Method and circuit arrangement for producing mixed LED light of a predetermined color
US9137871B2 · kind B2 · utility
1Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2010 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Nov 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for operating a range of LEDs preferably fed with constant current, which range of LEDs preferably generates white mixed light with at least two LED types of different spectrum, wherein the movement of the color locus of the mixed light, which is caused by the different negative gradients of the temperature dependencies of the intensity of at least two different LED types, is reduced by circuitry without using measurements and feedback variables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.