较高反射眩光对视觉判读作业绩效的距离效应

Distance Effects of Higher Reflectance Glare on Visual Task Performance

实验目的是在控制眩光亮度和面积的条件下，用正确率作为指标，研究较高反射眩光对视觉判读作业的距离效应。反射眩光中心与视标中心的距离为５ｃｍ、１０ｃｍ两个水平。实验结果表明：当视标亮度为１．５ｃｄ／ｍ２，反射眩光强度为３０ｃｄ／ｍ２时，反射眩光对视觉判读作业绩效具有显著的距离效应，反射光离判读者视线越近，被试视觉作业绩效越差。

An expeiment was conducted to investigate the distance effect of higher reflectance glare on the visual performance.The indenpendent variable was the distance of reflectance glare ranging from 5 cm to 15 cm.The luminace of visual task is 1.5cd/m 2 and the luminace of reflectance glare is 30cd/m 2.Correct Rate were analysed,The results showed that the distance effect of reflectance glare is significant.The visual performance got worst when the distance of glare changed from 15 cm to 5 cm.Thus,the distance of glare was one of the important factors affecting the visual performance.