Patent ID: 9593812
Date: 2017-03-14
CPC Classifications: F21K,F21Y,H01L,H05B

Claim:
1. A lighting device comprising: at least one primary solid state light emitter arranged to emit primary solid state light emitter emissions comprising a dominant wavelength in a range of from 430 nm to 480 nm; at least one lumiphor arranged to receive and be excited by at least a portion of emissions of the at least one primary solid state light emitter, and emit lumiphor emissions comprising a dominant wavelength in a range of from about 535 nm to about 585 nm; and at least one supplemental solid state light emitter arranged to generate supplemental solid state light emitter emissions comprising a dominant wavelength in a range of from 590 nm to 650 nm; wherein: a combination of (A) light exiting the lighting device that was emitted by the at least one primary solid state light emitter, (B) light exiting the lighting device that was emitted by the at least one lumiphor, and (C) light exiting the lighting device that was emitted by the at least one supplemental solid state light emitter would, in the absence of any additional light, produce a mixture of light having a color point on a 1931 CIE Chromaticity Diagram including x, y coordinates that define a point on or within a first polygon bounded by the following x, y coordinates: (0.38, 0.34), (0.38, 0.36), (0.40, 0.38), (0.42, 0.38), (0.44, 0.36), (0.46, 0.36), and (0.46, 0.34); the mixture of light has a color rendering index (CRI Ra) value of at least 80; and the mixture of light has a gamut area index (GAI) value in a range of from 80 to 100.