Study on Psychophysiological Effects of Window Glare on Human Body

摘要

Window glare is a common phenomenon in current office environment, which can easily affect office efficiency, causing visual fatigue, eye discomfort and other issues. At present, there are two types of experiments in window glare study: real window environment and artificial window simulation. In this paper, the effects of window glare on human were studied by artificially simulated by LED light source, using the luminance and color temperature of window glare as variables, then use the subjective and objective human data as standard to evaluate five kinds of glare metrics, DGP, DGI, UGR, VCP, and DGI. The experiment found that the luminance of the window glare had a very significant influence on the subjective evaluation of the subjects reflected in the De Bore scale (p=0.000<;0.001). The color temperature of the window glare light source (p=0.000<;0.001) and the luminance of the window glare source (p=0.000<;0.001) all have extremely significant influence on the relative pupil size, which indicates that the relative pupil size reflects the body's obvious physiology of glare perception. When the subjective evaluation De Bore score or relative pupil size was used as a benchmark, the evaluations of the five glare indexes all had extremely significant correlations (p ≤ 0.05), and DGP shows the best performance.