PROBLEM TO BE SOLVED: To provide a method for evaluating light source color angle dependency of a planar light source, capable of obtaining an evaluation result matched with human sensation.SOLUTION: The light source color angle dependency of the planar light source is evaluated by a first step which while changing an angle of a planar light source at a predetermined pitch angle, measures chromaticity and brightness of the planar light source at each angle, a second step for determining reference chromaticity, a third step for calculating a color difference between the chromaticity and the reference chromaticity at each angle, a fourth step for calculating a weighted color difference obtained by weighting the color different at each angle by the brightness, and a fifth step for outputting a sum of all weighted color differences as an evaluation value of the light source color angle dependency.
