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:
Mar. 09, 2021
Filed:
Mar. 21, 2019
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Hirofumi Okubo, Matsumoto, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01); G03B 21/14 (2006.01); G02B 7/00 (2021.01); G02B 7/04 (2021.01);
U.S. Cl.
CPC ...
G02B 7/003 (2013.01); G02B 7/04 (2013.01); G03B 21/142 (2013.01);
Abstract
A centering pin pushes an inclining surface provided as part of a side section of a lens frame that accommodates a centering target lens that is a centering target lens group to allow the centering target lens to move in a centering direction. In this process, an end surface of the lens frame is always urged against a reference surface that positions the lens frame attached to an attachment section of a lens barrel in the optical axis direction.