Influence of Light Sources Color on Tunnel Lighting |
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| Authors: | Liu Yingying Weng Ji Chen Jianzhong and Chen Zhonglin |
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| Institution: | College of Architecture and Urban Planning; Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University, Chongqing 400045,P. R. China;;College of Architecture and Urban Planning; Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University, Chongqing 400045,P. R. China;;China Merchants Chongqing Communications Research and Design Institute, Chongqing 400067,P. R. China;College of Architecture and Urban Planning; Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University, Chongqing 400045,P. R. China; |
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| Abstract: | Five color temperature LEDs were compared to traditional light sources (HPS and MH) under three lighting levels and negative contrasts to study the effect of light sources color on tunnel lighting. Through the experiment of reaction times, the relation between light sources color and reaction times, and the relation between light sources color and pupil size were studied, respectively. The experiment result shows that visual performance and cirtopic with high color temperature LED are the most significant under high lighting level. The visual performance and cirtopic with middle color temperature LED are the most significant under mesopic lighting level. It is shown that comprehensive influence of light sources color on visual performance and cirtopic must be considered for choosing appropriate light sources in different sections of tunnel lighting. |
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| Keywords: | light source tunnel lighting reaction times pupil size |
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