Reverse Design of Pixel-Type Micro-Polarizer Arrays to Improve Polarization Image Contrast.

IF 3 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL
Micromachines Pub Date : 2024-10-12 DOI:10.3390/mi15101251
Yonggui Shi, Zhihai Lin, Tianran Wang, Chaokai Huang, Hui Chen, Jianxiong Chen, Yu Xie
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引用次数: 0

Abstract

Micro-polarizer array (MPA) is the core optical component of the Division of Focal-Plane (DoFP) imaging system, and its design is very important to the system's performance. Traditional design methods rely on theoretical analysis and simulation, which is complicated and requires designers to have profound theoretical foundations. In order to simplify the design process and improve efficiency, this paper proposes a 2 × 2 MPA reverse-design strategy based on particle swarm optimization (PSO). This strategy uses intelligent algorithms to automatically explore the design space in order to discover MPA structures with optimal optical properties. In addition, the all-pass filter is introduced to the MPA superpixel unit in the design, which effectively reduces the crosstalk and frequency aliasing between pixels. In this study, two MPA models were designed: a traditional MPA and an MPA with an all-pass filter. The Degree of Linear Polarization (DOLP) image contrast is used as the evaluation standard and compared with the traditional MPA; the results show that the contrast of the newly designed traditional MPA image is increased by 21%, and the MPA image with the all-pass filter is significantly increased by 82%. Therefore, the reverse-design method proposed in this paper not only simplifies the design process but also can design an MPA with enhanced optical performance, which has obvious advantages over the traditional method.

反向设计像素型微型偏振器阵列,提高偏振图像对比度。
微偏振器阵列(MPA)是焦平面分部(DoFP)成像系统的核心光学元件,其设计对系统的性能非常重要。传统的设计方法依赖于理论分析和模拟,比较复杂,要求设计人员具有深厚的理论基础。为了简化设计过程,提高效率,本文提出了一种基于粒子群优化(PSO)的 2 × 2 MPA 逆向设计策略。该策略利用智能算法自动探索设计空间,以发现具有最佳光学特性的 MPA 结构。此外,设计中还在 MPA 超像素单元中引入了全通滤波器,从而有效降低了像素间的串扰和频率混叠。本研究设计了两种 MPA 模型:传统 MPA 和带全通滤波器的 MPA。结果表明,新设计的传统 MPA 图像对比度提高了 21%,而带有全通滤波器的 MPA 图像对比度显著提高了 82%。因此,本文提出的逆向设计方法不仅简化了设计过程,还能设计出光学性能更强的 MPA,与传统方法相比优势明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Micromachines
Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION
CiteScore
5.20
自引率
14.70%
发文量
1862
审稿时长
16.31 days
期刊介绍: Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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