Patent ID: 8382335
Filing Date: 2013-02-26
Classification: F21K,F21V,F21Y,H01L,Y10S

Abstract:
1. A set of light emitting diode modules, wherein each of the light emitting diode modules in the set comprises: at least one light emitting diode, wherein each at least one light emitting diode of each light emitting diode module of the set of light emitting diode modules produces a spectral power distribution with a centroid wavelength, and wherein the centroid wavelength of each at least one light emitting diode of each light emitting diode module of the set differs by 1.0 nanometers or more; a light mixing chamber surrounding the at least one light emitting diode and having an output port, the light mixing chamber is at least partially formed by a first selectable component with a first type of wavelength converting material and a second selectable component with a second type of wavelength converting material, the first type of wavelength converting material on the first selectable component of each light emitting diode module has a different wavelength converting characteristic and the second type of wavelength converting material on the second selectable component of each light emitting diode module has a different wavelength converting characteristic the first selectable component and the second selectable component being located in different areas of the light mixing chamber so that the first selectable component and the second selectable component are each in a direct optical path of the light emitted by the at least one light emitting diode; wherein for each light emitting diode module, the wavelength converting characteristic of the first type of wavelength converting material on the first selectable component and the wavelength converting characteristic of the second type of wavelength converting material on the second selectable component alters the spectral power distribution of the light produced by the at least one light emitting diode so that each of the light emitting diode modules in the set has the same color point within a degree of departure Δu′v′ of 0.007 from a target color point in a CIE 1976 u′v′ diagram.