Patent ID: 9368695
Filing Date: 2016-06-14
CPC Classification: F21K,F21V,F21Y,H01L

Claim Text:
1. A light-emitting system comprising: at least one LED device comprising an n-type region, a light-emitting active region, and a p-type region; and emitting a first radiation characterized by a first wavelength in a first range; at least one first wavelength conversion material optically coupled to the at least one LED device, wherein the at least one first wavelength conversion material converts a part of the first radiation to a second radiation characterized by a second wavelength in a second range from about 500 nm to about 600 nm; and at least one second wavelength conversion material optically coupled to the at least one LED device, wherein the at least one second wavelength conversion material converts a part of the first radiation to a third radiation characterized by a third wavelength in a third range from about 600 to about 700 nm, wherein the at least one LED device is characterized by an external quantum efficiency greater than 45% measured at a temperature of 25° C. and at a current density of 40 A/cm wherein a light spectrum emitted by the light-emitting system is characterized by a spectral power distribution (SPD) in which a fraction of the SPD in a fourth range from about 390 nm to about 430 nm is between 2% and 25%.