Table 3 Comparison of optical properties between metalens-based endoscopes and commercial endoscopes
From: Review for optical metalens based on metasurfaces: fabrication and applications
Type | Ref | Band | View | FOV | DOF | Resolution | Features |
|---|---|---|---|---|---|---|---|
Capsule | NIR | Forward | 165° | 5–100 mm | 300 lp/mm | NBI | |
EC-S10 (Olympus) (https://medical.olympusamerica.com/products/endocapsule-maj-2027) | Visible | Forward | 160° | 0–20 mm | reveal individual villi | - | |
Probe | Visible | Forward | 22.5° | ~30 mm | ~50 μm | Full-color | |
NIR | Side | - | 315 ÎĽm (sagittal) and 211 ÎĽm (tangential) | 6.53 ÎĽm (sagittal) and 6.37 ÎĽm (tangential) | OCT | ||
NIR | Forward | 70° | ~15 mm | ~140 μm | - | ||
GIF-EZ1500 (Olympus) (https://www.olympus-europa.com/medical/en/Products-and-Solutions/Products/Product/GIF-EZ1500.html) | Visible | Forward | 140° | 1.5 ~ 5.5 mm and 3 ~ 100 mm | - | NBI and RDI |
