分光计调节中的平面镜与望远镜分步调节法  

Plane Mirror and Telescope Stepwise Adjustment for Spectrometer Adjustment

作　　者：刘文晶[1] 金武[2] 杨文革 王得印[1] 张水合[1] LIU Wenjing;JIN Wu;YANG Wen’ge;WANG Deyin;ZHANG Shuihe(School of Materials and Energy,Lanzhou University,Lanzhou 730000,China;National Demonstration Center for Experimental Physics Education,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学材料与能源学院,甘肃兰州734000 [2]兰州大学物理学国家级实验教学示范中心,甘肃兰州730000

出　　处：《大学物理实验》2021年第6期1-3,15,共4页Physical Experiment of College

基　　金：兰州大学物理学院教育教学改革研究项目(20201111)。

摘　　要：望远镜光轴垂直于分光计主轴的调节是分光计调节实验中最容易出现问题、耗时最长的环节。大量承担光学实验教学的一线教师提出了多种改进策略,在一定程度上提高了实验效率,但仍然存在一些缺陷。通过双面平面镜旋转前后反射像分析可知,平面镜和望远镜倾斜度分步调节可使该环节更易完成。基于反射定律,借助平行光管分步调节实现了平面镜和望远镜倾斜度调节的分离,其原理和具体调节步骤分别得到分析和描述。该方法大大降低了对粗调的要求,减少了调节步骤,是一种更方便快捷的分光计调节方法。Adjusting the telescope optical axis perpendicular to the main axis of the spectrometer is the most problematic and time-consuming part of the spectrometer adjustment experiment.A large number of front-line teachers who undertake experimental teaching of optics have put forward a variety of improvement strategies,which have improved the experimental efficiency to a certain extent,but there are still some defects.By analyzing the reflection images before and after rotation of the two-sided plane mirror,it can be seen that the step adjustment of the inclination of the plane mirror and telescope can make the process easier to be completed.Based on the law of reflection,the separation of plane mirror and telescope inclination adjustment is achieved by stepwise adjustment with the help of parallel light tube,and the principle and specific adjustment steps are analyzed and described respectively.The method greatly reduces the requirement for coarse adjustment and adjustment steps,and is a more convenient and faster spectrometer adjustment method.

关 键 词：分光计 望远镜 平面镜 分步调节 

分 类 号：G642[文化科学—高等教育学]