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:
Nov. 05, 2024
Filed:
Jun. 29, 2023
Snap Inc., Santa Monica, CA (US);
David Woods, Chinnor, GB;
Snap Inc., Santa Monica, CA (US);
Abstract
There is provided a projection display, and a method for illuminating a projection display. The projection display comprising a waveguide comprising an input grating having a plurality of linear diffractive features, the input grating configured to couple in light into the waveguide, and an array of LEDs configured to form an illumination pupil which is optically relayed as an input pupil onto the input grating, such that at the input grating the input pupil has a shape that is larger in a direction parallel to the linear diffractive features than in a direction perpendicular to the linear diffractive features.
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