28 February 2017 Global optimization method based on ray tracing to achieve optimum figure error compensation
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Proceedings Volume 10256, Second International Conference on Photonics and Optical Engineering; 1025657 (2017) https://doi.org/10.1117/12.2260716
Event: Second International Conference on Photonics and Optical Engineering, 2016, Xi'an, China
Abstract
Figure error would degrade the performance of optical system. When predicting the performance and performing system assembly, compensation by clocking of optical components around the optical axis is a conventional but user-dependent method. Commercial optical software cannot optimize this clocking. Meanwhile existing automatic figure-error balancing methods can introduce approximate calculation error and the build process of optimization model is complex and time-consuming. To overcome these limitations, an accurate and automatic global optimization method of figure error balancing is proposed. This method is based on precise ray tracing to calculate the wavefront error, not approximate calculation, under a given elements’ rotation angles combination. The composite wavefront error root-mean-square (RMS) acts as the cost function. Simulated annealing algorithm is used to seek the optimal combination of rotation angles of each optical element. This method can be applied to all rotational symmetric optics. Optimization results show that this method is 49% better than previous approximate analytical method.
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Xiaolin Liu, Xuejia Guo, Tianjin Tang, "Global optimization method based on ray tracing to achieve optimum figure error compensation", Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 1025657 (28 February 2017); doi: 10.1117/12.2260716; https://doi.org/10.1117/12.2260716
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