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题名:
Comparative analysis of absolute methods to test rotationally asymmetric surface deviation
作者: Song, Weihong1,2; Hou, Xi1; Wu, Fan1; Zhao, Wenchuan1
出版日期: 2013
会议名称: Proceedings of SPIE: Modeling Aspects in Optical Metrology IV, 2014
会议日期: 2013
学科分类: Power spectral density
DOI: 10.1117/12.2018219
中文摘要: We have provided a comparative analysis of methods that involves multi-angle averaging, pseudo multi-angle averaging, single-rotation and variants based on the combinations. All these methods require measurement results being determined at rotational positions, serving for the interferometric measurement of rotationally asymmetric surface deviation of a specimen. Zernike coefficients and power spectral density (PSD) are computed and used for detailed comparison. The experimental results show that single-rotation method gives noticeably smoother result, thus it is limited to applications of measuring low spatial frequency deviations, taking the advantage of quick measurement time with fairly accurate rms results and potentially less influence of environment; in contrast, the result with multi-angle averaging contains more information of mid and high spatial frequency but it's time-consuming. The pseudo multi-averaging method is the concise variant with fewer measurements. Its result contains more noise errors depending on the number of rotational measurements of multi-averaging method. © 2013 SPIE.
英文摘要: We have provided a comparative analysis of methods that involves multi-angle averaging, pseudo multi-angle averaging, single-rotation and variants based on the combinations. All these methods require measurement results being determined at rotational positions, serving for the interferometric measurement of rotationally asymmetric surface deviation of a specimen. Zernike coefficients and power spectral density (PSD) are computed and used for detailed comparison. The experimental results show that single-rotation method gives noticeably smoother result, thus it is limited to applications of measuring low spatial frequency deviations, taking the advantage of quick measurement time with fairly accurate rms results and potentially less influence of environment; in contrast, the result with multi-angle averaging contains more information of mid and high spatial frequency but it's time-consuming. The pseudo multi-averaging method is the concise variant with fewer measurements. Its result contains more noise errors depending on the number of rotational measurements of multi-averaging method. © 2013 SPIE.
收录类别: Ei
语种: 英语
卷号: 8789
ISSN号: 0277786X
文章类型: 会议论文
页码: 87890Z
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7600
Appears in Collections:先光中心_会议论文

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作者单位: 1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China
2. University of Chinese Academy of Sciences, Beijing, 100039, China

Recommended Citation:
Song, Weihong,Hou, Xi,Wu, Fan,et al. Comparative analysis of absolute methods to test rotationally asymmetric surface deviation[C]. 见:Proceedings of SPIE: Modeling Aspects in Optical Metrology IV, 2014. 2013.
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