• Infrared and Laser Engineering
  • Vol. 50, Issue 10, 20210224 (2021)
Qichang An1, Xiaoxia Wu1, Jingxu Zhang1, Hongwen Li1, and Liang Wang1,2,*
Author Affiliations
  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • 2School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130025, China
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    DOI: 10.3788/IRLA20210224 Cite this Article
    Qichang An, Xiaoxia Wu, Jingxu Zhang, Hongwen Li, Liang Wang. Large dynamic range curvature sensing for large-aperture active-optics survey telescope[J]. Infrared and Laser Engineering, 2021, 50(10): 20210224 Copy Citation Text show less
    Principle diagram of curvature sensing
    Fig. 1. Principle diagram of curvature sensing
    Coma dominated wavefront pre-focal and post-focal light distribution
    Fig. 2. Coma dominated wavefront pre-focal and post-focal light distribution
    Coma dominated wavefront retrieval accuracy (take wavefront RMS variation as the criterion)
    Fig. 3. Coma dominated wavefront retrieval accuracy (take wavefront RMS variation as the criterion)
    Schematic diagram of defocus detection
    Fig. 4. Schematic diagram of defocus detection
    Multiple defocusing dominant wavefront pre-focal and post-focal intensity distribution
    Fig. 5. Multiple defocusing dominant wavefront pre-focal and post-focal intensity distribution
    Multiple defocusing dominant wavefront reconstruction error accuracy (take wavefront RMS variation as the criterion)
    Fig. 6. Multiple defocusing dominant wavefront reconstruction error accuracy (take wavefront RMS variation as the criterion)
    Schematic diagram of system low order aberration calculation
    Fig. 7. Schematic diagram of system low order aberration calculation
    Low order wavefront sensing based on machine learning
    Fig. 8. Low order wavefront sensing based on machine learning
    Experimental device diagram of large range curvature sensing
    Fig. 9. Experimental device diagram of large range curvature sensing
    Multiple defocusing intensity distribution
    Fig. 10. Multiple defocusing intensity distribution
    Intensity distribution before and after defocusing dominated wavefront
    Fig. 11. Intensity distribution before and after defocusing dominated wavefront
    Comparison of reconstructed low order wavefront
    Fig. 12. Comparison of reconstructed low order wavefront
    Qichang An, Xiaoxia Wu, Jingxu Zhang, Hongwen Li, Liang Wang. Large dynamic range curvature sensing for large-aperture active-optics survey telescope[J]. Infrared and Laser Engineering, 2021, 50(10): 20210224
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