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Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays

3D in vivo imaging techniques facilitate disease tracking and treatment, but bulky configurations and motion artifacts limit practical clinical applications. Compact light-field cameras with microlens arrays offer a feasible option for rapid volumetric imaging, yet their utilization in clinical prac...

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Autores principales: Kwon, Jae-Myeong, Bae, Sang-In, Kim, Taehan, Kim, Jeong Kun, Jeong, Ki-Hun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: AIP Publishing LLC 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10465169/
https://www.ncbi.nlm.nih.gov/pubmed/37649619
http://dx.doi.org/10.1063/5.0155862
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author Kwon, Jae-Myeong
Bae, Sang-In
Kim, Taehan
Kim, Jeong Kun
Jeong, Ki-Hun
author_facet Kwon, Jae-Myeong
Bae, Sang-In
Kim, Taehan
Kim, Jeong Kun
Jeong, Ki-Hun
author_sort Kwon, Jae-Myeong
collection PubMed
description 3D in vivo imaging techniques facilitate disease tracking and treatment, but bulky configurations and motion artifacts limit practical clinical applications. Compact light-field cameras with microlens arrays offer a feasible option for rapid volumetric imaging, yet their utilization in clinical practice necessitates an increased depth-of-field for handheld operation. Here, we report deep focus light-field camera (DF-LFC) with crosstalk-free solid immersion microlens arrays (siMLAs), allowing large depth-of-field and high-resolution imaging for handheld 3D intraoral scanning. The siMLAs consist of thin PDMS-coated microlens arrays and a metal–insulator–metal absorber to extend the focal length with low optical crosstalk and specular reflection. The experimental results show that the immersion of MLAs in PDMS increases the focal length by a factor of 2.7 and the transmittance by 5.6%–27%. Unlike conventional MLAs, the siMLAs exhibit exceptionally high f-numbers up to f/6, resulting in a large depth-of-field for light-field imaging. The siMLAs were fully integrated into an intraoral scanner to reconstruct a 3D dental phantom with a distance measurement error of 82 ± 41 μm during handheld operation. The DF-LFC offers a new direction not only for digital dental impressions with high accuracy, simplified workflow, reduced waste, and digital compatibility but also for assorted clinical endoscopy and microscopy.
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spelling pubmed-104651692023-08-30 Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays Kwon, Jae-Myeong Bae, Sang-In Kim, Taehan Kim, Jeong Kun Jeong, Ki-Hun APL Bioeng Articles 3D in vivo imaging techniques facilitate disease tracking and treatment, but bulky configurations and motion artifacts limit practical clinical applications. Compact light-field cameras with microlens arrays offer a feasible option for rapid volumetric imaging, yet their utilization in clinical practice necessitates an increased depth-of-field for handheld operation. Here, we report deep focus light-field camera (DF-LFC) with crosstalk-free solid immersion microlens arrays (siMLAs), allowing large depth-of-field and high-resolution imaging for handheld 3D intraoral scanning. The siMLAs consist of thin PDMS-coated microlens arrays and a metal–insulator–metal absorber to extend the focal length with low optical crosstalk and specular reflection. The experimental results show that the immersion of MLAs in PDMS increases the focal length by a factor of 2.7 and the transmittance by 5.6%–27%. Unlike conventional MLAs, the siMLAs exhibit exceptionally high f-numbers up to f/6, resulting in a large depth-of-field for light-field imaging. The siMLAs were fully integrated into an intraoral scanner to reconstruct a 3D dental phantom with a distance measurement error of 82 ± 41 μm during handheld operation. The DF-LFC offers a new direction not only for digital dental impressions with high accuracy, simplified workflow, reduced waste, and digital compatibility but also for assorted clinical endoscopy and microscopy. AIP Publishing LLC 2023-08-28 /pmc/articles/PMC10465169/ /pubmed/37649619 http://dx.doi.org/10.1063/5.0155862 Text en © 2023 Author(s). https://creativecommons.org/licenses/by/4.0/All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Articles
Kwon, Jae-Myeong
Bae, Sang-In
Kim, Taehan
Kim, Jeong Kun
Jeong, Ki-Hun
Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays
title Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays
title_full Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays
title_fullStr Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays
title_full_unstemmed Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays
title_short Deep focus light-field camera for handheld 3D intraoral scanning using crosstalk-free solid immersion microlens arrays
title_sort deep focus light-field camera for handheld 3d intraoral scanning using crosstalk-free solid immersion microlens arrays
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10465169/
https://www.ncbi.nlm.nih.gov/pubmed/37649619
http://dx.doi.org/10.1063/5.0155862
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