Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging

Kisoo Kim; Kyung-Won Jang; Jae-Kwan Ryu; Ki-Hun Jeong

doi:10.1038/s41377-020-0261-8

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Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging

Letter

- Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
- Light: Science & Applications Vol. 9, Issue 2, Pages: 224-230(2020)
- Affiliations：
  
  1.Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
  2.KAIST Institute for Health Science and Technology, KAIST, Daejeon 34141, Republic of Korea
  3.Unmanned/Robotic Systems Lab., LIG Nex1 Co. Ltd, Seongnam 13488, Republic of Korea
- Author bio：
  
  Ki-Hun Jeong (kjeong@kaist.ac.kr)
- Funds：
- DOI：10.1038/s41377-020-0261-8
  CLC：
- Published：2020，
  
  Published Online：27 February 2020，
  
  Received：27 September 2019，
  
  Revised：10 February 2020，
  
  Accepted：13 February 2020
- Accepted：
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Kim, K. et al. Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging. Light: Science & Applications, 9, 224-230 (2020).
DOI：

Kim, K. et al. Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging. Light: Science & Applications, 9, 224-230 (2020). DOI： 10.1038/s41377-020-0261-8.

摘要

Abstract

Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturised imaging systems. Here

we report an ultrathin arrayed camera inspired by insect eye structures for high-contrast and super-resolution imaging. The ultrathin camera features micro-optical elements (MOEs)

i.e.

inverted microlenses

multilayered pinhole arrays

and gap spacers on an image sensor. The MOE was fabricated by using repeated photolithography and thermal reflow. The fully packaged camera shows a total track length of 740 μm and a field-of-view (FOV) of 73°. The experimental results demonstrate that the multilayered pinhole of the MOE allows high-contrast imaging by eliminating the optical crosstalk between microlenses. The integral image reconstructed from array images clearly increases the modulation transfer function (MTF) by ~1.57 times compared to that of a single channel image in the ultrathin camera. This ultrathin arrayed camera provides a novel and practical direction for diverse mobile

surveillance or medical applications.

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Keywords

references

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