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ID 42873
フルテキストURL
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タイトル(別表記)
Artificial Illumination by Fluorescent Lamps Clinical Part I Effect of Fluorescent Lamps upon the Speed of Seeing
著者
桑原 進 岡山大学医学部衛生学教室
抄録
I made various experiment to know which is better artificial light-source, incandescent lamps or fluorescent lamps, from the viewpoint of eye-hygiene and illumination engineering. In this part, experiments were made with colored and uncolored test-charts in the effort to resolve the matter from the point of speed of seeing, and the following conclusion was reached. (1) There is a stright line relation between speed of seeing and logarithm of intensity of illumination, and the relation appears nearly same with each light-sources. (2) Speed of seeing increases as the intensity of illumination increases, and the rate of increase is great in low intensity of illumination and small in high. But the relation seems to differ slightly with the light-source and test-charts. (3) Speed of seeing varies with the luminosity-contrast, and in general, high speed of seeing is obtained in high luminosity-contrast. But this relation slightly varies with light-sources and the intensity of illumination. (4) Speed of seeing, throughout each test-chart and intensity of illumination, is highest with de luxe daylight fluorescent lamp, and daylight fluorescent lamp, de luxe white fluorescent lamp, white fluorescent lamp, incandescent lamp follow in the order. (5) So from the view-point of speed of seeing, it is considered that fluorescent lamp, especially de luxe daylight fluorescent lamp is superior artificial light to incandescent lamps in visual tasks. (6) From the view-point of speed of seeing, the required intensity of illumination in reading, if colored pages included, is considered to be 300 H. Lux at the minimum.
発行日
1955-12-31
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
67巻
7-12号
出版者
岡山医学会
出版者(別表記)
Okayama Medical Association
開始ページ
1365
終了ページ
1375
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/joma1947/67/7-12/67_7-12_1365/_article/-char/ja/
関連URL
http://www.okayama-u.ac.jp/user/oma/
言語
Japanese
著作権者
Copyright© 岡山医学会
論文のバージョン
publisher
査読
有り
Eprints Journal Name
joma