Simple optical method for small angular displacement measurement based on the astigmatic effect

	Simple optical method for small angular displacement measurement based on the astigmatic effect
	Zheng, J. G.; Q. Wei; L. Y. Yu; M. D. Ge and T. Y. Zhang
	2016
发表期刊	Chinese Optics Letters
卷号	14 期号:3
摘要	We propose a novel small-angle measuring optical method based on the astigmatic effect of two orthogonally placed cylindrical lenses. According to the one-to-one correspondence between the laser spot shape and the angle, the angle is determined. We theoretically analyze the measuring range and demonstrate that a longer distance between the rotating axis and the optical axis leads to a smaller measuring range, but better sensitivity. Also, an associated experimental system is established and a measuring range of 0.94 mrad (cubic fit r = 0.9993) as well as a good linear range of 0.37 mrad (linear fit r = 0.9994) with a resolution of 8 mu rad is achieved.
文章类型	期刊
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57482
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zheng, J. G.,Q. Wei,L. Y. Yu,et al. Simple optical method for small angular displacement measurement based on the astigmatic effect[J]. Chinese Optics Letters,2016,14(3).
APA	Zheng, J. G.,Q. Wei,L. Y. Yu,&M. D. Ge and T. Y. Zhang.(2016).Simple optical method for small angular displacement measurement based on the astigmatic effect.Chinese Optics Letters,14(3).
MLA	Zheng, J. G.,et al."Simple optical method for small angular displacement measurement based on the astigmatic effect".Chinese Optics Letters 14.3(2016).

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