Laser & Optoelectronics Progress, Volume. 60, Issue 20, 2011004(2023)

Direct Imaging with Liquid Crystal Microlens Array

Tian Liu, Zhiqiang Liu, and Mao Ye*
Author Affiliations
  • School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan , China
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    A two-channel low-voltage driving liquid crystal microlens array structure is proposed to solve the complex structure and narrow field of view of conventional microscopes. The focal length of the lens is controlled by three electrodes, and the middle electrode has a circular hole array pattern, which acts as an aperture stop to block stray light. The wavefront and optical power of the array are measured. A simple direct imaging system of the liquid crystal microlens array is developed. Each part of the object is imaged by the corresponding microlens. The crosstalk between adjacent microlenses is reduced via near-parallel light illumination, and the subimages are combined to obtain the complete image. The system requires no additional optics and has a simple, compact structure. The liquid crystal microlens array has a broad field of view, and the imaging area is scalable. This study provides a new technique for achieving simple microscopic imaging in a broad field of view.

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    Tian Liu, Zhiqiang Liu, Mao Ye. Direct Imaging with Liquid Crystal Microlens Array[J]. Laser & Optoelectronics Progress, 2023, 60(20): 2011004

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    Paper Information

    Category: Imaging Systems

    Received: Jan. 14, 2022

    Accepted: Feb. 18, 2022

    Published Online: Sep. 20, 2023

    The Author Email: Ye Mao (mao_ye@uestc.edu.cn)

    DOI:10.3788/LOP221273

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