Lighting device
US4914553A · kind A · utility
211Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1988 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Sep 22, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The lighting device is equipped with a light guide having a linear Fresnel reflection surface consisting of steps of continuously alternating reflecting surfaces having two different reflection angles. A light source is installed at one end of the light guide of the above construction so that the light from the light source is emitted from the irradiation surface of the light guide after being reflected by the linear Fresnel reflection surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.