| 近红外镜头系统的设计与装调 |
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| 引用本文： | 刘婷毓,张景旭,杨飞,明名,吕天宇.近红外镜头系统的设计与装调[J].红外与激光工程,2013,42(3):669-674. |
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| 作者姓名： | 刘婷毓 张景旭 杨飞 明名 吕天宇 |
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| 作者单位： | 1.中国科学院长春光学精密机械与物理研究所,吉林长春130033; |
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| 基金项目： | 国家自然科学基金（D41074126） |
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| 摘 要： | 为了使1.23 m 望远镜具有大视场捕获功能，进行了口径为200 mm 的近红外镜头的设计与装调工作。首先，通过光学原理确定同轴反射式光学系统。其次，通过有限元分析方法对比桁架式与圆筒式主支撑结构、三翼梁与四翼梁式次镜支撑结构在不同工况下的变形，确定桁架式三翼梁支撑结构。最后通过设计适当的次镜装调结构和选用适当的CCD 电控平移台，对系统进行装调。装调后对系统进行检测实验，检测得到系统波前误差RMS=0.106 18，PV=0.553 62（=632 nm）。检测结果表明该近红外镜头足够满足光学设计要求及成像要求。
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| 关 键 词： | 近红外系统 桁架 圆筒式 次镜支撑结构 次镜调整机构 |
| 收稿时间： | 2012-07-05 |
Design,assembly and adjustment of a near-IR camera |
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| Affiliation: | 1.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;2.University of Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | In order to achieve a large field of view for a 1.23m large telescope, a near-IR telescope was designed and assembled in this paper. Firstly, an on-axis reflected system was designed based on the optical theory. Secondly, by designing and analyzing the deformation of different support structures for the secondary mirror and the deformation of cylinder type and truss structure, the three-beam secondary mirror support structure and the truss structure were chosen. Finally, the assembly and adjustment was done by a proper secondary mirror adjusting structure and a proper CCD counter-rail. A test was done after the assembly and adjustment, with the result of RMS=0.106 18, PV=0.553 62(=632 nm). It is proved that the design of the near-IR system meets the requirements of the optical design and imaging according to the test result. |
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