Illumination device, illumination system, and illumination control method
US12022590B2 · kind B2 · utility
0Cited by
7References
15Claims
0Family size
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Key dates
| Filing date | Feb 19, 2021 |
| Grant date | Jun 25, 2024 |
| Priority date | — |
| Expiry date | May 20, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device includes a light emitter configured to emit illumination light and a controller configured to control the light emitter. The controller controls the illumination light such that a first decrease ratio of melanopic illuminance of illumination light during night-time illumination to melanopic illuminance of illumination light during daytime illumination is higher than a second decrease ratio of illuminance of the illumination light during the night-time illumination to illuminance of the illumination light during the daytime illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.