Patent ID: 9711688
Date: 2017-07-18
CPC Classifications: H01L

Claim:
1. A light emitting device comprising: alight emitting element that emits light; a wavelength conversion element disposed over the light emitting element that receives the light emitted from the light emitting element and converts at least some of the light to light of a different wavelength; and a dielectric filter comprising a layer of material comprising dielectric platelets disposed over the wavelength conversion element that reflects at least 10% of the light that is emitted from the light emitting element at angles of incidence within +/−20 degrees of normal to the surface of the filter and reflects less than 10% of the light that is emitted from the light emitting element at angles of incidence at least 60 degrees from normal to the surface of the filter, the dielectric filter providing a variance in correlated color temperature (CCT) of less than 150 degrees at angles between −60° and +60° relative to the normal to the surface of the filter.