利用光杠杆测透镜的曲率半径  

Measuring the curvature radius of a lens using optical lever

作　　者：陈汝玉 孟伟婷 张贵 鲁睿 李凤仙 李文 汤俊琪 吕宪魁[1] 刘文广[1] 郑永刚[1] CHEN Ruyu;MENG Weiting;ZHANG Gui;LU Rui;LI Fengxian;LI Wen;TANG Junqi;LYU Xiankui;LIU Wenguang;ZHENG Yonggang(School of Physics and Electronic Information,Yunnan Normal University,Kunming 650500,China;Kunming Foreign Language School,Kunming 650041,China)

机构地区：[1]云南师范大学物理与电子信息学院,云南昆明650500 [2]昆明市外国语学校,云南昆明650041

出　　处：《物理实验》2024年第3期49-53,共5页Physics Experimentation

基　　金：西南地区物理学术竞赛类教育教学改革研究项目(No.SWPTJG2105);教育部高等学校大学物理课程教学指导委员会2022高等学校教学研究项目(No.DWJZW202235xn)。

摘　　要：基于光杠杆测量物体微小形变的思想,结合光杠杆与迈克耳孙干涉仪移动平台,搭建了测量透镜曲率半径的装置.利用光杠杆足尖位置和平凸透镜所在球面的几何关系,推导出曲率半径的测量公式,并测量了不同规格透镜的曲率半径.实验结果表明:使用该装置测量的曲率半径与利用牛顿环装置的测量值相近.Based on the idea of measuring micro deformation of objects with optical levers,a device for measuring the curvature radius of a lens was constructed by combining the optical lever and the Michelson interferometer mobile platform.Using the geometric relationship between the tip position of the optical lever and the spherical surface where the convex lens was located,the measurement formula of the curvature radius was derived,and the curvature radius of the lens of different specifications was measured.The measurement values of the curvature radius of the device were compared with those gotten using the Newton ring device,and the two methods were similar.

关 键 词：曲率半径 微小形变 光杠杆 迈克耳孙干涉仪 

分 类 号：O435.1[机械工程—光学工程]