Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Improved Iterative Method for Wavefront Reconstruction from Derivatives in Grid Geometry

  • Nguyen, Vu-Hai-Linh (Department of Science of measurement, University of Science and Technology) ;
  • Rhee, Hyug-Gyo (Department of Science of measurement, University of Science and Technology) ;
  • Ghim, Young-Sik (Department of Science of measurement, University of Science and Technology)
  • Received : 2021.09.03
  • Accepted : 2021.11.02
  • Published : 2022.02.25
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Abstract

This paper proposes a robust, simple zonal wavefront-estimation method in a grid sampling model. More slopes are added to the integral equation of the algorithm to improve the accuracy and convergence rate of this approach, especially for higher-order optical aberrations. The Taylor theorem is applied to clarify the mathematical description of the remaining error in the proposed method. Several numerical simulations are conducted to ensure the performance and improvement in comparison to the Southwell and previous algorithm. An experiment is also conducted according to deflectometry output and the results are verified using a reference measured with a stylus system.

Keywords

Acknowledgement

This study was supported by the Commercialization Promotion Agency for R&D Outcomes (COMPA), "Real-time 3D surface measurement for aspheric and freeform lens", funded by the Ministry of Science and ICT(MSIT).

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