Lee Ho-Sang, Kim Jung-Yong, Subramaniyam Murali, Park Sangho, Min Seung-Nam
a Industrial and Management Engineering , Hanyang University , Seoul , South Korea.
b Center for Medical Metrology, Division of Convergence Technology , Korea Research Institute of Standards and Science , Daejeon , South Korea.
Ergonomics. 2017 Oct;60(10):1376-1383. doi: 10.1080/00140139.2016.1251620. Epub 2016 Nov 11.
This laboratory study evaluated the effect of glare source (halogen, HID and LED) and its illumination levels (0.7, 2 and 5 lx) using a quantitative methodology. Pupil diameter and electroencephalography were measured using FaceLab and Biopac systems, respectively. The discomfort glare was assessed subjectively with Borg's CR-10 scale. Twenty healthy subjects participated. Pupil size was significantly affected by the headlamp type and illumination condition. Pupil size was smaller when exposed to the LED headlamp than other headlamps (Halogen > HID > LED). In addition, when the illumination increased, pupil size decreased (0.7 lx > 2 lx > 5 lx). Also, driver's discomfort increased when pupil size was small, and theta waves were high. This discomfort may cause reduced attention and safety of the driver. These results can be applied to design and development of headlamps. Further investigation is necessary with adopted methodology to evaluate other headlamps in different illumination conditions. Practitioner Summary: This study evaluated pupil size and electroencephalography under different glare source (halogen, HID and LED) and illumination levels (0.7, 2 and 5 lx). Driver's discomfort increased when pupil size was small, and theta waves were high. This discomfort may cause reduced attention and safety of the driver.
这项实验室研究采用定量方法评估了眩光光源（卤素灯、高强度气体放电灯和发光二极管）及其光照水平（0.7、2和5勒克斯）的影响。分别使用FaceLab和Biopac系统测量瞳孔直径和脑电图。使用博格CR-10量表对不舒适眩光进行主观评估。20名健康受试者参与了研究。瞳孔大小受前照灯类型和光照条件的显著影响。与其他前照灯相比，当暴露于发光二极管前照灯时瞳孔较小（卤素灯＞高强度气体放电灯＞发光二极管）。此外，当光照增加时，瞳孔大小减小（0.7勒克斯＞2勒克斯＞5勒克斯）。而且，当瞳孔较小时且θ波较高时，驾驶员的不适感会增加。这种不适可能会导致驾驶员注意力下降和安全性降低。这些结果可应用于前照灯的设计和开发。采用该方法进一步研究以评估不同光照条件下的其他前照灯是必要的。从业者总结：本研究评估了不同眩光光源（卤素灯、高强度气体放电灯和发光二极管）和光照水平（0.7、2和5勒克斯）下的瞳孔大小和脑电图。当瞳孔较小时且θ波较高时，驾驶员的不适感会增加。这种不适可能会导致驾驶员注意力下降和安全性降低。
