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:
Jun. 13, 2023
Filed:
Sep. 24, 2020
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventor:
Daiki Komatsu, Saitama, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 15/177 (2006.01); G02B 15/20 (2006.01); G02B 27/00 (2006.01); G02B 15/02 (2006.01); G02B 15/10 (2006.01);
U.S. Cl.
CPC ...
G02B 15/177 (2013.01); G02B 15/02 (2013.01); G02B 15/10 (2013.01); G02B 15/20 (2013.01); G02B 27/0025 (2013.01); G02B 27/0075 (2013.01);
Abstract
An extender lens changes a focal length of an entire lens system after replacement to a longer focal length side than a focal length of a master lens by replacing a part of the master lens with the extender lens. The extender lens consists of, in order from an object side to an image side, a first lens group, and a negative second lens group. The first lens group is a lens group that has a positive refractive power as a whole and has a shortest focal length among lens groups consisting of one lens component or a plurality of consecutively arranged lens components. The extender lens satisfies a predetermined conditional expression.