Compensated light sensor system

H - Electricity – 05 – B

Patent

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315/42

H05B 37/02 (2006.01) H05B 37/04 (2006.01) H05B 39/04 (2006.01) H05B 41/36 (2006.01)

Patent

CA 1253198

ABSTRACT OF THE DISCLOSURE A light sensing compensation system is provided for controlling the level of light at a workplane so that the ratio of the light at the ceiling where the sensor means is located to the level of controlled light at the workplane is maintained substantially constant as daylight entering the room varies.

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