介绍了大口径、宽光谱、折射式平行光管物镜的设计理论.结合项目设计实例:工作波长范围400～1100 nm,焦距2000 mm,相对口径1/10的折射式平行光管系统,论述了光学设计初期玻璃材料选取、初始结构选取与光焦度分配等问题.利用修正的相对部分色散P与阿贝数V建立复消色差方程组求解初始结构,使用Zemax软件优化设计出在全谱段范围内复消色差的平行光管系统.最后,给出Zemax软件分析的像差结果,系统中心视场内的点列图优于5 μm,中心波长波像差优于1/60λ,焦距色偏移量为0.33 mm,其余像差均在设计指标之内.
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