2024
DOI: 10.1515/nanoph-2024-0393
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Wide FOV metalens for near-infrared capsule endoscopy: advancing compact medical imaging

Mojtaba Moghaddasi,
Erik Edilson Perez Coca,
Danni Ye
et al.

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 met… Show more

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