Patent ID: 9125257
Filing Date: 2015-09-01
Classification: H05B,Y02B

Abstract:
1. A system to generate artificial sunlight with spectral characteristics that resemble natural sunlight, the system comprising: a plurality of lighting element channels selectively operable to generate broad spectrum white light of color temperatures from 1800K to 6500K; at least two light sensors that detect a composite light emitted from the plurality of lighting element channels and generate respective signals representative of the detected composite light; and a controller communicatively coupled to the at least two light sensors to receive the respective signals representative of the detected composite light and communicatively coupled to the plurality of lighting element channels to automatically provide respective drive signals that are based at least in part on a color match algorithm and that automatically vary a brightness level and a color level for respective ones of the plurality of lighting element channels to produce the composite light along at least a portion of a daylight locus.