Patent ID: 6357889
Filing Date: 2002-03-19
Classification: F21K,F21V,F21Y,H01L,H05B

Abstract:
A light source comprising:a first light emitting component which emits light at a first wavelength; a second light emitting component which emits light at a second wavelength different from that of the first wavelength; and phosphors positioned to receive the light emitted by the first and second light emitting components, the phosphors including: a first phosphor which absorbs a part of the light from the first light emitting component and emits light of a third wavelength, and a second phosphor which absorbs a part of the light from the second light emitting component and emits light of a fourth wavelength, the second phosphor being excited relatively less by light of the first wavelength than by light of the second wavelength, such that when power supplied to at least one of the first and second light emitting components is varied, the color of light emitted by the light source is changed.