WHITE LIGHT SOURCE INCLUDING LED AND PHOSPHORS

Abstract: according to one embodiment, a white light source includes a combination of a light emitting diode and phosphors. one of the phosphors is at least a cerium activated yttrium aluminum garnet-based phosphor, there is no light emission spectrum peak at which a ratio of a largest maximum value to a minimum value is greater than 1.9. the largest maximum value is largest among at least one maximum value present in a wavelength range of 400 nm to 500 nm in a light emission spectrum of white light emitted from the white light source. the minimum value is adjacent to the largest maximum value in a longer wavelength side of the light emission spectrum.

Inventor(s): Tatsunori ITOGA, Ryoji TSUDA, Naotoshi MATSUDA, Yoshitaka FUNAYAMA

CPC Classification: H10H20/8513 (No explanation available)

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