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LC-lens array with light field algorithm for 3D bio-medical applications

机译：具有光场算法的LC镜头阵列在3D生物医学应用中的应用

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摘要

In this paper, liquid crystal lens (LC-lens) array was utilized in 3D bio-medical applications including 3D endoscope and light field microscope. Comparing with conventional plastic lens array, which was usually placed in 3D endoscope or light field microscope system to record image disparity, our LC-lens array has higher flexibility of electrically changing its focal length. By using LC-lens array, the working distance and image quality of 3D endoscope and microscope could be enhanced. Furthermore, the 2D/3D switching ability could be achieved if we turn off/on the electrical power on LC-lens array. In 3D endoscope case, a hexagonal micro LC-lens array with 350um diameter was placed at the front end of a 1mm diameter endoscope. With applying electric field on LC-lens array, the 3D specimen would be recorded as from seven micro-cameras with different disparity. We could calculate 3D construction of specimen with those micro images. In the other hand, if we turn off the electric field on LC-lens array, the conventional high resolution 2D endoscope image would be recorded. In light field microscope case, the LC-lens array was placed in front of the CMOS sensor. The main purpose of LC-lens array is to extend the refocusing distance of light field microscope, which is usually very narrow in focused light field microscope system, by montaging many light field images sequentially focusing on different depth. With adjusting focal length of LC-lens array from 2.4mm to 2.9mm, the refocusing distance was extended from lmm to 11.3mm. Moreover, we could use a LC wedge to electrically shift the optics axis and increase the resolution of light field.
机译：在本文中，液晶透镜（LC-lens）阵列用于3D生物医学应用，包括3D内窥镜和光场显微镜。与通常放置在3D内窥镜或光场显微镜系统中以记录图像差异的传统塑料透镜阵列相比，我们的LC透镜阵列在改变焦距方面具有更高的灵活性。通过使用LC透镜阵列，可以提高3D内窥镜和显微镜的工作距离和图像质量。此外，如果我们关闭/打开LC镜头阵列上的电源，则可以实现2D / 3D切换能力。在3D内窥镜情况下，将直径为350um的六角形微型LC透镜阵列放置在直径为1mm的内窥镜的前端。通过在LC镜头阵列上施加电场，可以从7个具有不同视差的微型相机中记录3D标本。我们可以用这些显微图像计算样品的3D结构。另一方面，如果我们关闭LC透镜阵列上的电场，则将记录传统的高分辨率2D内窥镜图像。在光场显微镜的情况下，LC透镜阵列放置在CMOS传感器的前面。 LC透镜阵列的主要目的是通过将许多聚焦在不同深度上的光场图像进行蒙太奇来延长光场显微镜的重聚焦距离，该距离通常在聚焦光场显微镜系统中非常狭窄。通过将LC镜头阵列的焦距从2.4mm调整到2.9mm，重新聚焦距离从1mm扩大到11.3mm。此外，我们可以使用LC楔来电移动光轴并提高光场的分辨率。

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  • 来源
    《Emerging liquid crystal technologies XI》|2016年|97690F.1-97690F.6|共6页
  • 会议地点 San Francisco CA(US)
  • 作者

    Yi-Pai Huang; Po-Yuan Hsieh; Amir Hassanfiroozi; Manuel Martinez; Bahrain Javidi; Chao-Yu Chu; Yun Hsuan; Wen-Chun Chu;

  • 作者单位

    Department of Photonics Institute of Electro-Optical Engineering Display Institute, National Chiao Tung University, Hsinchu, 30010, Taiwan;

    Department of Photonics Institute of Electro-Optical Engineering Display Institute, National Chiao Tung University, Hsinchu, 30010, Taiwan;

    Department of Photonics Institute of Electro-Optical Engineering Display Institute, National Chiao Tung University, Hsinchu, 30010, Taiwan;

    Department of Physics, Universitat de Valencia, Valencia, Spain;

    Electrical and Computer Engineering Department, University of Connecticut, Storrs, CT 06269-4157, USA;

    Department of Photonics Institute of Electro-Optical Engineering Display Institute, National Chiao Tung University, Hsinchu, 30010, Taiwan;

    Department of Photonics Institute of Electro-Optical Engineering Display Institute, National Chiao Tung University, Hsinchu, 30010, Taiwan;

    Department of Photonics Institute of Electro-Optical Engineering Display Institute, National Chiao Tung University, Hsinchu, 30010, Taiwan;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Liquid crystal lens; Endoscope; Microscope; Light Field;

    机译：液晶镜片；内窥镜;显微镜;光场;

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