Lighting design is generally assumed space illumination calculation to determine the configuration of the lighting equipment without any rays going through the window during the night.Excellent luminous environment not only have sufficient illumination sources, the allocation of uniform illumination, but also avoid glare as much as possible. The glare is a visual phenomena which people feel uncomfortable to reduce observed detail or target because of the brightness distribution or brightness range of the unfit, or the existence of extreme luminance contrast. At present the glare probl...