摘要
对拍摄光源时产生的星芒现象做出了理论解释和实验探究。基于夫琅禾费衍射理论,推导了光线通过正多边形孔后的复振幅分布,并用MATLAB对光场做傅里叶变换,得到了不同频率的光通过不同形状,不同大小的小孔后的衍射图样。并且开展了对应的实验,给出了不同频率的光线通过不同形状和大小的光圈后产生星芒的条件和规律,验证了理论分析的正确性。
It gives a theoretical explanation and an experimental study on the phenomenon of star awn when shooting the light source.Based on Fraunhofer diffraction theory,the complex amplitude distribution of light passing through regular polygon holes is derived,and the Fourier transform of the light field is made by MATLAB,the diffraction patterns of light passing through different shapes and sizes of holes with different frequencies are obtained.In addition,corresponding experiments are carried out,and the conditions and rules of producing star awn after light rays of different frequencies passed through apertures of different shapes and sizes are given,which verifies the correctness of the theoretical analysis.
作者
辛秀
咸夫正
孙尚倩
韩广兵
徐建强
XIN Xiu;XIAN Fuzheng;SUN Shangqian;HAN Guangbing;XU Jianqiang(School of Physics,Shandong University,Jinan 250100,China)
出处
《大学物理实验》
2021年第1期39-43,共5页
Physical Experiment of College
关键词
正多边形孔夫琅禾费衍射
星芒
拍摄光源
数值计算
Fraunhofer diffraction of regular polygon aperture
starburst light
shooting light source
numerical calculation
