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A laser beam shaper for homogeneous rectangular illumination based on freeform micro lens array

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Abstract

An effective design method of freeform micro lens array is presented for shaping varied laser beams into prescribed rectangular illumination. The variable separation mapping is applied to design concave freeform surfaces for constructing a freeform lens array. Several dedicated examples show that the designed freeform optical lens array can achieve a prescribed rectangular illumination pattern, especially without considering the initial states of incident laser beams. Both high collection efficiency and good spatial uniformity can be available simultaneously. Tolerance analysis is also performed to demonstrate that this optical device can well avoid fabricating difficulty in actual applications.

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Authors and Affiliations

  1. National and Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou, 350002, China

    En-guo Chen  (陈恩果), Jia-min Huang  (黄佳敏) & Tai-liang Guo  (郭太良)

  2. Postdoctoral Research Station of Electronic Science and Technology, Fuzhou University, Fuzhou, 350002, China

    En-guo Chen  (陈恩果) & Tai-liang Guo  (郭太良)

  3. 3D Visualization and Imaging System Lab, College of Optical Sciences, University of Arizona, Arizona, 85721, USA

    Reng-mao Wu  (吴仍茂)

Authors
  1. En-guo Chen  (陈恩果)
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  2. Jia-min Huang  (黄佳敏)
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  3. Tai-liang Guo  (郭太良)
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  4. Reng-mao Wu  (吴仍茂)
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Corresponding author

Correspondence to En-guo Chen  (陈恩果).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.61405037), and the Science and Technology Project of Fujian Province (No.2015H4014).

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Chen, Eg., Huang, Jm., Guo, Tl. et al. A laser beam shaper for homogeneous rectangular illumination based on freeform micro lens array. Optoelectron. Lett. 12, 253–256 (2016). https://doi.org/10.1007/s11801-016-6037-y

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  • DOI: https://doi.org/10.1007/s11801-016-6037-y

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