LIGHTING ENVIRONMENT EVALUATION AND LUMINOUS FLUX CALCULATION FOR SELECTION OF CEILING LUMINAIRE

The purpose of this study is to propose a new lighting design method that enables residents to select a ceiling luminaire easily. For that purpose, we developed the function that can estimate required luminous flux to have a certain illuminance in relation to room size and to reflectance of interior surface. We also developed a conversion method from illuminance on the floor to vertical photometric value by assuming standard light distribution curve. It was shown that the proposed design method can reduce energy consumption for lighting comparing to the traditional design method.