Method and illumination system for simulating CIE standard illuminant with multi-channel LED
US11388794B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 21, 2021 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Jul 21, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and an illumination system for simulating a CIE standard illuminant with a multi-channel LED are disclosed. The method includes adjusting a brightness of the main light source control channel, the wavelength complementary control channel, the color temperature adjustment control channel to make a mixed chromaticity coordinate meet a chromaticity coordinate of the CIE standard illuminant to be simulated according to chromaticity coordinates. The LED control channels are reduced through group optimization, and a technology which is discarded by multi-channel LED such as a filter is used, a control of a light source substantially reducing number of control channels and enabling a multi-channel LED to simulate a standard illuminant is formed, such that a single chromaticity control rather than a chromaticity control which must be transformed by a spectral conversion is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.