光源闪烁对眩光评价的影响

本文分析了眩光测量过程中,光源闪烁对眩光测量结果的影响.针对光源部分的测量,分别采用了高动态模式和闪烁光源分析模式分析了在不同曝光时间对眩光测量结果标准偏差和重复性的影响.当曝光时间远小于光源的闪烁周期时,虽然可以避免眩光亮度计过曝对光源亮度测量结果的影响.但是眩光测量结果的重复性较差,无法给出准确的眩光测量结果.而当曝光时间大于光源闪烁周期时,测量结果的偏差和重复性有着极大的提高.当曝光时间达到光源闪烁周期的10倍时,可以避免光源闪烁对眩光测量结果的影响.

The influence of light flashing on glare assessment

This article analyzes the effects of light flashes during the glare measurement. For the measurement of light source part, high dynamic mode and flashing analysis mode were respectively used to analyze the influence of standard deviation and repeatability of glare measurement results at different exposure time. When the exposure time is much less than the blinking period of the light source, the influence of the Kernel-70D Glare-meter over exposure can be avoided. However, the glare measurements are less reproducible and have poor accuracy. When the exposure time is longer than the flashing period of the light source, the deviation and repeatability of measurement results are greatly improved. When the exposure time reaches 10 times the light source blinking period, the influence of the light source blinking on the glare measurement result can be avoided.