Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Electric switch controlled by the radiant energy responsive...
Patent
1978-10-02
1980-06-24
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
Electric switch controlled by the radiant energy responsive...
250214AL, 307141, 315156, 315360, H05B 3702
Patent
active
042097282
ABSTRACT:
A lighting system for illuminating a given area is disclosed herein and includes a number of luminaires, each having a light source and a light sensitive device for automatically connecting the light source to a supply of power during the dark hours of the night and for automatically disconnecting the light source during the light hours of the day. This system also includes light control circuits associated with some but preferably not all of the luminaires. Each light control circuit overrides the operation of an associated light sensitive device and automatically disconnects its light source from the power supply for a predetermined period during the dark hours at a time when it is not important to provide a high degree of illumination, for example in the middle of the night.
REFERENCES:
patent: 2295894 (1942-09-01), Dewan
patent: 4008415 (1977-02-01), DeAvila-Serafin et al.
LaRoche Eugene R.
SAI Engineers, Inc.
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