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Proceedings Paper

High accuracy wavefront reconstruction with slope and coordinate compensation
Author(s): Yiyu Li; Wei Huang; Siyun Chen; Jiaojie Chen; Haihua Feng; Hao Chen
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Paper Abstract

The conventional wavefront reconstruction of the Shack-Hartmann method is based on the measured slopes by using the least-square fitting method. However, this reconstruction method suffers from the low order Zernike terms in wavefront, especially defocus and astigmatism, due to the discrepancy of coordinate systems between the lenslet array and the original wavefront caused by the propagation of subaperture wavefront. In this paper, a ray tracing method was used to calculate the slope error between an input wavefront and the reconstructed wavefront. Then, an iteration procedure including slope compensation and coordination compensation was constructed and implemented to minimize the wavefront reconstruction error. The numerical simulation was performed for a variety of defocus-dominated input wavefront and high-order-dominated input wavefront, and verified that high accuracy wavefront reconstruction can be achieved by the proposed iterative compensation method.

Paper Details

Date Published: 12 December 2018
PDF: 7 pages
Proc. SPIE 10847, Optical Precision Manufacturing, Testing, and Applications, 1084706 (12 December 2018); doi: 10.1117/12.2503942
Show Author Affiliations
Yiyu Li, Wenzhou Medical Univ. (China)
Wei Huang, Wenzhou Medical Univ. (China)
Siyun Chen, Wenzhou Medical Univ. (China)
Jiaojie Chen, Wenzhou Medical Univ. (China)
Haihua Feng, Wenzhou Medical Univ. (China)
Hao Chen, Wenzhou Medical Univ. (China)

Published in SPIE Proceedings Vol. 10847:
Optical Precision Manufacturing, Testing, and Applications
John McBride; JiuBin Tan; Sen Han; Xuejun Zhang, Editor(s)

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