Illuminating apparatus and control method for keeping a constant total brightness of ambient light and light produced by the illuminating apparatus
US9220153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2013 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Apr 27, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminating apparatus and control method is adapted to keep a constant total brightness of the ambient light and light produced by the illuminating apparatus. The illuminating apparatus has a control module storing an objective brightness and detect the ambient brightness through an optical sensor. The control module turns on a lamp according to a comparison result of the objective brightness and the ambient brightness. Hence, a total brightness of the lamp's brightness and the ambient brightness is adjustable to be equally bright as the objective brightness. The illuminating apparatus of the invention does not provide excessive brightness and accordingly conserves electric power energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.