Light emitting devices and systems having tunable chromaticity and methods of tuning the chromaticity of light emitting devices and systems

摘要

A light emitting device package assembly includes a light emitting device package body, and first, second and third white light emitting devices on the package body, each of the first, second and third white light emitting devices emits light when energized having a chromaticity that falls within a respective one of first, second and third non-overlapping chromaticity regions in a two dimensional chromaticity space. The first, second and third chromaticity regions are spaced apart in the two dimensional chromaticity space by respective regions having at least the size of a seven step MacAdam ellipse. Related solid state luminaires and methods are also disclosed.

主权项

1. A method of forming a light emitting device package assembly, comprising:
providing a light emitting device package body; defining first, second and third non-overlapping chromaticity regions in a two dimensional chromaticity space, wherein the first, second and third chromaticity regions are spaced apart in the two dimensional chromaticity space by respective regions having at least the size of a seven step MacAdam ellipse and wherein the first and second chromaticity regions comprise white light having a correlated color temperature not greater than 3000K; providing a plurality of white light emitting devices that emit light having a chromaticity that falls within the defined chromaticity regions; selecting at least three of the plurality of white light emitting devices, wherein each of the three light emitting devices emits light from a different one of the defined chromaticity regions; and mounting the selected white light emitting devices on the light emitting device package body.