Lighting device, and method of operating a lighting device
US6499864B2 · kind B2 · utility
3Cited by
6References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Apr 3, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/901
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device with a light source and a first reflector which directs light provided by the light source towards at least two focal points in the operational state, is to be constructed such that the light path to one of the focal points can be obstructed without thermal problems arising. A second reflector is provided which diverts away at least partly the light guided by the first reflector to a first of the two focal points towards the second one of the two focal points, directly or indirectly, as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.