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:
Aug. 19, 2025
Filed:
Mar. 09, 2021
Sony Group Corporation, Tokyo, JP;
Atsushi Takahashi, Tokyo, JP;
SONY GROUP CORPORATION, Tokyo, JP;
Abstract
Provided is an optical device that includes a light guide plate that totally reflects and guides incident light, a first optical element on the light guide plate, an input optical element that is on the light guide plate and introduces the incident light into the light guide plate, a second optical element that is on the light guide plate and bends light propagated by total reflection in the light guide plate, and an output optical element that is on the light guide plate and emits light propagated by total reflection in the light guide plate, to an outside of the light guide plate. The first optical element has substantially the same grating vector as a grating vector of the input optical element, and the first optical element and the input optical element face each other with the second optical element interposed therebetween.