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. 09, 2025
Filed:
Jul. 12, 2024
Snap Inc., Santa Monica, CA (US);
Ciaran Phelan, Wallingford, GB;
Sophia Antonia Fox, Abingdon, GB;
Mohmed Salim Valera, Sutton Coldfield, GB;
Arseny Alexeev, Abingdon, GB;
Snap Inc., Santa Monica, CA (US);
Abstract
An optical structure for an augmented reality display includes a waveguide and an input diffractive optical structure to receive light from a projector and couple the received light into the waveguide. An output diffractive optical structure, comprising first and second diffractive optical elements overlaid on one another in or on the waveguide, receives light from the input diffractive optical element in an input direction. The first diffractive optical element has a high diffraction efficiency relative to the second diffractive optical element. A first portion of the first diffractive optical element couples light from the input direction towards a second portion, and the second diffractive optical element couples light from the input direction away from the second portion. The second portion couples light from the input direction towards the first portion, and the second diffractive optical element couples light from the input direction away from the first portion.