视觉功效法及其在道路照明安全研究中的应用

基于司辰视觉理论和中间视觉理论,研究了高压钠灯和金属卤化物灯在不同亮度条件下的发光效率,进行了反应时间实验,根据实验结果计算出在中间视觉条件下金属卤化物灯对高压钠灯的亮度对比系数。结果表明,金属卤化物灯的司辰视觉发光效率是高压钠灯发光效率的3倍多;当亮度大于3 cd/m2时高压钠灯的发光效率高于金属卤化物灯,当亮度在0.01~3 cd/m2时金属卤化物灯的发光效率高于高压钠灯;在道路照明条件下,金属卤化物灯照明的反应时间效果比高压钠灯好。

Visual Efficiency and Its Application in the Research of Road Lighting Safety

In order to improve the safety of road lighting and realize energy saving of road lighting,the luminous efficiencies of high pressure sodium lamp and metal halide lamp under citopic and mesopic lighting level was studied respectively based on the theory of citopic and mesopic vision.The reaction time experiments of high pressure sodium lamp and metal halide lamp were performed.The luminance contrast coefficients of metal halide lamp to high pressure sodium lamp are thus obtained.The results suggest that luminous efficiency of metal halide lamp under citopic is triple of that of high pressure sodium lamp.The luminous efficiency of high pressure sodium lamp is higher than that of metal halide lamp when high brightness.As low brightness,luminous efficiency of metal halide lamp is higher than that of high pressure sodium lamp.The lighting effect of metal halide lamp is better than that of high pressure sodium lamp under road lighting if we consider only reaction time.