The effect of headlamps color temperature on visual performance of drivers
In this article, experiments were done in laboratory, correct detection rate and reaction time of visual task were measured under different light conditions with 3 different colour temperature (low, middle, high) at an illuminance of 30lx. Visual targets can be adjusted with 3 sizes(2, 5, 10), 3 locations (0°,left18°,right18°) and 3 colours (red, green, blue). The results of the experiments show that generally the higher colour temperature brings better visual performance especially for blue target and peripheral vision. However, the higher correctness rate needs more concentration and more reaction time. The results take the reaction time as a main parameter for the headlamp evaluation and the correctness rate as a modification parameter for evaluation to establish an evaluating method for the performance of headlamps with regard to safe driving.
headlamp reaction time detection rate colour temperature safe driving
Jiaqi Ju Zhijun Li Yandan Lin Wencheng Chen Dahua Chen
Department of Illuminating Engineering & Light Sources, Fudan University, Shanghai, China Shanghai Yarning Lighting Co, Ltd
国际会议
26th Session of the CIE(国际照明委员会（CIE）第26届大会)
北京
英文
734-737
2007-07-04（万方平台首次上网日期，不代表论文的发表时间）