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

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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.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Wide FOV metalens for near-infrared capsule endoscopy: advancing compact medical imaging ; volume:13 ; number:24 ; year:2024 ; pages:4417-4428 ; extent:12
Nanophotonics ; 13, Heft 24 (2024), 4417-4428 (gesamt 12)

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

DOI: 10.1515/nanoph-2024-0393

URN: urn:nbn:de:101:1-2411111449189.971590565468

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 15.08.2025, 7:38 AM CEST

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

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

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