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:
May. 13, 2025
Filed:
Sep. 29, 2020
Hitachi-lg Data Storage, Inc., Tokyo, JP;
Toshiteru Nakamura, Tokyo, JP;
Takuma Kuno, Tokyo, JP;
Ryuji Ukai, Tokyo, JP;
Takahiro Mouri, Tokyo, JP;
Masahito Uchiyama, Tokyo, JP;
HITACHI-LG DATA STORAGE, INC., Tokyo, JP;
Abstract
A head-mounted display achieves both miniaturization and high efficiency of an optical system and expansion of an eye box. In order to achieve the above-described object, a head-mounted display that displays an image within a visual field of a user is provided. The head-mounted display includes: an image display unit that generates an image to be displayed; a projection unit that projects image light from the image display unit; an image rotation and replication unit that expands an eye box of projection light from the projection unit; and a waveguide unit that transmits image light from the image rotation and replication unit to a pupil of the user. The image rotation and replication unit includes an incidence surface, an emission surface, and at least two reflection surfaces, and an angle formed by the incidence surface and the emission surface is greater than 90°.