航行安全上からみた航海者のための視覚伝達に関する研究-IV : 複数灯火構成による航路中心灯,側端灯に関する検討

概要

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In case a navigator passes under the bridge-girder, the red margin channel light and the green center channel light fitted on the bridge-girder should be sufficiently recognized by him. In this paper the design process of a channel light consisting of plural light sources is described first, and the process, the result and the consideration of the outdoor experiment are described next. The method of both experiments is visual estimation. In these experiments the pattern and the necessary illuminance at the eye of a channel light were observed. The result is as follows: 1. The longer observation distance is, the smaller necessary illuminance at the eye is. But in case observation distance is very long, necessary luminous intensity is constant. 2. The necessary luminous intensity of one light source of which a channel light is formed is lower than that of a single light source. Furthermore, above mentioned result is discussed.
社団法人日本航海学会の論文
1978-08-25