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. 18, 2025
Filed:
Sep. 15, 2021
Seiko Epson Corporation, Tokyo, JP;
Eiji Morikuni, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An optical device includes a first optical system having an optical element, a second optical system having a lens and disposed at a reduction side of the first optical system, a first holding member holding the optical element, and a first movement mechanism configured to move the first holding member in optical axis directions along an optical axis of the optical element. The optical element has a reflection surface. The first movement mechanism has a fixing member supporting the first holding member rotatably around a rotation axis and a transport portion configured to move the first holding member along the optical axis directions according to rotation of the first holding member. The reflection surface has a shape rotationally symmetrical with respect to the rotation axis. The rotation axis and the optical axis are the same axis.