Fig. 1

Schematic of the meta-optical fiber endoscope: the meta-optics is optimized to have a large average volume under the MTF curve over a broad wavelength range to allow color preservation. In comparison with a traditional GRIN lens, the use of meta-optics reduces the tip length, while maintaining a wide field of view of \({22.5}^{o}\)and large depth of field exceeding 30 mm