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用于高效圆柱形衍射微透镜的新设计模型。

New design model for high efficiency cylindrical diffractive microlenses.

作者信息

Li Ye, Zhao Huan, Feng Sheng-Fei, Ye Jia-Sheng, Wang Xin-Ke, Sun Wen-Feng, Han Peng, Zhang Yan

机构信息

Department of Physics, Capital Normal University, Beijing Key Laboratory of Metamaterials and Devices, Beijing Advanced Innovation Center for Imaging Technology, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing, 100048, P. R. China.

出版信息

Sci Rep. 2017 Nov 27;7(1):16334. doi: 10.1038/s41598-017-14787-x.

DOI:10.1038/s41598-017-14787-x
PMID:29180786
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5703728/
Abstract

A new model, i.e., the decreasing thickness model (DTM) is proposed and employed for designing the cylindrical diffractive microlenses (CDMs). Focal performances of the designed CDMs are theoretically investigated by solving Maxwell's equations with the boundary element method. For comparison, the CDMs designed by the traditional equal thickness model (ETM) are also studied. Theoretical simulations demonstrate that focal performances of the designed CDMs are improved a lot via replacing the traditional ETM with the proposed DTM. Concretely, the focal efficiency is heightened and the focal spot size is shrunk. Experimental measurements verify the theoretical simulations well. Especially, the above-mentioned improvements become more prominent for the CDM with a higher numerical aperture.

摘要

提出了一种新的模型，即厚度递减模型（DTM），并将其用于设计柱面衍射微透镜（CDM）。通过用边界元法求解麦克斯韦方程组，从理论上研究了所设计的CDM的聚焦性能。为作比较，还研究了由传统等厚度模型（ETM）设计的CDM。理论模拟表明，通过用所提出的DTM取代传统的ETM，所设计的CDM的聚焦性能有了很大改善。具体而言，聚焦效率提高了，焦斑尺寸缩小了。实验测量很好地验证了理论模拟。特别是，对于具有较高数值孔径的CDM，上述改进更为显著。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/09405457a721/41598_2017_14787_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/009f1020bcf4/41598_2017_14787_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/df9ffe074f8a/41598_2017_14787_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/4ff47e11ef1b/41598_2017_14787_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/fd04cf3d29c6/41598_2017_14787_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/a7b23f9b81b3/41598_2017_14787_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/5f5a2ec38319/41598_2017_14787_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/0626b42101af/41598_2017_14787_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/09405457a721/41598_2017_14787_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/009f1020bcf4/41598_2017_14787_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/df9ffe074f8a/41598_2017_14787_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/4ff47e11ef1b/41598_2017_14787_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/fd04cf3d29c6/41598_2017_14787_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/a7b23f9b81b3/41598_2017_14787_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/5f5a2ec38319/41598_2017_14787_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/0626b42101af/41598_2017_14787_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e43c/5703728/09405457a721/41598_2017_14787_Fig8_HTML.jpg

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本文引用的文献

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Multi-focused microlens array optimization and light field imaging study based on Monte Carlo method.基于蒙特卡罗方法的多焦点微透镜阵列优化与光场成像研究
Opt Express. 2017 Apr 3;25(7):8274-8287. doi: 10.1364/OE.25.008274.
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