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Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability
The membrane–Fresnel diffractive lens (M-FDL) has great potential in the field of high-resolution and lightweight imaging in orbit. However, the M-FDL with high-optical quality and high-thermal stability cannot be fabricated to a standard by the existing processing methods. In this paper, we propose...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9370265/ https://www.ncbi.nlm.nih.gov/pubmed/35956573 http://dx.doi.org/10.3390/polym14153056 |
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author | Liu, Xin Li, Min Li, Bincheng Fan, Bin |
author_facet | Liu, Xin Li, Min Li, Bincheng Fan, Bin |
author_sort | Liu, Xin |
collection | PubMed |
description | The membrane–Fresnel diffractive lens (M-FDL) has great potential in the field of high-resolution and lightweight imaging in orbit. However, the M-FDL with high-optical quality and high-thermal stability cannot be fabricated to a standard by the existing processing methods. In this paper, we propose a method for fabricating an M-FDL composed of three steps: the improved repeated spin-coating of the polyimide (PI) membrane, the secondary mucosal method of silica-framed membrane mirror, and the high-precision fabrication of a multi-level microstructure on a flexible, ultrathin membrane substrate. The results show that the root mean square (RMS) of the wave-front error for M-FDL obtained by the above method is 1/28λ (F# = 8.7 at 632.8 nm) with an 80 mm clear aperture, the average diffraction efficiency is more than 70%, the silica-framed membrane mirror possesses approximately 40 times the overall thermal stability of the traditional metal-framed mirror, and the weight is less than 40 g. The measurement results indicate that the M-FDL has high-optical quality and high-thermal stability and can satisfy the imaging requirements. |
format | Online Article Text |
id | pubmed-9370265 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-93702652022-08-12 Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability Liu, Xin Li, Min Li, Bincheng Fan, Bin Polymers (Basel) Article The membrane–Fresnel diffractive lens (M-FDL) has great potential in the field of high-resolution and lightweight imaging in orbit. However, the M-FDL with high-optical quality and high-thermal stability cannot be fabricated to a standard by the existing processing methods. In this paper, we propose a method for fabricating an M-FDL composed of three steps: the improved repeated spin-coating of the polyimide (PI) membrane, the secondary mucosal method of silica-framed membrane mirror, and the high-precision fabrication of a multi-level microstructure on a flexible, ultrathin membrane substrate. The results show that the root mean square (RMS) of the wave-front error for M-FDL obtained by the above method is 1/28λ (F# = 8.7 at 632.8 nm) with an 80 mm clear aperture, the average diffraction efficiency is more than 70%, the silica-framed membrane mirror possesses approximately 40 times the overall thermal stability of the traditional metal-framed mirror, and the weight is less than 40 g. The measurement results indicate that the M-FDL has high-optical quality and high-thermal stability and can satisfy the imaging requirements. MDPI 2022-07-28 /pmc/articles/PMC9370265/ /pubmed/35956573 http://dx.doi.org/10.3390/polym14153056 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liu, Xin Li, Min Li, Bincheng Fan, Bin Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability |
title | Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability |
title_full | Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability |
title_fullStr | Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability |
title_full_unstemmed | Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability |
title_short | Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability |
title_sort | membrane–fresnel diffractive lenses with high-optical quality and high-thermal stability |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9370265/ https://www.ncbi.nlm.nih.gov/pubmed/35956573 http://dx.doi.org/10.3390/polym14153056 |
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