Patent ID: 6118113
Filing Date: 2000-09-12
Classification: G01J

Abstract:
A system for detecting, controlling and measuring the luminance and optimizing the luminance distribution created by a light source projected onto a surface having a center and edges, comprising:means to repeatedly detect values of luminance generated by the light source at a plurality of spaced apart locations on the surface, including the center and the edges;means connected to said detecting means to analyze and capture said detected values of the luminance at each of said plurality of locations to obtain an average value for the total luminance on the surface; an average value for the total luminance at the center of the surface; and the average value of the luminance at the edges, during each of said detections, whereby said analyzing means manipulates, compares and stores said average values during each detection in order to determine a reference value for the luminance distribution on the surface during each detection;means for evaluating and comparing said reference values for each detection to previous reference values to determine a peak reference valuemeans for generating control signals to control the light source in response to the changes in said detected reference values until said peak reference value is obtained such that optimal luminance distribution on the surface is attained.