Patent ID: 8919975

Claim:
A lighting device comprising: a first plurality of solid-state light emitters wherein each of the first plurality of solid-state light emitters is associated with a wavelength conversion material; a second plurality of solid-state light emitters; and current control circuitry adapted to provide current to the first and second pluralities of solid-state light emitters such that: a peak wavelength of excitation light emitted by the first plurality of solid-state light emitters is from 410 nm to 490 nm; a dominant wavelength of light emitted by the wavelength conversion material is from 535 nm to 590 nm when excited by the excitation light emitted by the first plurality of solid-state light emitters; and a dominant wavelength of light emitted by the second plurality of solid-state light emitters is from 631 nm to 700 nm, wherein a combination of light emitted by the first and second pluralities of solid-state light emitters and the wavelength conversion material produces white light at a color point on a 1931 CIE chromaticity diagram within ten MacAdam ellipses of a black body locus.