White light illumination system with improved color output

Details White light illumination system with improved color output White light illumination system with improved color output

H - Electricity

05

B

H05B 33/12 (2006.01) H01L 33/00 (2006.01)

Patent

CA 2340968

There is provided a white light illumination system including a blue LED and a luminescent material. The system color output is improved when a line connecting the LED color coordinates and the luminescent material color coordinates approximates the Black Body Locus on the CIE chromatically diagram. The LED may have a peak emission wavelength between 470 and 500 nm. The luminescent material may be (Y1-x-z Gd x Ce z)3 A1 5O12, where 0.7 > x > 0.4 and 0.1 > z > 0.

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