抄録
Improving the lighting environment in offices leads higher levels of intellectual productivity. We constructed a system that provides the individual illuminance and color temperature preferred by workers, and we carried an experiment to clarify which illuminance and color temperature in the office were preferred. The result of this experiment show that each person's favorite lighting environment was different and it changed with their state of health and time of day. We consider that creative works improved when workers were provided with a lighting environment they preferred.
