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:
Feb. 10, 2026
Filed:
Dec. 07, 2022
Seiko Epson Corporation, Tokyo, JP;
Eiji Morikuni, Matsumoto, JP;
Yuta Tokuno, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An optical system includes a first optical element, and a second optical element arranged at a reduction side of the first optical element. The first optical element has a first reflecting surface having a concave shape. The second optical element has a first transmission surface, a second reflecting surface arranged at the reduction side of the first transmission surface, and a second transmission surface arranged at the reduction side of the second reflecting surface. A first optical axis of the first reflecting surface is parallel to a second optical axis of the first transmission surface. At least one of the first transmission surface, the second reflecting surface, and the second transmission surface has power.