R-C系统外遮光罩挡光环的程序化设计及锥状内遮光罩的改进

高郭鹏, 熊望娥, 甘玉泉, 刘阳

高郭鹏, 熊望娥, 甘玉泉, 刘阳. R-C系统外遮光罩挡光环的程序化设计及锥状内遮光罩的改进[J]. 应用光学, 2009, 30(4): 575-579.
引用本文: 高郭鹏, 熊望娥, 甘玉泉, 刘阳. R-C系统外遮光罩挡光环的程序化设计及锥状内遮光罩的改进[J]. 应用光学, 2009, 30(4): 575-579.
GAO Guo-peng, XIONG Wang-e, GAN Yu-quan, LIU Yang. Program design of outer baffle vanes and improvement ofconical inner baffle in R-C system[J]. Journal of Applied Optics, 2009, 30(4): 575-579.
Citation: GAO Guo-peng, XIONG Wang-e, GAN Yu-quan, LIU Yang. Program design of outer baffle vanes and improvement ofconical inner baffle in R-C system[J]. Journal of Applied Optics, 2009, 30(4): 575-579.

R-C系统外遮光罩挡光环的程序化设计及锥状内遮光罩的改进

详细信息
    通讯作者:

    高郭鹏(1983-),男,陕西渭南人,硕士研究生,主要从事空间光学系统的杂散光抑制的研究。

  • 中图分类号: O439

Program design of outer baffle vanes and improvement ofconical inner baffle in R-C system

  • 摘要: 基于几何作图法推导出R-C系统外遮光罩内挡光环顶点的坐标公式,利用C语言编程实现程序化设计挡光环。在中心遮光比确定的情况下,推导出内遮光罩的顶点坐标公式,并将通常使用的主镜一级锥状遮光罩改进为二级锥状遮光罩,以高速摄影系统的R-C型折反式主物镜为例,对其主镜和次镜内遮光罩进行设计,并给出设计结果。当轴角为70,遮光罩为二级和一级时,到达像面的杂散光照度分别为1.082310-12W/m2和1.661410-10W/m2,相差二个数量级,证明改进的二级遮光罩优于一级遮光罩,能有效抑制杂散光。最后,设计了主、次镜间镜筒内壁上等高挡光环,进一步抑制了R-C系统的杂散光。
    Abstract: The vertex coordinate formulas for outer baffle vanes of R-C system are deduced based on geometrography, and the vanes are designed with Clanguage program. The vertex coordinate formulas of inner baffle are also deduced after assuring the central obscuration ratio, and then the common one-grade conical baffle is improved into the two-grade one. The correctness of baffle design is proved by an example and its simulated analysis, meanwhile an effective way of suppressing the stray light is provided. Finally, the same-height vanes in drawtube between primary and secondary mirrors are designed for further suppressing the stray light in R-C system.
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出版历程
  • 刊出日期:  2009-07-09

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