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:
Aug. 11, 2026
Filed:
Oct. 18, 2023
Apple Inc., Cupertino, CA (US);
Brandon Born, Sunnyvale, CA (US);
Abstract
A display may include a waveguide and a surface relief grating (SRG) structure on the waveguide. The SRG structure may perform expand image light propagating in the waveguide. The SRG structure may also couple the expanded image light out of the waveguide and towards an eye box. The SRG structure may include at least first and second SRGs that expand the image light in opposite directions. The first SRG may couple the image light expanded by the second SRG out of the waveguide and the second SRG may couple the image light expanded by the first SRG out of the waveguide. Modulation functions may be used to vary the grating strengths of the SRGs in the SRG structure between brow and cheek regions of the SRG structure. Diffraction efficiency of the SRG structure may additionally or alternatively be varied between nasal and temple regions of the SRG structure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile