公开(公告)号：US20230384481A1

公开(公告)日：2023-11-30

申请号：US18448619

申请日：2023-08-11

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

Inventor： Yunhe Lai ,  Ying Suet Lau ,  Qingyi Yang ,  Jinbo Jiang

IPC: G02B1/00 ,  G02B3/02

CPC classification number: G02B1/002 ,  G02B3/02 ,  G02B2207/101

Abstract: Systems and methods which provide single nanostructure-integrated metalens configurations implementing light focusing 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. One or more phase maps configured for light focusing may be computed with respect to one or more design wavelengths selected for focusing. The consolidated phase retardation requirements of the one ore more phase maps may be satisfied by a preconfigured mapping which defines the phase distribution for the nanostructures of a single nanostructure-integrated metalens implementation.

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.