear light sources arranged in the vicinity of the reflecting plate and a diffusing plate arranged on the opposite side of the reflecting plate with regard to the light sources, section of the reflecting plate having a shape of continuous curves having different curvature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.