Patent ID: 8694287
Filing Date: 2014-04-08
Classification: F21V,F21Y

Abstract:
1. A method of making an optical system including at least one light source and an optics subjected to aging as a result of exposure to said at least one light source, wherein the method comprises the steps of: defining, using a computing system, an aging model for said optics; defining, using the computing system, a thermal model for said at least one light source, wherein said thermal model is a spatial function representative of a temperature generated by said at least one light source; defining a distance of said optics from said at least one light source as a function of said aging model and said thermal model to ensure a given lifetime for said optics, wherein said aging model defines a threshold temperature not to be exceeded by a material of said optics to ensure a given lifetime for said optics; and positioning said at least one light source away from said optics at least the defined distance and so that light from said at least one light source passes through said optics.