Patent ID: 7520634
Filing Date: 2009-04-21
Classification: F21K,F21V,F21W,F21Y,H05B,Y02B,Y10S

Abstract:
1. An apparatus, comprising: at least one first LED to generate first radiation having a first spectrum; at least one second LED to generate second radiation having a second spectrum different than the first spectrum; at least one controller to control at least one of the first radiation and the second radiation so as to control at least a color temperature of visible radiation emanating from the apparatus; and at least one sensor to monitor at least one characteristic of sample radiation and provide at least one sensor signal to the at least one controller, wherein: the at least one controller is configured to control at least the color temperature of the visible radiation based at least in part on the at least one sensor signal; the sample radiation includes at least one ambient illumination condition; and the at least one controller is configured to control at least the color temperature of the visible radiation emanating from the apparatus based at least in part on the at least one ambient illumination condition.