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Super-resolution imaging with an achromatic multi-level diffractive microlens array
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DOI：10.1364/OL.410013.png)
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Abstract
En 中文
Compound eyes found in insects provide intriguing sources of biological inspiration for miniaturized imaging systems. Inspired by such insect eye structures, we demonstrate an ultrathin arrayed camera enabled by a flat multi-level diffractive microlens array for super-resolution visible imaging. We experimentally demonstrate that the microlens array can achieve a large fill factor (hexagonal dose packing with pitch = 120 mu m), thickness of 2.6 mu m, and diffraction-limited (Strehl ratio = 0.88) achromatic performance in the visible band (450 to 650 nm). We also demonstrate super-resolution imaging with resolution improvement of similar to 1.4 times by computationally merging 1600 images in the array. (C) 2020 Optical Society of America
Keywords:
LENS