Bio-dimming lighting system
US10827579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2019 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Aug 16, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04847
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Lighting control systems are disclosed that have a plurality of current sensors and a microprocessor. A first current sensor in the plurality of current sensors measures a first current of a first LED channel, and a second current sensor measures a second current of a second LED channel. The microprocessor is configured to set a setpoint that defines a maximum current for a dimming profile of a lighting fixture, and control a biological light ratio according to the dimming profile. The ratio may be an M/P ratio of melanopic lux to photopic lux or an OPN5/OPN4 ratio of OPN5 lux to melanopic lux. The dimming profile correlates the ratio to a percentage of the maximum current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.