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

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 (MO...

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Autores principales: Kim, Kisoo, Jang, Kyung-Won, Ryu, Jae-Kwan, Jeong, Ki-Hun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046746/
https://www.ncbi.nlm.nih.gov/pubmed/32140219
http://dx.doi.org/10.1038/s41377-020-0261-8
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author Kim, Kisoo
Jang, Kyung-Won
Ryu, Jae-Kwan
Jeong, Ki-Hun
author_facet Kim, Kisoo
Jang, Kyung-Won
Ryu, Jae-Kwan
Jeong, Ki-Hun
author_sort Kim, Kisoo
collection PubMed
description 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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spelling pubmed-70467462020-03-05 Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging Kim, Kisoo Jang, Kyung-Won Ryu, Jae-Kwan Jeong, Ki-Hun Light Sci Appl Letter 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. Nature Publishing Group UK 2020-02-27 /pmc/articles/PMC7046746/ /pubmed/32140219 http://dx.doi.org/10.1038/s41377-020-0261-8 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Letter
Kim, Kisoo
Jang, Kyung-Won
Ryu, Jae-Kwan
Jeong, Ki-Hun
Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
title Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
title_full Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
title_fullStr Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
title_full_unstemmed Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
title_short Biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
title_sort biologically inspired ultrathin arrayed camera for high-contrast and high-resolution imaging
topic Letter
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7046746/
https://www.ncbi.nlm.nih.gov/pubmed/32140219
http://dx.doi.org/10.1038/s41377-020-0261-8
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