一种C-T结构改进型光谱仪的光路结构设计  

Optical path structure design of a C-T structure improved spectrometer

作　　者：刘彪 张敏 李东波[1] Liu Biao;Zhang Min;Li Dongbo(School of Mechanical Engineering, Nanjing Universityof Science and Technology, Jiangsu Nanjing, 210094, China;Nanjing Bositu Intelligent Technology Co., Ltd., Jiangsu Nanjing, 211100, China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]南京波思途智能科技股份有限公司,江苏南京211100

出　　处：《机械设计与制造工程》2022年第2期15-20,共6页Machine Design and Manufacturing Engineering

摘　　要：针对光纤光谱仪传统的Czerny-Turner结构存在性能不稳定、调节效率低的问题,提出了用1面反射镜来同时充当准直镜和聚焦镜的新光路结构,并以200~1000 nm为工作波段、分辨率不低于1.5 nm为初始条件,结合零阶和一阶消像散条件及消彗差条件,推导出了对称交叉型C-T结构的一阶消散条件;随后使用Zemax对设计的光路结构进行了仿真分析和优化,并根据优化结果完成了相应的机械结构设计。对优化后的光路结构进行了稳定性、分辨率、波长工作范围测试,结果显示,实现了工作波段在200~1000 nm、分辨率1.5 nm、稳定性有所提高的设计要求。In view of the unstable performance and low adjustment efficiency of the traditional Czerny-Turner structure,a new optical path structure that uses a mirror to act as a collimator and focusing mirror at the same time is proposed,and the working wavelength is 200~1000 nm,the initial condition is that the resolution is not less than 1.5 nm.Combining the zero-order and first-order astigmatism conditions and coma aberration conditions,the first-order dissipation conditions of the symmetrical cross-type C-T structure are deduced;then the design optical path structure is simulated and analyzed using zemax;finally completed the corresponding mechanical structure design according to the optimization results,tested the stability and resolution and wavelength range,and the design requirements of working wavelength band at 200~1000 nm,resolution at 1.5 nm,and stability improved are realized.

关 键 词：光谱仪 C-T结构 Zemax仿真优化 结构设计 

分 类 号：TH744[机械工程—光学工程]