基于光栅衍射原理测量手机屏幕光栅常量的居家实验  

Measuring cellphone screen grating constant under normal/grazing incidence based on grating diffraction

作　　者：许军伟 田喜敏 许坤[1] XU Jun-wei;TIAN Xi-min;XU Kun(College of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, China)

机构地区：[1]郑州航空工业管理学院材料学院,河南郑州450046

出　　处：《物理实验》2021年第7期27-31,共5页Physics Experimentation

基　　金：国家自然科学基金青年科学基金项目(No.12004347);河南省重点研发与推广专项(科技攻关)项目(No.202102310535);河南省高等学校重点科研项目(No.20B140017)。

摘　　要：基于光栅衍射原理,利用手机屏幕作为反射光栅,设计出2种测量手机屏幕光栅常量的方法,并进行了实验验证.与传统测量手机屏幕光栅常量的方法相比,该方法采取正入射/掠入射方案,有效地避免了测量入射光角度等复杂步骤,具有简单、精准、易居家操作等优点.Utilizing the cellphone screen as the reflective grating,two unprecedented schemes based on grating diffraction principles were proposed to measure the grating constants,whose feasibility were verified by experiments.Compared with the traditional measurements of the cellphone screen grating constant,new proposals adopted the normal/grazing incidence,effectively eliminating the tanglesome steps of accurately measuring the angle of incident light.Moreover,the schemes were simple,precise,easy to operate at home.

关 键 词：光栅衍射 正入射/掠入射 手机屏幕 光栅常量 

分 类 号：O436.1[机械工程—光学工程]