The manufacturing and testing of an unrotational-symmetric SiC mirror

	The manufacturing and testing of an unrotational-symmetric SiC mirror
其他题名	论文其他题名
	Yan F.; Fan D.; Zhang B.Z.; Zhang X.J.
	2008
发表期刊	Proceedings of SPIE - The International Society for Optical Engineering
ISSN	0277786X
卷号	7064
摘要	In previous work, wavefront coding technology has been applied on an off-axis three mirror anastigmatic optical system. The secondary mirror is selected as the wavefront coded element. After redesigned the surface of secondary mirror becomes an unusual unrotational-symmetric surface with cubic term, which can not be tested by traditional null testing with compensator. For preparing for manufacturing and testing this kind of elements, a simple cubic surface whose equation is z = 3(x3 +y3)(where x, y is normalized coordinate, = 0.6328m) is polished. The final surface figure is 0.327 (PV) and 0.023/1 (RMS). The manufacture of this surface is introduced in this paper. The tilt component is subtracted to minimize the material removal. Also a non-null method is described for testing the experimental element. The deviation from a reference plane of the cubic surface is regarded as system error. In another words, the ideal cubic surface is set as the reference artificially. A special system error file for interferometer can be created so that the cubic term can be extracted during the testing process automatically. The residual error is just the departure from the ideal figure of the surface under machining by this way. The error and effective range is also presented. But the method may not be practical for the secondary mirror as wavefront coded element because the surface of that kind is convex asphere added cubic term. An improved non-null method is discussed for testing this kind of surface.
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/24507
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Yan F.,Fan D.,Zhang B.Z.,et al. The manufacturing and testing of an unrotational-symmetric SiC mirror[J]. Proceedings of SPIE - The International Society for Optical Engineering,2008,7064.
APA	Yan F.,Fan D.,Zhang B.Z.,&Zhang X.J..(2008).The manufacturing and testing of an unrotational-symmetric SiC mirror.Proceedings of SPIE - The International Society for Optical Engineering,7064.
MLA	Yan F.,et al."The manufacturing and testing of an unrotational-symmetric SiC mirror".Proceedings of SPIE - The International Society for Optical Engineering 7064(2008).

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