The Impact of Spectral Power Distribution (SPD) of LEDs on Obstacle Detection of Pedestrians
Yang Xiu
Hao Luoxi
Lin Yi
Abstract：This paper , evidenced by indoor simulation experiments in which the subject is asked to stand at a distance of 4 m and detect the obstacles from different angles of deviation within one third of a second , probes into the influence of SPD of LEDs on the obstacle detection .The result shows when the average ground illuminances are at 5lx, 10lx and 20lx, the effect of SPD of LEDs has its statistical significance to obstacle detection .The most favorable one is the blue-rich LEDs with correlated color temperature of 6500K, which contain more blue light below 500nm, 4000K taking the second place , 2700K being the last one.Besides, the data also reveals that SPD does not affect the on-axis visual activity, but has effect on off-axis vision, which is in direct proportion to the angles for detection .
Keywords：LEDspectral power distribution ( SPD)footpathobstacle detection
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 37-42 )