Luminaire and display using the same
US6254244A · kind A · utility
17Cited by
4References
24Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 19, 1998 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Oct 19, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controllable auto-heating type heat source is located at a periphery of a light source and light reflecting layers are placed between the light source and the controllable auto-heating type heat source. Therefore, use of a temperature detector and a control circuit in order to control the heat source are unnecessary, so that thermal runaway of the heat source is avoided. Further, the light reflecting layers reflect the light irradiated from the light source, so that the amount of the beam of light shielded by the heat source is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.