Foley & Lardner
White light illumination system with improved color output
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&#8722;x&#8722;zGdxCez)3Al5O12, where 0.7>x>0.4 and 0.1>z>0.
The General Electric Company
H H C H H Y
H01L H01L C09K H01L H01L Y02B
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Holly Ann Anil Raj Alok Mani
Comanzo Duggal Srivastava