关于几种照明的视觉疲劳的实验研究

ANEXPERIMENTAL STUDY OF VISUAL FATIGUE UNDER DIFFERENT LIGHTINGS

本实验研究以眼的调节辐合时间,亮度辨别力和视觉疲劳的主观估计作指标,比较了八种不同照明条件下勾销工作所造成的视觉疲劳,得到了较一致的结果。实验者就视觉疲劳的测量问题进行了初步探讨。

Using accommodation and convergence time of the eye, brightnessdiscrimination and subjective estimations of fatigue as indicators ofvisual fatigue, this experiment compared 8 lightings at two levels oflighting power (anit, 10 nit) and 4 color temperatures of light 630nm,and white lights at 1800K, 2400K, 3000K. The following results wereobtained: 1. When the nature of lighting is under control, visual fatigue ismore marked under 2-nit lightings than under 10-nit lightings. 2. With the same level of lighting power, the visual fatigue underred lightings is more marked than that under white lightings. Thedifferences among white lightings at the three different color temperaturesare not significant. 3. The differences between the 10-nit red lighting and the 32-nitwhite lightings are also not significant. The authors have come to the following conclusions: 1. It is necessary to conduct the right kinds of tests so that theindicators used in the tests will sensitively reflect the degree of visualfatigue. 2. It is necessary to aim at high precision in the detection oflowered capacity due to fatigue.