Patent ID: 8506114

Claim:
A lighting device comprising: a first light source which, if illuminated, emits white light at a first color point; a first filter which, if said white light emitted from said first light source is directed toward said first filter, would filter at least some blue light from said white light to form modified light at a second color point which is different from the first color point; and a second light source which, if illuminated, emits light of at least one color selected from among the group consisting of red light and reddish-orange light, wherein a mixture of said modified light and light emitted from said second light source would produce mixed light which is white light having x, y coordinates on a 1931 CIE Chromaticity Diagram which define a point which is within ten MacAdam ellipses of at least one point on a 1931 CIE Chromaticity Diagram blackbody locus.