A Study on Peripheral Visibility under Different Headlamp Low-beam Pattern

概要

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In this article peripheral visibility under the condition of three types of headlamps' low-beam pattern was compared with the Two-Alternative Forced-Choice (2AFC) method. The three headlamps used in this night-time field study were headlamp No. 1: Parabolic-HID, Headlamp No. 2: Projector-HID and Headlamp No. 3: Parabolic-Halogen. The results show that HID headlamps are better for the detection of pedestrian in peripheral than halogen headlamps because of the higher light output, higher color temperature, brighter foreground and wider spread of light. Some suggestion about criteria of the automobile headlight distribution for Chinese traffic condition was also discussed.
社団法人照明学会の論文