Construction of environment for the evaluation of the subjectivity of brightness suitable for indoor activities

Many studies have been made on side-window lighting systems which use motorized blinds to effectively utilize favorable effects of sunlight. Methods for quantitative evaluation of the subjectivity of optimum brightness in residences have also been explored. However, conventional side-window lighting or lighting control systems using evaluation indices are often unsuitable for household use. We propose a side-window lighting system for stable optimization of brightness required for at-home studying and relaxing. We also present an environment for evaluating the subjectivity of optimum brightness for at-home studying and relaxing.