Patent ID: 9318669
Filing Date: 2016-04-19
CPC Classification: C09K,G01J,H01L

Claim Text:
1. A light emitting device, comprising: a solid state lighting source; a first phosphor composition that is configured to emit first emitted light at a first emission wavelength; and a second phosphor composition that is configured to emit second emitted light at a second emission wavelength that is different from the first emission wavelength and that is different from a wavelength of light emitted from the solid state lighting source, the second phosphor composition including a first activator concentration that results in a first specific saturated color coefficient value and a first general saturated color coefficient value of a combined emission of the light emitted from the solid state lighting source, the first emitted light and the second emitted light, wherein the first specific saturated color coefficient value is greater than a second specific saturated color coefficient value of another device that is substantially the same as the light emitting device with the exception of having a third phosphor instead of the second phosphor, the third phosphor comprising a third phosphor composition having substantially a same composition as the second phosphor composition except the second activator concentration is greater than the first activator concentration and having a second general saturated color coefficient value that is substantially the same as the first general saturated color coefficient value.