1. An apparatus for evaluating optical properties of a three-dimensional display, the apparatus comprising: a luminance measuring unit configured to measure luminance in a radiation angle direction of a light ray radiated from a predetermined measurement point on the three-dimensional display; a luminance distribution analyzing unit configured to analyze a luminance distribution state in the radiation angle direction of the light ray based on luminance data measured by the luminance measuring unit, and to generate a luminance distribution image of the light ray, the luminance distribution image being an image that shows luminance distribution of the light ray in a region between the three-dimensional display and an observer; an interocular luminance analyzing unit configured to analyze luminance perceived between eyes of the observer based on the luminance distribution image, and to generate a stereoscopy determination image; and a stereoscopy determining unit configured to determine a certain region in the radiation angle direction in front of the three-dimensional display, as a stereoscopy possible region, based on the stereoscopy determination image.