System to optimize artificial lighting levels with increasing da

Details System to optimize artificial lighting levels with increasing da System to optimize artificial lighting levels with increasing da

1995-11-13

1997-07-15

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

315150, 160 5, H01J 4014

Patent

active

056486561

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.

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"Interior Lighting" De Boer en Fischer, Second Edition, Philips Technical Library, Kluwer Technische Boeken, Deventer-Antwerpen 1981, pp. 60-63.

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