System to optimize artificial lighting levels with increasing daylight level
US5648656A · kind A · utility
92Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An artificial lighting system comprises a daylight sensor for sensing a level of daylight, artificial light source means for providing a level of artificial light, daylight control means for control of the level of daylight and a controller for control of the level of artificial light dependent on the sensed level of daylight. The controller decreases the level of artificial light with increasing level of daylight when the sensed daylight level is below a threshold, and reduces the amount of daylight through control of the daylight control means when the sensed daylight level is above the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.