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Proceedings Article

Testing large aspheric surfaces with complementary annular subaperture interferometric method

[+] Author Affiliations
Xi Hou, Baiping Lei

Institute of Optics and Electronics (China) and Graduate School of the Chinese Academy of Sciences (China)

Fan Wu, Bin Fan, Qiang Chen

Institute of Optics and Electronics (China)

Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70183K (July 14, 2008); doi:10.1117/12.786398
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From Conference Volume 7018

  • Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation
  • Eli Atad-Ettedgui; Dietrich Lemke
  • Marseille, France | June 23, 2008

abstract

Annular subaperture interferometric method has provided an alternative solution to testing rotationally symmetric aspheric surfaces with low cost and flexibility. However, some new challenges, particularly in the motion and algorithm components, appear when applied to large aspheric surfaces with large departure in the practical engineering. Based on our previously reported annular subaperture reconstruction algorithm with Zernike annular polynomials and matrix method, and the experimental results for an approximate 130-mm diameter and f/2 parabolic mirror, an experimental investigation by testing an approximate 302-mm diameter and f/1.7 parabolic mirror with the complementary annular subaperture interferometric method is presented. We have focused on full-aperture reconstruction accuracy, and discuss some error effects and limitations of testing larger aspheric surfaces with the annular subaperture method. Some considerations about testing sector segment with complementary sector subapertures are provided.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Xi Hou ; Fan Wu ; Baiping Lei ; Bin Fan and Qiang Chen
"Testing large aspheric surfaces with complementary annular subaperture interferometric method", Proc. SPIE 7018, Advanced Optical and Mechanical Technologies in Telescopes and Instrumentation, 70183K (July 14, 2008); doi:10.1117/12.786398; http://dx.doi.org/10.1117/12.786398


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