<原著>トンネル内照明下における見えの研究(I) : 深径覚と加齢影響の検討

概要

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Visibility of an object with regard to its depth perceptibility was studied under the illumination of a sodium lamp prevalently employed in tunnel traffics these days. A white fluorescent lamp was used as the comparison control of the illumination source. Judgement of depth perception of twenty subjects was recorded under the identical intensity of illumination of the sodium lamp and the fluorescent lamp. The mean judgement error was larger under the illumination of sodium lamp than the fluorescent lamp. It was also found that age difference had no significant effect in the difference of judgement error between both lamps. Although one must not be too hasty in concluding from this mere fact that sodium lamp illumination is directly causative of traffic accidents, its effect upon the visibility and optic response as well calls for further multi-disciplinary studies.
1983-12-25