Abstract
In the process of vehicle driving, the driver's brightness perception to the ground is not equal to the luminance of road surface due to different degree of stimulation caused by glare of street lamp. Based on brightness perception, this pupil size aims to explore the specific influence of different glare on the brightness perception, and further understand how to reduce the glare of street lamp and the luminance of road surface while maintaining the same brightness perception. However, the existing road lighting standards are still based on luminance, and the current research on brightness perception is also just limited to the division of different brightness perception levels as the measurement is very complex. In this study, the pupil size is used as a new research medium in the study of brightness perception. A linear relationship between pupil size and brightness perception can be discovered through experimental studies. Since pupil size can be measured in real time, the influence of glare on pupil can be further studied to obtain the relationship between glare and the brightness perception of the road surface, which provides a possibility for the study of maintaining the same brightness perception and reducing street lamp energy consumption
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