摘要
首先指出了在透镜焦距测量实验中透镜的光轴未平行于导轨将影响透镜焦距测量的准确度。接着,指出了目前透镜等高共轴的调节方法无法实现透镜的光轴平行于导轨。最后,给出了一种实现透镜的光轴平行于导轨的调节方法。以正方形孔为物;在像屏上贴一张坐标纸;反复调节透镜光轴与导轨的夹角,直到通过上下、前后调节透镜可实现两次成像的像中心重合为止。这种调节方法基于两次成像的像中心重合,而不同于当前的调节方法:两次物中心的像重合。
Firstly,this paper points out that the optical axis of the lens in the experiment of measuring focal length of lens is not parallel to the guide rail,which will affect the accuracy of lens focal length measurement.Then,it is pointed out that the current adjustment method of equal height coaxial can not realize that the optical axis of the lens is parallel to the guide rail.At last,a method is presented to adjust the optical axis of the lens parallel to the guide rail.A square hole is taken as an object;a piece of coordinate paper is pasted on the image screen;the angle between the optical axis of the lens and the guide rail is repeatedly adjusted so that the center of the image can be overlapped twice by adjusting the lens up and down,and back and forth.This method is based on the image center coincidence of two images,which is different from the current method:the image coincidence of two object centers.
作者
翁存程
陈悦华
章小曼
WENG Cuncheng;CHEN Yuehua;ZHANG Xiaoman(College of Physics and Energy,Fujian Normal University,Fuzhou 350007,China;College of Photonic and Electronic Engineering,Fujian Normal University,Fuzhou 350007,China)
出处
《实验室科学》
2020年第4期53-54,57,共3页
Laboratory Science
基金
福建省自然科学基金(项目编号:2019J01268,2018J01659)
福建省教育厅科技项目(项目编号:JAT170128)
福建师范大学本科教学改革研究项目(项目编号:I201812031)。
关键词
光轴
焦距
凸透镜
optic axis
focal length
convex lens
作者简介
翁存程,硕士,副教授,主要研究方向为生物激光医学。E-mail:ccweng@fjnu.edu.cn;通讯作者:章小曼,硕士,讲师,主要研究方向为生物激光医学。E-mail:xmzhang@fjnu.edu.cn。
