くつろぎのための明るさに関する研究 : 初期順応レベルと経過時間の影響

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The purpose of this paper was to investigate how the initial adaptation level and the elapsed time affected proper illuminance for relaxation. The experiment carried out three lighting patterns which changed the placement and the shape of the lamp. Ten females aged 21 to 25 were the subjects. In the experiment the initial adaptation levels were set to 20 lx and 150 lx as defined by the horizontal illuminance in the center of the floor. The subject adjusted the illuminance to get the best relaxation situation and evaluated the degree of satisfaction after two minutes when the subject entered the evaluation room, and repeated the same adjustment and evaluation after five minutes, nine minutes, 17 minutes, and 32 minutes. In the first nine minutes, there were the remarkable changes in the illuminance for relaxation and the satisfaction but after nine minutes there weren't many changes. The proper illuminance made by the subject after 32 minutes was different depending on whether the initial adaptation level was 20 lx or it was 150 lx. The effect of the initial adaptation level was compatible with the elapsed time. Furthermore the illuminance level for relaxation obtained in this research was lower than the results of other researches. In conclusion, the initial adaptation level and the elapsed time affect the illuminance and evaluations of satisfaction and therefore it is necessary to take them into consideration when studying lighting conditions and using the investigation results for lighting design.
社団法人照明学会の論文
2005-08-01

くつろぎのための明るさに関する研究 : 初期順応レベルと経過時間の影響

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