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:
Sep. 30, 2025
Filed:
Jan. 30, 2023
Max-planck-gesellschaft Zur Förderung Der Wissenschaften E.v., Munich, DE;
Huazhong University of Science and Technology, Wuhan, CN;
Stephan Götzinger, Erlangen, DE;
Luis Esteban Alejandro Morales, Erlangen, DE;
Xuewen Chen, Wuhan, CN;
Wancong Li, Wuhan, CN;
Abstract
An antenna structure for directing light is disclosed. The antenna structure includes a reflector having a reflective surface and a ring-shaped dielectric grating arranged at the reflective surface and extending concentrically along a center axis perpendicular to the reflective surface and forming an omnidirectional reflector surrounding a low-index center portion of the ring-shaped dielectric grating. The antenna structure is configured to outcouple light emitted inside the low-index center portion through an upper end of the dielectric grating along the center axis with a Gaussian beam profile projection efficiency η of at least 65%. A light emitting device and a method for designing an antenna structure are also disclosed.