Light emitting device with tuned barrier

Abstract

A light source including an LED may be tuned to increase or decrease color uniformity throughout the device, such as at an edge of the light source, and/or improve contrast with less lumen loss. Tuning may include spectral tuning such as modification of the optical barrier and/or side coat surrounding the LED. The modification may include one or more of a dye, scattering particles, or luminescent material. The spectral tuning may increase output of light of a certain wavelength while decreasing output of light of another wavelength, due to increased reflection or emission of the former and increased absorption of the latter.

Dependencies are inferred from the claim text.