Realizing depth measurement and edge detection based on a single metasurface
Author:
Yang Siwen1, Wei Qunshuo1, Zhao Ruizhe1, Li Xin1, Zhang Xue1, Li Yao2, Li Junjie2, Jing Xiaoli1, Li Xiaowei3ORCID, Wang Yongtian1, Huang Lingling1ORCID
Affiliation:
1. Beijing Engineering Research Center of Mixed Reality and Advanced Display , School of Optics and Photonics, Beijing Institute of Technology , Beijing , 100081 , China 2. Beijing National Laboratory for Condensed Matter Physics , Institute of Physics, Chinese Academy of Sciences , Beijing , 100190 , China 3. Laser Micro/Nano-Fabrication Laboratory , School of Mechanical Engineering, Beijing Institute of Technology , Beijing , 100081 , China
Abstract
Abstract
How to simultaneously obtain the depth, edge, and other light information of the scene to accurately perceive the physical world is an important issue for imaging systems. However, such tasks usually require bulky optical components and active illumination methods. Here, we design and experimentally validate a single geometric metasurface that can achieve depth measurement or edge detection under incoherent or coherent light respectively. Double helix point source function is utilized, and three verification experiments are carried out, including double-helix beam calibration, 2D object and 3D object detection, respectively. Additionally, two-dimensional edge detection can also be achieved. This compact imaging system can enable new applications in various fields, from machine vision to microscopy.
Funder
Beijing Municipal Science & Technology Commission, Administrative Commission of Zhongguancun Science Park National Natural Science Foundation of China Beijing Municipal Natural Science Foundation Science and Technology Innovation Program of Beijing Institute of Technology Chinese Polar Environment Comprehensive Investigation and Assessment Programmes Beijing Outstanding Young Scientist Program
Publisher
Walter de Gruyter GmbH
Subject
Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology
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