Illuminating device and illuminating method
US8952627B2 · kind B2 · utility
11Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2011 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminating device includes a plurality of kinds of LEDs that emit light having different color temperatures; a plurality of LED lighting circuits that independently light the LEDs for each color temperature of emitted light; and a control unit that selects a first control changing illuminance of the LEDs as a whole by controlling the lighting of the LEDs and a second control changing the colors of light of the LEDs as a whole by controlling the lighting of the LEDs, and corrects an illuminance difference generated before and after the second control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.