Achromatic metalens imaging for camera system

• Main Author: Tao, Rufei
• Other Authors: Luo Yu
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2021
• Subjects: Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/150505
• Institution: Nanyang Technological University

Metalens is one of the most advanced lens technology. Basing on the technique of metasurface, the metalens can realize a negative refraction, which can provide a larger bending angle as well as higher numerical aperture(NA) compared with traditional lens. In this dissertation, a novel design of metalens is established in Lumerical FDTD simulation, which is used to focus a mid-infrared band plane wave. In order to establish that metalens, a number of units which can bend the light with a particular angle are built, and the main task is finding the proper structure and size of those units to get a considerable efficiency. Then the performance of the metalens can be represented by analyzing the results from a line combination of those units.