Dual-mode spectral dimming lighting system
US11212890B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2020 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Lighting control systems are disclosed, which are configured to detect a rate at which a total current from a current driver is being changed. The total current is an amount of current for a plurality of LED channels comprising a first LED channel and a second LED channel. The systems are also configured to control a first current to the first LED channel and a second current to the second LED channel, the first current and the second current each being a portion of the total current. The controlling comprises: when the rate is detected as being a first slope, changing a ratio of the second current to the first current; and when the rate is detected as being a second slope different from the first slope, keeping the ratio constant while the total current is adjusted according to the dimmer control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.