著者
中山 和美 乾 正雄 佐藤 仁人 國友 美希
出版者
一般社団法人 照明学会
雑誌
照明学会誌 (ISSN:00192341)
巻号頁・発行日
vol.84, no.2, pp.100-106, 2000-02-01 (Released:2011-07-19)
参考文献数
3
被引用文献数
1 2

This study was conducted to clarify the difference in visual acuity and color recognition between the darker color eyes of Japanese and the fairer color eyes of Westerners at lower illuminance. A series of experiments were carried out in an experimental room in which the illuminance level could be changed. The parameters were the illuminance on a desk and the color of the subject's eyes. Ten illuminance levels, which increased geometrically from 0.001 to 30 lx, were used. The subjects comprised two groups having different eye colors. One group was made up of Japanese, who have dark eyes, and the other Europeans and North Americans with fair eyes. At each illuminance level, after 7 minutes for adaptation, each subject's visual acuity was tested using 4 types of color Landolt rings and color discrimination was tested using 12 different-color cards. The following results were obtained.(1) For a black Landolt ring on a white background, there was very little difference between the two groups' visual acuity.(2) For a green Landolt ring on a blue background, the visual acuity of the dark-eyes group was remarkably lower than that of the fair-eyes group.(3) In the color discrimination test, at an illumination of 1 lx or lower, the dark-eyes group confused colors more than the fair-eyes group.Accordingly, the differences in visual acuity and color discrimination between the two eye-color groups were only in color discrimination at lower illuminance.
著者
佐藤 仁人 乾 正雄
出版者
一般社団法人 照明学会
雑誌
照明学会誌 (ISSN:00192341)
巻号頁・発行日
vol.77, no.6, pp.275-284, 1993-06-01 (Released:2011-07-19)
参考文献数
16
被引用文献数
1 1

In recent years, windowless office spaces have increased remarkably, while problems related to windowless roomsremain to be solved.This study was conducted to evaluate the effects of visual environment on human psychology and behavior in a windowless office space.This thesis consists of three Experiments which are stated below.In Experiment 1, using scale models, at first the psychological factor structure of the visual environment of a windowless control room, which is the typical windowless office room, are surveyed. Secondly the relationship between psychological factors and physical factors which constitute visual environment are examined.In Experiment 2, how the visual environment affect subjective appraisal and human behavior such as eye movement, task performance and behavior pattern, in windowless office spaces are disscussed, when subjects were at fundamental task in an actual sized experimental space.In Experiment 3, how visual environment and types of task affect human psychology and behavior such as subjective appraisal, task performance, behavior patterns in windowless office spaces are examined, when subjects took six types of task, which were chosen to take usual work at an office space into consideration, in the same experimental space.Summing up the results obtained above, we conclude that although the visual environment of the windowless office space have negative influence upon human psychology and behavior, they can be compensated by considering interior decoration and types of task.