公开(公告)号：US20230375747A1

公开(公告)日：2023-11-23

申请号：US17746508

申请日：2022-05-17

Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.

Inventor： Yunhe Lai ,  Haoyuan Bai ,  Qingyi Yang ,  Jinbo Jiang

IPC: G02B1/00 ,  G02B27/30 ,  G02B27/00

CPC classification number: G02B1/002 ,  G02B27/30 ,  G02B27/0012 ,  G02B2207/101 ,  G01B11/22

Abstract: Systems and methods which provide single nanostructure-integrated metalens configurations implementing projector and light shaper functionality are described. A single nanostructure-integrated metalens may comprise an optical substrate having a preconfigured mapping of integrated nanostructures providing metasurfaces for modulating the behaviors of electromagnetic waves to implement a thin, flat lens. A period distance for the nanostructures, a height of the nanostructures, and a quantization for lateral sizes of the nanostructures may be selected for a particular single nanostructure-integrated metalens configuration. A first phase map may be computed with respect to structured light generation and a second phase map may be computed with respect to light collimation, wherein fusion of these phase maps may be used to define a preconfigured mapping for the nanostructures of a single nanostructure-integrated metalens implementation. The phase distribution of the first phase map may be inverse designed, such as using an inverse phase design technique.