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. 15, 2024
Filed:
Sep. 13, 2022
Yoshifumi Sudoh, Kanagawa, JP;
Yoshifumi Sudoh, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
In a propagation optical system to propagate light from an image display element to a light guide element, the propagation optical system includes: a prism having a first surface having negative power to which light emitted from the image display element enters; and a lens group having positive power. The prism and the lens group are arranged between the image display element and the light guide element along an optical axis, and the prism is closer to the image display element than to the light guide element.
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