SYSTEM AND METHOD FOR EVALUATING THE EFFICIENCY OF CIRCADIAN-EFFECTIVE LUMINAIRES
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United States of America Patent
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Dec 7, 2023
app pub date -
Jun 1, 2023
filing date -
Jun 1, 2022
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Abstract
A system and method evaluate the efficiency of circadian-effective luminaires. Such circadian-effective luminaires affect the master biological clock in the brain, which regulates the daily timings of behavioral activities and physiological functions. Disruption of circadian rhythms can lead to poor performance and poor health, while consistent exposure to bright days and dim nights is necessary for circadian entrainment, and thus for good sleep and good health. The system and method provide a standard test for assessing the efficiency of luminaires for providing circadian-effective light to building occupants. The system and method measure and quantify luminaire efficiency based on the electrical watts needed, termed SOWatt, to reach a circadian stimulus (CS) criterion of 0.3 at the eyes of a standard observer (SO). The system and method can be applied to ceiling mounted, accent, and table-top luminaires.
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