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:
Apr. 09, 2024
Filed:
Feb. 03, 2020
Snap Inc., Santa Monica, CA (US);
Arseny Alexeev, Abingdon, GB;
Sebastien De Cunsel, Abingdon, GB;
Sophia Fox, Abingdon, GB;
Choon How Gan, Abingdon, GB;
Ciaran Phelan, Abingdon, GB;
Gleb Siroki, Abingdon, GB;
Mohmed Salim Valera, Abingdon, GB;
Kai Wang, Abingdon, GB;
Snap Inc., Santa Monica, CA (US);
Abstract
There is disclosed a waveguide for use in an augmented reality or virtual reality display. The waveguide comprises a plurality of optical structures in a photonic crystal. The plurality of optical structures are arranged in an array to provide at least two diffractive optical elements. Each of the two diffractive optical elements is configured to receive light from an input direction and couple it towards the other diffractive optical element which can then act as an output diffractive optical element, providing outcoupled orders towards a viewer. The plurality of optical structures respectively have a shape, when viewed in the plane of the waveguide, comprising twelve substantially straight sides, six of the sides having respective normal vectors at a first angle, and the other six of the sides having respective normal vectors at a second angle which is different to the first angle.