LED lighting apparatus
US11497094B2 · kind B2 · utility
0Cited by
42References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 13, 2021 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Oct 13, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED lighting apparatus, including an LED light source configured to emit white light having a first melanopic/photopic (M/P) ratio; a tuning LED light source configured to emit tuning blue light having a peak wavelength in a range of 465 nm to 495 nm; and a driving control unit configured to control currents respectively applied to the LED light source and the tuning LED light source to generate tuned white light having a second M/P ratio higher than the first M/P ratio
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.