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. 04, 2026
Filed:
Dec. 07, 2023
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Satoshi Kuzuhara, Osaka, JP;
Kazuhiro Minami, Osaka, JP;
Abstract
An optical system includes a light guide for guiding an image light ray which is output from a display element and forms an image, to a field of view region of a user as a virtual image. The light guide includes a body having a plate shape, and an in-coupling region and an exit region which are defined in the body. The in-coupling region is configured to allow the image light ray incident from the display element to propagate within the body. The exit region is configured to allow the image light ray propagating within the body to emerge from the body toward the field of view region. The in-coupling region includes a periodic structure constituted by recessed or protruded parts in relation to a thickness direction of the body which have periodicity in three directions intersecting each other within a plane perpendicular to the thickness direction of the body.