Patent ID: 8896197
Filing Date: 2014-11-25
Classification: F21K,F21V,F21Y,H05B

Abstract:
1. A lighting device comprising: a first group of non-white light sources, the non-white light sources, when illuminated, emitting light having u′, v′ color coordinates which define a point which is (1) outside a first area on a 1976 CIE Chromaticity Diagram which is bounded by a first white-light boundary curve which is 0.01 u′v′ above the planckian blackbody locus and a second white-light boundary curve which is 0.01 u′v′ below the planckian blackbody locus, and line segments connecting respective left and right ends of the first white-light boundary curve and of the second white-light boundary curve, and (2) within a second area on a 1976 CIE Chromaticity Diagram which is enclosed by a first saturated light curve extending along all points representing saturated light having wavelength in the range of from about 390 nm to about 500 nm, a line segment extending from a point representing saturated light having wavelength of about 500 nm to a point representing saturated light having wavelength of about 560 nm, a second saturated light curve extending along all points representing saturated light having wavelength in the range of from about 560 nm to about 580 nm, and a line segment extending from a point representing saturated light having wavelength of about 580 nm to a point representing saturated light having wavelength of about 390 nm; and at least one supplemental light emitter having a dominant emission wavelength in the range of from about 600 nm to about 640 nm, the first group of non-white light sources comprising (1) at least a first phosphor converted solid state light emitter that comprises a first excitation source that emits light having a first dominant wavelength, and (2) at least a second phosphor converted solid state light emitter that comprises a second excitation source that emits light having a second dominant wavelength, the first dominant wavelength differing from the second dominant wavelength by at least 5 nm.