| 矢量波像差理论在无遮拦三反光学系统设计中的应用 |
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| 引用本文： | 邹刚毅,樊学武,庞志海,凤良杰,任国瑞. 矢量波像差理论在无遮拦三反光学系统设计中的应用[J]. 红外与激光工程, 2014, 43(2): 569-573 |
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| 作者姓名： | 邹刚毅 樊学武 庞志海 凤良杰 任国瑞 |
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| 作者单位： | 1.中国科学院西安光学精密机械研究所 空间光学研究室,陕西 西安 710119 |
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| 基金项目： | 国家“863”计划(Y112G81800);青年科学与基金项目(Y111B6150Z) |
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| 摘 要： | 传统的无遮拦三反射镜光学系统设计是先设计轴对称反射系统，然后通过偏光瞳、偏视场或者两者结合的方法来实现系统无遮拦设计，系统中不可避免地用到了离轴非球面反射镜。以矢量波像差理论的相关结论出发，将反射镜的倾斜作为系统的优化变量，利用轴对称非球面反射镜实现了无遮拦三反射系统的设计。分析了此种系统的设计思路及步骤，设计了焦距为1 000 mm、视场角为1020、F数为10的三反射镜光学系统，系统结构紧凑，成像质量接近衍射极限。该系统与其他无遮拦三反光学系统相比，最大的优点是系统中的非球面均为轴对称反射面，极大地降低了系统成本。
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| 关 键 词： | 光学设计 空间光学 反射系统 矢量波像差理论 无遮拦三反系统 |
| 收稿时间： | 2013-06-09 |
Design of unobscured three-mirror optical system by applying vector wavefront aberration theory |
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| Affiliation: | 1.Space Optics Laboratory,Xi'an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi'an 710119,China |
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| Abstract: | The traditional unobscured three-mirror optical system is an intrinsically rotationally symmetric optical system with an offset aperture stop, a biased input field, or both of them, so off-axis sections of rotationally symmetric aspheric parent surface are ineluctable. Using the conclusion of vector wavefront aberration theory, a new unobscured three-mirror system by tilted the rotationally symmetric aspheric mirror was presented. The design reason and step of this system was analyzed, and then a system with effective focal length of 1 000 mm, field of view of 1020 and F-number 10 was designed. The volume of system(LengthWideHeight) less than 350 mm350 mm120 mm and image qualities of the example are near diffraction limit. Compared with other unobscured three-mirror system, the most prominent advantage of this system is that using tilted rotationally symmetric aspheric mirror to achieve unobscured style, thus reducing cost of the system. |
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