An invention patent was granted
Recently, an invention patent applied by our company was granted, named “A white-light LED light source”, numbered ZL201210237235.3.
The invention relates to a white-light LED light source. The white-light LED light source comprises of bowl cup, blue-light LED chip arranged at the bottom of the bowl cup, yellow-green fluorescent powder and red fluorescent powder, wherein the yellow-green fluorescent powder and red fluorescent powder are arranged above the blue-light LED chip, and the yellow-green fluorescent powder is arranged above the red fluorescent powder. The white-light LED light source selects the yellow-green fluorescent powder with high luminous efficacy and a rare earth aluminate matrix, yellow-green silicate fluorescent powder and silica-based nitride red powder which are combined and matched with blue-light LED chip, and through the reasonable design of the spatial layout of fluorescent powder with different systems inside LED, the secondary absorption of yellow-green light by the nitride red fluorescent powder can be effectively overcome, and the relatively high emergent light efficiency also can be obtained simultaneously when a color rendering index is obviously promoted. A light-emitting system provided by the invention can realize white light with high luminous efficacy and a high color rendering index by adjusting the proportioning of fluorescent powder with different emission spectrums so as to meet the technical requirements of general lighting.
The invention effectively solves the shortage of the high color white LED light source in the light efficiency , and can obtain high light output efficiency .