第 35 卷 第 3 期
2015 年 3 月
Vol. 35, No. 3
March, 2015
光 学 学 报
ACTA OPTICA SINICA
0322002-
大相对孔径宽视场无遮拦平场两反射镜望远物镜分
析与设计
周正平
1, 2
赵知诚
1, 2
靳阳明
1, 2
沈为民
1, 2
1
苏州大学物理与光电·能源学部 教育部现代光学技术重点实验室, 江苏 苏州 215006
2
苏州大学物理与光电·能源学部 江苏省先进光学制造技术重点实验室, 江苏 苏州 215006
摘要 根据研制宽视场大相对孔径高光谱成像仪的性能指标和应用要求,研究与设计了结构简单的凸面、凹面反射镜
组成的偏视场两反前置系统。基于高斯光学和利用杨氏公式的像散分析,在系统焦距归一化条件下,凸面反射镜顶
点曲率半径的取值区间为[2.5 mm, 3.24 mm)。给出根据指标要求确定系统初始结构参数的方法与结果。例如,优化
设计得到的偏视场无遮拦像方远心两反前置望远物镜的工作波段为 0.4~1.0 μm、相对孔径为 1/1.8、视场角为 40°。此
镜头的两块反射镜面形均为扁球型二次曲面,具有结构简单、成像性能接近衍射极限、像方远心、及相对孔径大集光
本领强、视场大且平像场的优点,可用作高空间分辨率、高光谱分辨率及高信噪比要求的成像光谱仪的前置物镜。
关键词 光学设计;无遮拦两反望远系统;大相对孔径;宽视场;像散
中图分类号 O435 文献标识码 A
doi: 10.3788/AOS201535.0322002
Analysis and Design of Unobscured Flat-Field Two-Mirror Telescopic
Objective with Wide Field of View and Large Relative Aperture
Zhou Zhengping
1, 2
Zhao Zhicheng
1, 2
Jin Yangming
1, 2
Shen Weimin
1, 2
1
Key Laboratory of Modern Optical Technologies of Education Ministry of China, College of Physics, Optoelectronics
and Energy, Soochow University, Suzhou, Jiangsu 215006, China
2
Key Laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province, College of Physics,
Optoelectronics and Energy, Soochow University, Suzhou, Jiangsu 215006, China
Abstract According to the performance and application of the hyperspectral imager with wide field of view and
large relative aperture, a simple two-mirror fore objective with biased field of view consisting of one convex and
one concave mirror is studied and designed. Based on its Gaussian optics and astigmatism analysis with Young′
s formulas and under the normalization condition with respect to the optical system′ s focal length,the vertex
curvature radius of the convex mirror should be chosen within the interval of [2.5 mm, 3.24 mm). The approach to
determine its initial structural parameters which meet with expected performance and the corresponding results
are presented. As an example, a fore two-mirror imagery telecentric objective with biased field of view for non-
obscuration is optimally designed. Its working wavelength ranges from 0.4 to 1.0 mm, and its relative aperture and
its linear field of view is respectively up to 1/1.8 and 40°. Both of mirrors are oblate ellipsoid surface with only conic
coefficient. The designed lens has many advantages of simple and compact construction,near diffraction-limited
imaging quality,imagery telecentricity, high speed and collection power,and wide and flat field of view. It will
become the ideal fore objective of imaging spectrometers with high and spectral resolution and high signal-to-noise.
Key words optical design; unobscured two-mirror telescope; large relative-aperture; wide field of view; stigmatism
OCIS codes 220.2740; 220.1010
收稿日期: 2014-08-15; 收到修改稿日期: 2014-10-09
基金项目: 国家自然科学基金(61205188)
作者简介: 周正平(1987—),男,硕士研究生,主要从事光学设计与光学仪器方面的研究。
E-mail: zhouzhengping1234@126.com
导师简介: 沈为民(1963—),男,研究员,博士生导师,主要从事光学设计、仪器光学和航天遥感技术等方面的研究。
E-mail: swm@suda.edu.cn(通信联系人)
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