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. 16, 2025
Filed:
Mar. 14, 2023
Adeia Guides Inc., San Jose, CA (US);
Yuval Ofir, Kfar Ha-Oranim, IL;
Adeia Guides Inc., San Jose, CA (US);
Abstract
Head-mounted displays (HMD) or other suitable optical equipment with waveguides comprising an optical element comprising a diffractive grating having a plurality of zones. The plurality of zones may comprise a first zone, a second zone and a third zone. Substantially all of a plurality of structures defining the first zone may comprise a first material, substantially all of a plurality of structures defining the third zone comprises a second material, a plurality of structures defining the second zone comprises each of the first material and the second material, and a refractive index of the second material may be higher than a refractive index of the first material.