Multi-channel systems for providing tunable light with high color rendering and biological effects
US11371660B2 · kind B2 · utility
2Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Jul 13, 2020 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Jul 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides systems for generating tunable white light. The systems include a plurality of LED strings that generate light with color points that fall within red, blue, green, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output. Methods of generating white light by combining light generated by red, blue, green, and cyan color channels. Methods of generating white light points at substantially the same 1931 CIE chromaticity diagram color coordinates having different EML.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.