Super-resolution imaging with an achromatic multi-level diffractive microlens array
Optics
2020-12-02 v1
Abstract
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 multilevel diffractive microlens array for super-resolution visible imaging. We experimentally demonstrated that the microlens array can achieve large fill factor (hexagonal close packing with pitch=120um), thickness of 2.6um, and diffraction-limited (strehl ratio = 0.88) achromatic performance in the visible band (450nm to 650nm). We also demonstrate super-resolution imaging with resolution improvement of 1.4 times by computationally merging 1600 images in the array.
Cite
@article{arxiv.2009.05068,
title = {Super-resolution imaging with an achromatic multi-level diffractive microlens array},
author = {Sourangsu Banerji and Monjurul Meem and Apratim Majumder and Berardi Sensale-Rodriguez and Rajesh Menon},
journal= {arXiv preprint arXiv:2009.05068},
year = {2020}
}