Illumination device
US8201966B2 · kind B2 · utility
26Cited by
0References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Apr 11, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an illumination device, comprising a white LED, a red LED and a color filter. A hight color rendering index (CRI, Ra) and a high value of R9 (for strong red) can be obtained. One application is medical lighting, for example for surgical lights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.