Patent ID: 9192013
Filing Date: 2015-11-17
Classification: F21K,H01L,H05B

Abstract:
1. A lighting device comprising: a first electrically activated emitter; a second electrically activated emitter; and a control circuit configured to adjust operation of the first and second electrically activated emitter to move between at least two operating states; wherein a first operating state of the at least two operating states generates a combination of light exiting the lighting device that was emitted by the first electrically activated emitter and the second electrically activated emitter that produces, in the absence of any additional light, first operating state aggregated light emissions having a first gamut area index (GAI) value; wherein a second operating state of the at least two operating states generates a combination of light exiting the lighting device that was emitted by the first electrically activated emitter and the second electrically activated emitter that produces, in the absence of any additional light, second operating state aggregated light emissions having a second GAI value; wherein the second GAI value differs from the first GAI value by at least 10%; and wherein the first operating state aggregated light emissions produce, in the absence of any additional light, emissions including a first color point, and the second operating state aggregated light emissions produce, in the absence of any additional light, emissions including a second color point, and wherein, when plotted on a CIE 1976 u′-v′ chromaticity diagram, the first color point and the second color point differ from one another by a Delta u′v′ value of no greater than 0.01.