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Wide FOV metalens for near-infrared capsule endoscopy: advancing compact medical imaging
Nanophotonics ( IF 6.5 ) 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

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.

中文翻译:


用于近红外胶囊内窥镜检查的宽 FOV 超透镜:推进紧凑型医学成像



本研究介绍了针对胶囊内窥镜优化的宽视场 (FOV) 超透镜的设计、制造和表征。超透镜实现了 165° 视场角,在整个视场范围内具有每毫米 300 线 (lp/mm) 的高调制传递函数 (MTF),可在 940 nm 的近红外 (NIR) 窄带通成像中运行。使用两个带宽 12 nm 和 32 nm 评估基于超透镜的系统的性能,在 250 lp/mm 时分别显示 0.2 和 0.3 的 MTF 值。基于超透镜的系统保持了紧凑的外形尺寸,总轨道长度为 1.4 mm,直径为 1.58 mm。与传统的 108° FOV 内窥镜相比,纳米光学胶囊内窥镜在 FOV、对比度和分辨率方面表现出卓越的性能。这一进步代表了朝着增强医学成像诊断能力迈出的重要一步,与传统光学器件相比,在更紧凑的封装中提供了更高的性能。
更新日期:2024-10-16
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