连续镜面反射中反射率变化的实验与分析  

Experiment and analysis of reflectivity variation in continuous specular reflections

作　　者：欧阳金龙[1] 周幸 王春苑[1] OUYANG Jinlong;ZHOU Xing;WANG Chunyuan(College of Architecture and Environment,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学建筑与环境学院,四川成都610065

出　　处：《实验室科学》2024年第5期27-32,共6页Laboratory Science

基　　金：四川大学实验技术立项(项目编号:SCU211259)。

摘　　要：为了探索光线连续镜面反射中光偏振的累积效应对反射率的影响以及反射率的变化规律,首先理论分析了连续镜面反射过程中光偏振的累积效应;然后,开展了一个光学实验,以测试非偏振光在5次相同入射角的连续镜面反射过程中两个正交分量上光强;最后,计算出两个分量上反射率和总反射率,并分析了这些反射率的变化规律。理论上,在连续镜面反射全过程中光线两个分量上反射率应始终保持不变,而总反射率却会随着反射次数的增多而逐渐增大;由于实验测试结果与理论值之间还存在小于3.5%的误差,建议进一步改善实验条件,以验证总反射率随反射次数增多而增大的趋势。In order to explore the influence of the cumulative effect of light polarization on reflectivity and the change rules of reflectivity in continuous specular reflections,firstly the cumulative effect of light polarization was theoretically analyzed in the whole process of continuous specular reflections;then,an optical experiment was conducted to measure the intensities of the two orthogonal components of non-polarized light in the process of continuous specular reflections with the same incident angle for 5 times;finally,the two components'and total reflectivity were calculated and the variation rules of those reflectivity were analyzed.In theory,in the whole process of continuous specular reflections,the reflectivity of the two components of light should always remain constant,while the total reflectance will gradually increase with reflection times;since there is still an error within 3.5%between the experimental results and the theoretical values,it is suggested that the experimental conditions should be improved further to verify the growth trend of the total reflectivity with reflection times.

关 键 词：光偏振 累积效应 偏振光 正交分量 反射次数 

分 类 号：TU113.1[建筑科学—建筑理论]