Large FOV short-wave infrared meta-lens for scanning fiber endoscopy

Xie, Ningzhi; Carson, Matthew D.; Fröch, Johannes E.; Majumdar, Arka; Seibel, Eric J.; Böhringer, K. F.

doi:10.48550/arxiv.2212.11272

Cited by 1 publication

(2 citation statements)

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“…Among existing types of fiber-based endoscopes, we chose to optimize a meta-optic for direct full color imaging in combination with a CFB. In contrast, single fiberbased systems, such as scanning fiber endoscopes [31] can provide a thinner diameter of the device but require a sophisticated scanning mechanism at the tip of the endoscope. CFB-based endoscopes on the other hand require a typically thicker diameter, but no scanning element is required.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, flat meta-optics are compatible with high-volume semiconductor manufacturing technology [25][26][27], and thus can create disposable optics. These properties have already inspired researchers to explore the potential of meta-optics for endoscopy including fiber-integrated endoscopy [28,29], side-viewing single fiber scanning endoscopy [30], and scanning fiber forward viewing endoscopy [31]. Unfortunately, meta-optics traditionally suffer from strong aberrations (both chromatic and Seidel) making large FoV and full-color imaging challenging.…”

Section: Introductionmentioning

confidence: 99%

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Real time full-color imaging in a Meta-optical fiber endoscope

Fröch

Huang

Tanguy

et al. 2023

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Endoscopes are an important component for the development of minimally invasive surgeries. Their size is one of the most critical aspects, because smaller and less rigid endoscopes enable higher agility, facilitate larger accessibility, and induce less stress on the surrounding tissue. In all existing endoscopes, the size of the optics poses a major limitation in miniaturization of the imaging system. Not only is making small optics difficult, but their performance also degrades with downscaling. Meta-optics have recently emerged as a promising candidate to drastically miniaturize optics while achieving similar functionalities with significantly reduced size. Herein, we report an inverse-designed meta-optic, which combined with a coherent fiber bundle enables a 33% reduction in the rigid tip length over traditional gradient-index (GRIN) lenses. We use the meta-optic fiber endoscope (MOFIE) to demonstrate real-time video capture in full visible color, the spatial resolution of which is primarily limited by the fiber itself. Our work shows the potential of meta-optics for integration and miniaturization of biomedical devices towards minimally invasive surgery.

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Section: Discussionmentioning

confidence: 99%