无成像镜全反射傅里叶变换成像结构光谱检测的机理

Mechanism of non-imaging lens' all-reflection Fourier transform imaging structure spectrometer

全反射傅里叶变换成像光谱仪在航空航天遥感等领域具有重要的应用。专门设置的柱面镜和准直系统,使得光路结构复杂,不仅增加了成像光谱议光学设计和安装调试、维护的难度,同时也增加了成像光谱议的重量和光能的损耗。提出了一种无成像镜实现成像光谱检测的结构,对其检测机理进行了研究。对波长632.8 nm、940 nm和3000 nm进行光谱检测的仿真实验表明,其光谱测量误差小于1%。

All-reflection Fourier transform imaging spectrometer has important application in the fields of aerospace remote sensing etc. The specifical set of the cylindrical lens and collimation system causes the optical structure sophisticated and difficult in design, installation and maintenance. A structure without imaging lens was proposed to achieve the imaging, spectral detection, which shows the feasibility of achieving imaging spectral detection. The spectral detection simulation experiments of wavelength 632.8 nm, 940 nm and 3000 nm show that it＇s deviation of spectral measurement is less than 1%.