Edge detection with meta-lens: from one dimension to three dimensions

Chen Mu Ku; Yan Yue; Liu Xiaoyuan; Wu Yongfeng; Zhang Jingcheng; Yuan Jiaqi; Zhang Zhengnan; Tsai Din Ping

doi:10.1515/nanoph-2021-0239

Nanophotonics (Jul 2021)

Edge detection with meta-lens: from one dimension to three dimensions

Chen Mu Ku,
Yan Yue,
Liu Xiaoyuan,
Wu Yongfeng,
Zhang Jingcheng,
Yuan Jiaqi,
Zhang Zhengnan,
Tsai Din Ping

Affiliations

Chen Mu Ku: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Yan Yue: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Liu Xiaoyuan: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Wu Yongfeng: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Zhang Jingcheng: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Yuan Jiaqi: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Zhang Zhengnan: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
Tsai Din Ping: Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China

DOI: https://doi.org/10.1515/nanoph-2021-0239
Journal volume & issue: Vol. 10, no. 14
pp. 3709 – 3715

Abstract

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Meta-lens has successfully been developed for a variety of optical functions. We demonstrate a light-field edge detection imaging system with a gallium nitride achromatic meta-lens array. It enables edge detection from one dimension to three dimensions. The designed meta-lens array consists of 60 by 60 achromatic meta-lenses, which operate in the visible range from 400 to 660 nm. All of the light field information of objects in the scene can be captured and computed. The focused edge images from one dimension to three dimensions are extracted with depth estimation by image rendering. Three dimensions edge detection is two dimensions edge imaging with depth information. The focused edge images can be obtained by the sub-image reconstruction of the light field image. Our multidimensional edge detection system by achromatic meta-lens array brings novel advantages, such as broadband detection, data volume reduction, and device miniaturization capacity. Results of our experiments show new insight into applications of biological diagnose and robotic vision.

Published in Nanophotonics

ISSN: 2192-8606 (Print); 2192-8614 (Online)
Publisher: De Gruyter
Country of publisher: Germany
LCC subjects: Science: Physics
Website: https://www.degruyter.com/journal/key/nanoph/html#submit

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