Title:
METASURFACE, METALENS, AND METALENS ARRAY WITH CONTROLLABLE ANGULAR FIELD-OF-VIEW
Document Type and Number:
WIPO Patent Application WO/2022/174120
Kind Code:
A8
Abstract:
A metalens and a metalens array having a bounded angular field of view are disclosed. The metalens includes a substrate and a two-dimensional (2D) grid over the substrate to divide the substrate into a 2D array of meta-units. Each meta-unit in the 2D array includes a nanostructure and a portion of the substrate that supports the nanostructure. Moreover, each meta-unit is configured with an angular-dependent transmission or reflection coefficient that decreases with an increasing incident angle of an illumination. Moreover, the metalens passes an incident light having an incident angle less than a cutoff angle and rejects an incident light having an incident angle greater than the cutoff angle. The metalens can be used a base unit for constructing a metalens array by tiling copies of the metalens into a 2D array of the metalens to achieve a significantly larger field-of-view.
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Inventors:
YANG WEIJIAN (US)
HU JUNJIE (US)
HU JUNJIE (US)
Application Number:
PCT/US2022/016237
Publication Date:
March 30, 2023
Filing Date:
February 11, 2022
Export Citation:
Assignee:
UNIV CALIFORNIA (US)
International Classes:
G02B3/00; G02B1/00; G02B3/08; G02B5/18; G02B6/32; G02B13/00
Attorney, Agent or Firm:
VAUGHAN, Daniel E. (US)
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