为了克服光栅光谱仪分辨率低、像差较大、体积大的缺点,根据光谱仪工作原理和几何光学像差理论,设计了一种光谱范围为350～450 nm的Czerny-Turner光谱仪光学系统.计算了光学系统各光学元件的特征参量和系统结构参量.运用光学设计软件Zemax对系统进行光线追迹与优化设计,并对设计结果进行分析.理论和实验结果均表明,该系统在350～450 nm光谱范围内分辨率小于0.1 nm,系统体积约为105×105×20 mm3,整个光学系统具有结构简单、体积小、分辨率高、稳定性好等优点.

To overcome the problems of the present grating spectrometer, such as low resolution, large aberration, and large size, a kind of Czerny-Turner spectrometer optical system whose effective wavelength range is from 350 nm to 450 nm was designed based on the working princle spectrometers and the aberration theory. Parameters of the optical elements and structure were calculated. The ray tracing, simulation and optimization for the optical system were carried out with optical design Zemax software. The theoretical and experimental results demonstrate that the optical system can operate in 350～450 nm waveband with resolution less than 0.1 nm. The optical system size was 105mm×105 mm×20 mm, it is characterized by simple structure, small size, high spectral resolution, and good stability.