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All-reflective, wide-field-of-view, inverse-telephoto optical system with external posterior aperture stop and long back focal length

机译:具有外部后孔径光阑和长后焦距的全反射,宽视场,反望远光学系统

摘要

An imaging optical system includes a set of mirrors including at least three mirrors on a beam path. Only a last mirror on the beam path has a positive optical power and all other mirrors have negative optical power. The sum of the optical powers of the mirrors is zero. An external posterior aperture stop is on the beam path between the last mirror and the image plane. A back focal length of the optical system is equal to or greater than an effective focal length of the optical system. The field of view is large, and typically at least 30-40 degrees in one plane.
机译:成像光学系统包括一组镜,该镜在光束路径上包括至少三个镜。光路上只有最后一个反射镜具有正光焦度,所有其他反射镜具有负光焦度。反射镜的光功率之和为零。外部后孔径光阑在最后一个反射镜和像平面之间的光路上。光学系统的后焦距等于或大于光学系统的有效焦距。视野很大,通常在一个平面上至少30-40度。

著录项

  • 公开/公告号US7703932B2

    专利类型

  • 公开/公告日2010-04-27

    原文格式PDF

  • 申请/专利权人 LACY G. COOK;

    申请/专利号US20070796637

  • 发明设计人 LACY G. COOK;

    申请日2007-04-27

  • 分类号G02B5/10;

  • 国家 US

  • 入库时间 2022-08-21 18:49:10

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