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ID 19347
Eprint ID
19347
フルテキストURL
Thumnail 71_1785.pdf 402 KB
タイトル(別表記)
Lighting by Fluorescent Lamp The Influence of the moving colored objects upon near point
著者
望月 義夫 岡山大学医学部衛生学教室
那須 昭三 岡山大学医学部衛生学教室
黒田 健 岡山大学医学部衛生学教室
岡平 和磨 岡山大学医学部衛生学教室
村上 貞夫 岡山大学医学部衛生学教室
東原 良頴 岡山大学医学部衛生学教室
抄録
Fluorescent lamp was compared with incadescent lamp concerning the influence upon the shift of the near point after the task seeing the rotating objects with colored stripes. The apparatus is shown in Fig. 1. The drum is covered by paper with stripes of white and one of the standard colors is used by Japanese Color Institution (black, red, yellow and green). Each stripe has the width of 3 cm and an angle of 45° to its moving direction. It rotates at the speed of 60 times per minute. Each examinee has to see this object through a window of 4×5cm opened in the midst of black carton paper, from the distance of 30cm for 20minutes. During the examination he is requested to number the stripes in order to fix his attention to this visual activity. Examinees were men and women of 19-33 years old, with normal vision and without any ophthalmological defect. Mazda Daylight Fluorescent Lamp (FI-200, 20 watt) and Mazda Gas-filled Lamp (100 volt, 100 watt) were used for the examination. The near point optometer by Dr. Ishihara was used for the measurement of near point. The results were as follows: 1) In the illumination of 200 lux, the near point shifts much further in fluorescent lighting than in incadescent lighting. This is true in every color. 2) In fluorescent lighting black and red are more effective than yellow and green. In incadescent lighting no distinguishable difference can be seen among the colors. 3) The examinee feels more comfortable by the case of incadescent lighting than fluorescent lighting. Yellow is the best and green follows in his subjective feeling. From the above results, the authors conclude that incadescent lighting is better than fluorescent lighting when we are engaged in works to see moving objects.
発行日
1959-04-05
出版物タイトル
岡山医学会雑誌
出版物タイトル(別表記)
Journal of Okayama Medical Association
71巻
4-2号
出版者
岡山医学会
出版者(別表記)
Okayama Medical Association
開始ページ
1785
終了ページ
1792
ISSN
0030-1558
NCID
AN00032489
資料タイプ
学術雑誌論文
オフィシャル URL
https://www.jstage.jst.go.jp/article/joma1947/71/4-2/71_4-2_1785/_article/-char/ja/
関連URL
http://www.okayama-u.ac.jp/user/oma/
言語
Japanese
著作権者
岡山医学会
論文のバージョン
publisher
査読
有り
Eprints Journal Name
joma