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中国科学院 长春光学精密机械与物理研究所,吉林 长春,130033
收稿日期:2006-04-22,
修回日期:2006-12-14,
网络出版日期:2007-06-30,
纸质出版日期:2007-06-30
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康玉思, 刘伟奇, 冯 睿. Cook结构补偿镜的球面折反型望远系统[J]. 光学精密工程, 2007,15(3):303-307.
KANG Yu-si, LIU Wei-qi, FENG Rui. A refract-reflect telescope with Cooke as compensated lens[J]. Optics and precision engineering, 2007, 15(3): 303-307.
基于Cook结构补偿镜提出了一种球面折反型望远系统。该系统将传统折反结构中的非球面球面化并用基于Cook结构的补偿镜代替传统的前置大口径补偿镜。将该镜置于次镜之后
其直径减小了很多
支撑结构也变得简单易行
整个系统容易制造。系统光学性能如下:全视场为0.5°
相对孔径可以做到
F
/7
遮拦比为0.42
MTF衍射极限为0.45@50pl
设计、加工和装校后总的MTF可以做到0.40@50pl
非常接近衍射极限水平。
This paper introduces a new design about refract-reflect telescope using spheric surfaces instead of aspheric mirrors or large fore corrected lens
which lays a small Cook corrected lens behind the second mirror to compensate aberrations. This lens still achieves diffraction limit level in it's full field of 0.5° and
F
#7
obstruction ratio of 0.42 and MTF 0.45@50pl.The finished assemblage MTF is over 0.4@50pl close to diffraction limit
it is shown that this new configuration can bring up a low cost telescope.
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