Patent ID: 9219205
Filing Date: 2015-12-22
Classification: F21K,H01L

Abstract:
1. A light emitting device comprising: a light emitting diode (LED) for emitting primary light; a secondary emitting species, optically coupled to the LED, for emitting secondary light having a wavelength different than a wavelength of the primary light; and a plurality of optically functional or modified interfaces; wherein at least one of the optically functional or modified interfaces is positioned between the secondary emitting species and an outer or external medium, wherein a plurality of the optically functional or modified interfaces are positioned between the LED and the secondary emitting species, and are separated by at least one other material or optic that is not one of the optically functional or modified interfaces, and wherein each of the optically functional or modified interfaces positioned between the LED and the secondary emitting species is at least partially transparent for the primary light and is at least partially reflective for the secondary light.