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:
Jun. 29, 2021
Snap Inc., Santa Monica, CA (US);
Gleb Siroki, Abingdon, GB;
Sebastien De Cunsel, Abingdon, GB;
Sumanta Talukdar, Chippenham, GB;
Cheng Shi, Oxford, GB;
Tom Vidar Michalsen, Reading, GB;
David Poussin, London, GB;
Mohmed Salim Valera, Sutton Coldfield, GB;
SNAP INC., Santa Monica, CA (US);
Abstract
An optical device for controlling light in an augmented reality display is provided. The optical device includes a waveguide and a diffractive optical element to couple light into the waveguide. The diffractive optical element includes an array of structured grating elements. The structured grating elements are arranged based on a repeating unit cell, each unit cell including at least two grating elements defining an irregular grating structure such that the diffractive optical element produces an asymmetrical diffraction response. Methods of manufacturing the optical device are also provided.