| 一种简而易制的二圆柱面反射式摄谱仪准直畸像系统 |
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| 引用本文： | 路声东.一种简而易制的二圆柱面反射式摄谱仪准直畸像系统[J].中国天文和天体物理学报,1992(3). |
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| 作者姓名： | 路声东 |
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| 作者单位： | 中国科学院北京天文台 北京 |
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| 摘 要： | 本文是对于摄谱仪准直畸像光学系统研究的继续和深入,认真分析了Wynne的卡焦摄谱仪畸像系统的设计思想,认为可以避免像他那样将畸像系统设置在卡焦前会聚光束中(致使畸像系统变得复杂),而设置在摄谱仪准直光路中更为合理.作者与蒋世仰教授曾首次提出了准直畸像系统的概念,现在对于其中所提的反射系统的工作有所推进,寻求得到了一种结构简单、易于制作的系统.它仅由两个圆柱面构成,是一种柱面的类Mersenne系统.文中说明了在一定的条件下可以由圆柱面代替柱面Mersenne系统的抛物柱面(该系统在中已被提出过)、这种类Mersenne系统既可置于折轴摄谱仪中,亦可置于卡焦摄谱仪中,且能在大直径准直光束中起较剧烈的畸像作用,当然也具有反射系统所固有的优点——接收更宽的波段,特别在非可见光区优于透射系统.给出的算例说明该系统的准直误差极小.
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| 关 键 词： | 天文仪器 摄谱仪 |
A Very Simple and Easily Manufactured Collimated Anamorphotic System with two Cylindrical Mirrors in Spectrograph |
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| Lu Shengdong.A Very Simple and Easily Manufactured Collimated Anamorphotic System with two Cylindrical Mirrors in Spectrograph[J].Chinese Journal of Astronomy and Astrophysics,1992(3). |
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| Authors: | Lu Shengdong |
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| Abstract: | Following the work 1] , 2] , in which the author and Jiang presented for the first time the collimated anamorphotic optical systems in astronomical spectrograph, in this paper, a simple and feasible solution of the reflecting orm of anamorphotic systems-cylindrical Quasi-Mersenne System is derived by modifying the off-axis cylindrical Mersenne System introduced 2] . Fig. 1 shows its scheme. Another property of the collimated anamorphotic prism system in 2] is further developed (Fig. 2). One can utilize this property to make a continually anamorph-changeable system. It is more convenienient rhan inter changing the anamorphotic systems in spectrograph or before the slit at cassegrain focus. |
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| Keywords: | Astronomical instruments-spectrograph |
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