In our experiments, inform the difference of the light distribution of luminaire types, the distribution of light in a direction different by Lighting Type Louver, the distribution of light in the side is unstable by it depend on angle ‘‘C’’. Thehigher thevalue ofthedistributionisreduced, which is different from the luminaire types Primatic by the angle C increases the value of the distribution of light in the side there. the increase is consistent with places like the lighting of Industrial light and the light distribution in the side does not depend on the angle of view is that the C. How much is the value of light is constant for a place to reflect light from the luminaire.