Method and system for controlling lighting

Details Method and system for controlling lighting Method and system for controlling lighting

2005-08-03

2009-10-06

Vo, Tuyet (Department: 2821)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S539260, C315S149000, C315S224000, C315S312000, C315S291000

Reexamination Certificate

active

07598859

ABSTRACT:
A method and system for controlling lighting in a space reduces energy consumption of the light sources by changing at least one of the color rendering index (CRI) and the correlated color temperature (CCT) while maintaining illumination levels. Preferably, the method and system sense movement of people in the space relative to light sources that light the space, and automatically and individually adjust plural solid state lighting devices that form each of the respective light sources to a first lighting condition when people are in a first position, wherein the lamps respectively emit light of a first illumination level and a first CRI at a first electrical power level, and to a second lighting condition when people are in a second position, wherein the light sources respectively emit light of the first illumination level and a smaller CRI than the first CRI and at a lower electrical power level than the first electrical power level.

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