摘要
分析了空间双波段成像光谱仪光学系统的光学特性 ,提出利用光学材料间焦距位移系数的互补性 ,实现光学系统消热差、消色差设计方法 ,建立了一组既消热差又消色差的方程组 给出了利用这种方法设计的视场角 10° ,焦距 10 0mm ,F数为 1.98,温度范围在 - 2 0℃～ 70℃ ,工作波长为 3～ 5 μm和 8～ 11μm具有 10 0 %冷光栏效应的双波段消热差、消色差光学系统 ,分析了系统各波段传递函数。
Optical features of optical system of a dual-band imaging spectrometer is analyzed. Based on the mutual compensation of optical materials focal plane shift constant, the equations are formulated for athermalization of optical system. A design example of a three lenses optical system with two materials operating in the 3~5 μm and 8~11 μm wavelength bands with 100% cold shield efficiency, 10° field of view, 100 mm focal length, 1.98 F number is designed, associated with high optical quality in large working temperature range -20~70°C. The defocus, wavefront error and modulation transfer function (MTF) of optical system are analyzed.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2005年第1期50-54,共5页
Acta Photonica Sinica
基金
国家自然科学基金资助项目 (6 0 2 770 2 1)
