LED色温对隧道暗适应过程视觉功效的影响  

Influence of LED Color Temperature on Visual Performance During the Process of Dark Adaptation in Tunnels

作　　者：康诚[1,2] 李文辉 王朝晖 李石坚[5] 黄志义[1] 吴珂[1,2] KANG Cheng;LI Wenhui;WANG Zhaohui;LI Shijian;HUANG Zhiyi;WU Ke(Key Laboratory of Offshore Geotechnics and Material of Zhejiang Province, Zhejiang University, Hangzhou 310058, Zhejiang, China;The Engineering Research Center of Oceanic Sensing Technology and Equipment, Ministry of Education, Zhejiang University, Zhoushan 316021, Zhejiang, China;Hangzhou Dajiangdong Urban Utility Management & Maintenance Co., Ltd, Hangzhou 311200, Zhejiang, China;Wenzhou Highway and Transportation Management Center, Wenzhou 325000, Zhejiang, China;College of Computer Science and Technology, Zhejiang University, Hangzhou 310007, Zhejiang, China)

机构地区：[1]浙江大学浙江省海洋岩土工程与材料重点实验室,浙江杭州310058 [2]浙江大学海洋感知技术与装备教育部工程研究中心,浙江舟山316021 [3]杭州大江东城市设施管养有限公司,浙江杭州311200 [4]温州市公路与运输管理中心,浙江温州325000 [5]浙江大学计算机科学与技术学院,浙江杭州310058

出　　处：《华南理工大学学报（自然科学版）》2021年第4期117-123,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：浙江省重点研发计划项目(2018C03029);杭州市建设科研项目(2017053);宁波市交通运输科技计划项目(202109)。

摘　　要：采用视觉功效试验,研究隧道暗适应过程中LED光源色温对瞳孔直径、瞳孔面积变化率和反应时间的影响。结果表明:人眼暗适应过程分为初期和中后期两个阶段,前者时长约2 s,瞳孔面积变化率频繁超过70%,眨眼频率高达1.7次/s;后者时长约20 s,瞳孔面积变化率在±4%,眨眼频率恢复到正常水平。在暗适应初期,LED光源色温越高,人眼瞳孔面积越小,视觉负荷更低,反应更快;而中间色温LED光源更有利于提升暗适应中后期的视觉功效。据此,提出隧道入口段和过渡段的LED光源色温推荐值。The study aims to investigate the effect of color temperature of tunnel LED light source on pupil diameter,variation ratio of pupil area and reaction time during the dark adaptation through visual performance experiments.Results show that the process of dark adaptation can be divided into two stages,namely,the early stage and the middle-late stage.The early stage lasts about 2 s,during which the variation ratio of pupil area exceeds 70%frequently and the blinking frequency rises up to 1.7 times/s.The middle-late stage lasts about 20 s,during which the variation ratio of pupil area remains in the range of±4%and blinking frequency returns to normal level.The higher color temperature of LED light source is,the smaller pupil area,lower visual load and faster reaction time is during the early stage.Intermediate color temperature gives rise to a relatively higher visual performance during the middle-late stage.Accordingly,the recommended color temperature of LED light source in threshold zone and transition zone was proposed.

关 键 词：LED 色温 暗适应过程 视觉功效 眼动特征 

分 类 号：U458.1[建筑科学—桥梁与隧道工程]