A system for automatic regulation of daylight admitted by a window in the presence of artificial illumination produced by a high-efficiency (e.g., fluorescent-type) electric lamp. A preferred embodiment, adaptive window covering system 10, consists of an illuminance sensor 11, a conventional control...http://www.google.fr/patents/US6084231?utm_source=gb-gplus-shareBrevet US6084231 - Closed-loop, daylight-sensing, automatic window-covering system insensitive to radiant spectrum produced by gaseous-discharge lamps
Closed-loop, daylight-sensing, automatic window-covering system insensitive ...
