The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2025
Filed:
Feb. 27, 2020
Shanghai Jiao Tong University, Shanghai, CN;
Zhicheng Ye, Shanghai, CN;
Jun Zheng, Shanghai, CN;
Shanghai Jiao Tong University, Shanghai, CN;
Abstract
The reflection-asymmetric metal grating polarization beam splitter comprises a substrate, and a first grating composed of first mediums and first metals, and first light-absorbing materials are provided on the upper surfaces or side surfaces of the first metals. A plurality of second materials are provided at equal intervals longitudinally along the upper surfaces of the first metals to form a second grating. The first light-absorbing materials are closely provided on the upper surfaces of the first metals between two adjacent second materials, and second light-absorbing materials are closely provided on the upper surfaces and/or side surfaces of the second materials. The second materials have a greater thickness than the first light-absorbing materials. Second mediums are filled in spaces between adjacent second materials above the first light-absorbing materials.