光栅光谱仪的整体建模与分析

理论模型是研究光谱技术，开发光谱仪器的重要工具。文章提出了一种对现代光栅光谱仪进行整体建模与分析的方法。与现有方法仅局限于光学成像等局部环节不同，该方法从光谱信息传递和变换的角度将光栅光谱仪分割为光学成像、探测、重建和显示4个功能模块，分析各个模块对光谱信息的影响，建立光栅光谱仪的整体模型并导出它的传递函数。进一步，又利用它们分析了各模块对仪器整体性能的影响规律，并揭示出要获得高质量的光谱图必须增加基带响应，抑制假响应，而重建模块将是重要途径。

Global Modeling and Analyzing of Grating Spectrometers

A method for globally modeling and analyzing grating spectrometers is put forward in the present paper.Different from existing methods which are confined to parts of a spectrometer,the method takes a grating spectrometer as four functional parts,namely imaging optics,detector,reconstruction and display.Effects of each part on spectrum are considered and a global model of the spectrometer is developed,accompanied with its transfer function.With the help of the model and the transfer function,laws of each par...