灯浮標(灯火ブイ)の見え方について

概要

論文の詳細を見る
This paper shows the result of an experimental study on apparent hue of the lightbuoy at sea. This experiment was investigated by employing the colour naming method. The colour naming method of 10 grade evaluation was adopted. Five observers with normal colour vision and visual acuity and two observers with deuteranomaly and normal visual acuity, participated in this experiments. The experiment was operated in the visinity of Tokyo port west fairway where L-1 type lightbuoys of M.S.A. (Maritime Safety Agency) are set up. The results of this experiments are shown as follows: 1. Not only before but also after sunset, it is hard to recognize both body colour and light colour of the lightbuoys. So it is suggested that strict lookout should be paid with special caution during that time. 2. When the recognition for body colour of lightbuoys was compared with that of light colour at the same distance, the red colour is more clearly recognized than the green colour in any weather condition. 3. Body colour comes to be recognized as the stable colour after the middle term of twilight (Nautical twilight). 4. On the visibility of deuteranopic observers, the following characteristics appear; a) In the daytime, they can distinguish the body colour more clearly under fine weather than under cloudy weather, but as for the recognition of green buoys, it shows that the remarkable changes depend on the weather condition. b) In the night, it seems they recognize the light with much white ingredients as if green or red colour was mixed with based white light. c) Their recognition of the colour visibility changes greatly and unstably.
社団法人日本航海学会の論文
1989-09-20

灯浮標(灯火ブイ)の見え方について

スポンサーリンク

概要

著者

関連論文

スポンサーリンク