Illumination control apparatus for compensating solar light

Details Illumination control apparatus for compensating solar light Illumination control apparatus for compensating solar light

H - Electricity

05

B

315/40

H05B 41/14 (2006.01) F21S 11/00 (2006.01) H05B 37/02 (2006.01)

Patent

CA 1101485

ABSTRACT Illumination control apparatus for supplementing light from solar radiation with light from an artificial light source to compensate for periods of insufficient levels of solar light to maintain a desired illumination level within an interior space comprising an artificial light source connected to an electrical power source with switch means for selectively energizing said light source, actuator means for controlling the on-off operation of the switch means, a light sensor connected to the actuator means for controlling the actuator means in response to the illumination level of the interior space, and a limit switch carried adjacent the actuator for limiting the movement of the actuator within a predetermined range so as to prevent further movement thereof during detection of erroneous illumination conditions.

293788

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