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:
Oct. 21, 2025
Filed:
Aug. 10, 2021
Interdigital Ce Patent Holdings, Sas, Paris, FR;
Valter Drazic, Betton, FR;
Oksana Shramkova, Liffré, FR;
InterDigital CE Patent Holdings, SAS, Paris, FR;
Abstract
Embodiments include an optical system that may be included in a waveguide display. A waveguide apparatus according to some embodiments includes an in-coupler grating having a first grating vector Gsubstantially perpendicular to a first axis, x; a first eye pupil expander grating having a second grating vector Gand a first angle Φwith respect to the first axis; a second eye pupil expander grating having a third grating vector Gand an angle substantially equal to 90°+Φwith respect to the first axis; and an out-coupler grating having a fourth grating vector Gsubstantially perpendicular to the first axis. Example embodiments describe relationships among the grating vectors, the angle Φ, and associated parameters to achieve a satisfactory field of view while reducing distortion.