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http://dx.doi.org/10.3807/COPP.2022.6.1.001

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)
Publication Information
Current Optics and Photonics / v.6, no.1, 2022 , pp. 1-9 More about this Journal
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
Deflectometry; Shack-Hartmann sensor; Slopes measurement; Wavefront reconstruction;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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