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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.:

US 12411343 B1

PDFFull Text
Date of Patent:
Sep. 09, 2025

Filed:

Jul. 07, 2023

Optical system, virtual image display device, and head-mounted display

Applicant:

Yoshifumi Sudoh, Kanagawa, JP;

Inventor:

Yoshifumi Sudoh, Kanagawa, JP;

Assignee:

RICOH COMPANY, LTD., Tokyo, JP;

Attorney:

XSENSUS LLP

Primary Examiner:

Dmitriy Bolotin

Int. Cl.
CPC ...
G02B 27/01 (2006.01); F21V 8/00 (2006.01); G02B 27/02 (2006.01); G02B 27/14 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 6/0031 (2013.01); G02B 6/0055 (2013.01); G02B 27/025 (2013.01); G02B 27/144 (2013.01); G02B 27/145 (2013.01); G02B 2027/0178 (2013.01);
Abstract

An optical system includes: a first optical portion, on which image light from an image display element is incident; a light guide configured to guide the image light incident from the first optical portion; and a second optical portion configured to direct the image light guided in the light guide to an object. The first optical portion has an anamorphic surface having: a first shape in a first direction; and a second shape in a second direction different from the first direction, the first shape being different from the second shape. The first optical portion forms an intermediate image of the image light.

Find Patent Forward Citations

Sudoh, Yoshifumi. (2025). Optical system, virtual image display device, and head-mounted display (U.S. Patent No. 12411343). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12411343

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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