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Proceedings Paper

Optimization methods of tilted multifocus Fresnel binary optical elements
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Paper Abstract

In the Fresnel condition, the design and optimization method of binary optical element with multi-focus has been investigated. A one-step optimizing algorithm of tilted multi-focus diffractive optical element is presented by using a tilted image plane in the Fresnel approximation. Based on iterative Fourier transform algorithm (IFTA), not only the higher diffraction efficiency, increased about four percent, but also the instability of distributing at the different focus, namely different tilted angle, are obviously improved by the modified simulated annealing algorithm (SA). Comparison on one-step and multi-step circle algorithm of optimizing multi-focus diffraction element shows both the faster speed and the higher diffraction efficiency for the one-step algorithm.

Paper Details

Date Published: 7 February 2005
PDF: 8 pages
Proc. SPIE 5636, Holography, Diffractive Optics, and Applications II, (7 February 2005); doi: 10.1117/12.574147
Show Author Affiliations
Weifeng Ling, Suzhou Univ. (China)
Linsen Chen, Suzhou Univ. (China)


Published in SPIE Proceedings Vol. 5636:
Holography, Diffractive Optics, and Applications II
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu; Byoungho Lee, Editor(s)

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