Design of new-style unobscured three-mirror optical system

被引：0
|
作者：
Guo Y. [1 ,2 ]
Li Y. [1 ]
Lü B. [1 ,2 ]
Bai Y. [1 ,2 ]
Sun Q. [1 ,2 ]
机构：
[1] Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an
[2] Graduate University, Chinese Academy of Sciences
来源：
Guangxue Xuebao/Acta Optica Sinica | 2010年 / 30卷 / 04期
关键词：
Folded-axis three-mirror; Off-axis three-mirror; Optical design; Reflective system;
D O I：
10.3788/AOS20103004.1144
中图分类号：
学科分类号：
摘要：
One new-style unobscured three-mirror optical system was designed, which was based on the Gregorian system. The design step of this special three-mirror optical system was analyzed, and then a system with effective focal length of 900 mm, field of view of 0.8°×0.8° and F-number of 9 was designed. Its total length is 330 mm. The image qualities of the example are near diffraction limit. The system has advantages of shorter physical size and better ability in restraining stray lights. Compare with other three-mirror optical systems, the most prominent advantage of this special three-mirror optical system is that it just uses two aspheric mirrors and one spherical, thus reducing the cost and the manufacturing difficulties a lot.
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页码：1144 / 1147
页数：3
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