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A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics

Chalcogenide glass (ChG) is increasingly demanded in infrared optical systems owing to its excellent infrared optical properties. ChG infrared optics including ChG aspherical and freeform optics are mainly fabricated using the single point diamond turning (SPDT) technique, which is characterized by...

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Detalles Bibliográficos
Autores principales: Zhou, Tianfeng, Zhu, Zhanchen, Liu, Xiaohua, Liang, Zhiqiang, Wang, Xibin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082271/
https://www.ncbi.nlm.nih.gov/pubmed/30424270
http://dx.doi.org/10.3390/mi9070337
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author Zhou, Tianfeng
Zhu, Zhanchen
Liu, Xiaohua
Liang, Zhiqiang
Wang, Xibin
author_facet Zhou, Tianfeng
Zhu, Zhanchen
Liu, Xiaohua
Liang, Zhiqiang
Wang, Xibin
author_sort Zhou, Tianfeng
collection PubMed
description Chalcogenide glass (ChG) is increasingly demanded in infrared optical systems owing to its excellent infrared optical properties. ChG infrared optics including ChG aspherical and freeform optics are mainly fabricated using the single point diamond turning (SPDT) technique, which is characterized by high cost and low efficiency. This paper presents an overview of the ChG infrared optics fabrication technique through precision glass molding (PGM). It introduces the thermo-mechanical properties of ChG and models the elastic-viscoplasticity constitutive of ChG. The forming accuracy and surface defects of the formed ChG are discussed, and the countermeasures to improve the optics quality are also reviewed. Moreover, the latest advancements in ChG precision molding are detailed, including the aspherical lens molding process, the ChG freeform optics molding process, and some new improvements in PGM.
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spelling pubmed-60822712018-11-01 A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics Zhou, Tianfeng Zhu, Zhanchen Liu, Xiaohua Liang, Zhiqiang Wang, Xibin Micromachines (Basel) Review Chalcogenide glass (ChG) is increasingly demanded in infrared optical systems owing to its excellent infrared optical properties. ChG infrared optics including ChG aspherical and freeform optics are mainly fabricated using the single point diamond turning (SPDT) technique, which is characterized by high cost and low efficiency. This paper presents an overview of the ChG infrared optics fabrication technique through precision glass molding (PGM). It introduces the thermo-mechanical properties of ChG and models the elastic-viscoplasticity constitutive of ChG. The forming accuracy and surface defects of the formed ChG are discussed, and the countermeasures to improve the optics quality are also reviewed. Moreover, the latest advancements in ChG precision molding are detailed, including the aspherical lens molding process, the ChG freeform optics molding process, and some new improvements in PGM. MDPI 2018-07-02 /pmc/articles/PMC6082271/ /pubmed/30424270 http://dx.doi.org/10.3390/mi9070337 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Zhou, Tianfeng
Zhu, Zhanchen
Liu, Xiaohua
Liang, Zhiqiang
Wang, Xibin
A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics
title A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics
title_full A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics
title_fullStr A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics
title_full_unstemmed A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics
title_short A Review of the Precision Glass Molding of Chalcogenide Glass (ChG) for Infrared Optics
title_sort review of the precision glass molding of chalcogenide glass (chg) for infrared optics
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6082271/
https://www.ncbi.nlm.nih.gov/pubmed/30424270
http://dx.doi.org/10.3390/mi9070337
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