Patent ID: 8845380
Filing Date: 2014-09-30
Classification: F21K,F21V,F21Y,G01J,H01J,H05B

Abstract:
1. A method comprising: measuring a first color of light emitted from an assembled LED based illumination device that includes an amount of a first wavelength converting material and an amount of a second wavelength converting material; determining a material modification plan based at least in part on the first color of light that includes a modification of the amount of the first wavelength converting material and a modification of the amount of the second wavelength converting material, wherein the assembled LED based illumination device, modified in accordance with the material modification plan, emits a second color of light within a predetermined tolerance of a target color point; and modifying the amount of the first wavelength converting material and the amount of the second wavelength converting material of the assembled LED based illumination device in accordance with the material modification plan.