Patent ID: 6234648
Filing Date: 2001-05-22
Classification: C09K,F21K,F21V,F21Y,H01L,H05B,Y02B,Y10S

Abstract:
A lighting system comprising at least two light-emitting diodes, each of said at least two light-emitting diodes emitting, in operation, visible light in a preselected wavelength range, andconversion means for converting a part of the visible light emitted by one of the at least two light-emitting diodes into visible light in a further wavelength range so as to optimize the color rendition of the lighting system;wherein the at least two light-emitting diodes comprise at least a blue light-emitting diode and at least a red light-emitting diode; andwherein the conversion means include a luminescent material for converting a portion of the light emitted by the blue light-emitting diode into green light.