CAJ | 학술논문

设计了一种短波红外成像光谱仪的光学系统.它采用离轴透镜来校正大视场像差,避免了采用大口径同心透镜,降低了大口径透镜获取难度和加工要求,同时校正了狭缝弯曲和畸变;采用两个离轴非球面反射镜作为准直和会聚光学元件,补偿了与波长相关的狭缝弯曲,并减小了残余像差;采用一个色散棱镜来修正非线性色散,满足了光谱分辨率要求,在棱镜背面镀反射膜,简化了结构,减轻了重量.最后给出了各个通道的光谱非线性和光谱弯曲结果.
설계료일충단파홍외성상광보의적광학계통.타채용리축투경래교정대시장상차,피면료채용대구경동심투경,강저료대구경투경획취난도화가공요구,동시교정료협봉만곡화기변;채용량개리축비구면반사경작위준직화회취광학원건,보상료여파장상관적협봉만곡,병감소료잔여상차;채용일개색산릉경래수정비선성색산,만족료광보분변솔요구,재릉경배면도반사막,간화료결구,감경료중량.최후급출료각개통도적광보비선성화광보만곡결과.
This paper gives a brief introduction about the optical structure of the shortwave infrared imaging spectrometer used in space.This system adopts an off-axis len in order to adjust large field aberration.This system avoids large diameter concenter lens and the production difficulty is decreased.Two off-axis aspheric mirrors which compensate spectral curve are used to collimate and focus beam.One prism corrects nonlinear dispersion and meets the request of spectral resolution.Reflection coating is made in the rear surface.The system is simplified and has a light Weight.Finally the result of spectral nonlinear and curve data is showed.