基于数码相机的新型分光计及其调节方法  

A new spectrometer based on digital camera and its adjusting method

作　　者：王凤鹏[1] 李成兰 刘道莲 余良彬 李诚 肖英珍 WANG Feng-peng;LI Cheng-lan;LIU Dao-lian;YU Liang-bin;LI Cheng;XIAO Ying-zhen(School of Physics and Electronic Information,Gannan Normal University,Ganzhou,Jiangxi 341000,China)

机构地区：[1]赣南师范大学物理与电子信息学院,江西赣州341000

出　　处：《大学物理》2020年第12期36-40,共5页College Physics

基　　金：国家自然科学基金(61965002);江西省高等学校教学改革研究课题(JXJG-19-14-18);江西省重点研发计划项目(20192BBG70006);赣南师范大学大学生创新训练项目资助。

摘　　要：提出了一种利用数码相机进行观测的新型分光计方案及其调节方法,并研制了实验样机.利用数码相机替代了传统分光计中的望远镜部分,可观察并记录相关光学现象.调节分光计时,首先利用数码相机镜头对焦于无穷远作为标准进行平行光调节,然后利用反射狭缝像的位置调节载物台与旋转轴的垂直,最后以载物台为基准调节数码相机及平行光管与旋转轴垂直.对新型分光计的特性分析及实验结果表明:该新型分光计具有调节难度低、测量误差小、能同时观测多条光谱线的特点.A new scheme and adjusting method of spectrometer with digital camera are presented,and an experimental prototype is developed.The optical phenomena is observed and recorded by a digital camera instead of a telescope in a conventional spectrometer.The digital camera lens is focus to infinity for doing parallel light adjustment,the position of the slit image is used to adjust the verticality between the platform and the rotation axis,and then the digital camera and the parallel light tube are adjusted to be perpendicular to the rotation axis with the platform as a reference.The analysis and experimental results show that the new spectrometer has the characteristics of low adjustment difficulty,small measurement error and simultaneous observation of multiple spectral lines.

关 键 词：分光计 数码相机 平行光调节 垂直调节 

分 类 号：O4-33[理学—物理]