Optical design of off-axis astronomical space telescope based on freeform surfaces

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	Optical design of off-axis astronomical space telescope based on freeform surfaces
	Zhang X. ; Zhang J.-P. ; Shi G.-W. ; Wu Y.-X. ; Wang L.-J. ; Zeng F. ; Qu H.-M. ; Zhang J.-Z. ; Wu H.-B. ; Zhu Y. ; Wang C.
	2014
会议名称	International Optical Design Conference 2014, IODC 2014, June 23, 2014 - June 26, 2014
会议地点	Kohala Coast, HI, United states
英文摘要	A large-aperture, wide field-of-view, three-mirror optical system for a space borne astronomical survey telescope has been designed. The unobstructed optical system with a circular pupil has a 2 meter aperture, 1.7 deg2 FOV, and provides remarkably good imagery. Freeform surfaces and decentered/tilt surfaces are introduced to the system, which have the advantage of balancing the unsymmetrical aberrations, especially for the wide-field off-axis optical systems. The evaluation of image quality is that the value of the RMS wavefront error is 21 nm, the ellipticity is less than 6.5% in the main imaging area (about 1.1 deg2), and the maximum radius of Encircled Energy 80% (EE80) is less than 0.09arcsec. 2014 SPIE.
收录类别	EI
会议录	International Optical Design Conference 2014, IODC 2014, June 23, 2014 - June 26, 2014
会议录出版者	SPIE
会议录出版地	Kohala Coast, HI, United states
语种	英语
内容类型	会议论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/44621]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出_会议论文
推荐引用方式 GB/T 7714	Zhang X.,Zhang J.-P.,Shi G.-W.,et al. Optical design of off-axis astronomical space telescope based on freeform surfaces[C]. 见:International Optical Design Conference 2014, IODC 2014, June 23, 2014 - June 26, 2014. Kohala Coast, HI, United states.