Large-scale achromatic flat lens by light frequency-domain coherence optimization.

ABSTRACT: Flat lenses, including metalens and diffractive lens, have attracted increasing attention due to their ability to miniaturize the imaging devices. However, realizing a large scale achromatic flat lens with high performance still remains a big challenge. Here, we developed a new framework in designing achromatic multi-level diffractive lenses by light coherence optimization, which enables the implementation of large-scale flat lenses under non-ideal conditions. As results, a series achromatic polymer lenses with diameter from 1 to 10 mm are successfully designed and fabricated. The subsequent optical characterizations substantially validate our theoretical framework and show relatively good performance of the centimeter-scale achromatic multi-level diffractive lenses with a super broad band

SUBMITTER: Xiao X 

PROVIDER: S-EPMC9649754 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature