Systems and methods for controlling the spectral content of LED lighting devices
US9844116B2 · kind B2 · utility
10Cited by
104References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2016 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Nov 30, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods for improving color accuracy and uniformity in LED illumination systems are disclosed including light engines, switching circuits and methods of adding phosphors or lumiphoric materials for controlling the addition or subtraction of light from one or more color light sources of the light engines to produce light of a uniform and consistent color. Systems and methods of providing LED light engines and associated illumination spectrums that are both visually appealing, rich in melanopic flux and that reduce blue light hazard exposure are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.