Wide FOV metalens for near-infrared capsule endoscopy: advancing compact medical imaging

IF 6.5 2区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanophotonics Pub Date : 2024-10-16 DOI:10.1515/nanoph-2024-0393

Mojtaba Moghaddasi, Erik Edilson Perez Coca, Danni Ye, Diego Alejandro Flores, Xudong Wu, Abdul Jalal, Ziming Ren, Fahimeh Abrinaei, Bin Hu

引用次数: 0

Abstract

This study presents the design, fabrication, and characterization of a wide field-of-view (FOV) metalens optimized for capsule endoscopy. The metalens achieved a 165° FOV with a high modulation transfer function (MTF) of 300 lines per millimeter (lp/mm) across the entire FOV, operating in the near-infrared (NIR) narrow-bandpass imaging at 940 nm. The performance of the metalens-based system is evaluated using two bandwidths, 12 nm and 32 nm, showing MTF values of 0.2 and 0.3 at 250 lp/mm, respectively. The metalens-based system maintains a compact form factor with a total track length of 1.4 mm and a diameter of 1.58 mm. Compared to a traditional 108° FOV endoscope, the nano-optic capsule endoscope demonstrated superior performance in terms of FOV, contrast, and resolution. This advancement represents a significant step toward enhancing diagnostic capabilities in medical imaging, offering improved performance in a more compact package compared to conventional optics.

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用于近红外胶囊内窥镜检查的宽 FOV 金属透镜：推动紧凑型医疗成像技术的发展

本研究介绍了一种针对胶囊内窥镜进行优化的宽视场（FOV）金属膜的设计、制造和表征。该金属膜的视场角为 165°，整个视场角的调制传递函数（MTF）高达每毫米 300 条线（lp/mm），可在波长为 940 纳米的近红外（NIR）窄带通成像中工作。使用 12 nm 和 32 nm 两种带宽对金属膜系统的性能进行了评估，结果显示，在 250 lp/mm 时，MTF 值分别为 0.2 和 0.3。基于金属膜的系统外形小巧，轨道总长度为 1.4 毫米，直径为 1.58 毫米。与传统的 108° 视场角内窥镜相比，纳米光学胶囊内窥镜在视场角、对比度和分辨率方面都表现出了卓越的性能。与传统光学器件相比，该技术以更紧凑的封装提供更高的性能，是提高医学成像诊断能力的重要一步。

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

Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

13.50

自引率

6.70%

发文量

358

审稿时长

7 weeks

期刊介绍： Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.