Search

This paper proposes a lighting system that maintains color temperature of natural light by reflecting the changes of external incoming light. For that, characteristics of indoor lighting environment are measured and experimental environment to control the light is constructed. The color temperature of the natural light by solar terms are derived by analyzing measured natural light database. After that, color temperatures from various points inside the room are measured and LED lighting is controlled by linking it with the measured color temperature data. The results indicated that the lighting system that adaptably reproduce the color temperature of natural light even if external incoming light is changed. The color temperature changes of the indoor lighting environment are measured and analyzed before and after implementing the proposed system to validate the performance of the proposed lighting system that maintains color temperature of natural light.