Our research fields are environmental psychology and environmental engineering, focusing on visual information such as lighting and visual environment. We measure spatial lighting environment to grasp physical factors and evaluate pleasantness and other indicators to examine psychological aspects of a person experiencing the space. By considering their relationship, we can understand how people perceive the environment and which conditions make people pleasant, enabling to discover better designs. By studying problems surrounding us, our research topics have ranged from basic research, such as spatial brightness, to lighting plans of commercial facilities, improving acceptability of visual information, such as signs, and evaluation of spatial impression and its systematization.