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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.:

US 12379573 B1

PDFFull Text
Date of Patent:
Aug. 05, 2025

Filed:

Jun. 10, 2021

Zoom lens and imaging apparatus

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventor:

Ryosuke Nagami, Saitama, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Studebaker Brackett PLLC

Primary Examiner:

Wyatt A Stoffa

Assistant Examiner:

Samanvitha Sridhar

Int. Cl.
CPC ...
G02B 15/177 (2006.01); G02B 7/14 (2021.01); G02B 9/34 (2006.01); G02B 13/00 (2006.01); G02B 15/14 (2006.01); G02B 27/00 (2006.01); G02B 27/64 (2006.01); H04N 23/55 (2023.01);
U.S. Cl.
CPC ...
G02B 9/34 (2013.01); G02B 7/14 (2013.01); G02B 15/142 (2019.08); G02B 15/144511 (2019.08); G02B 15/177 (2013.01); G02B 27/0037 (2013.01); G02B 27/646 (2013.01); H04N 23/55 (2023.01); G02B 13/009 (2013.01);
Abstract

The zoom lens consists of, in order from the object side, a first lens group that has a negative refractive power; a second lens group that has a positive refractive power; a third lens group that has a negative refractive power; and a fourth lens group that has a positive refractive power. During zooming, in each lens group, distances between the adjacent groups in the direction of the optical axis are changed. The first lens group consists of, in order from the object side, a first lens having a negative refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power. The third lens group consists of a negative lens. During focusing, only the third lens group moves along the optical axis. The zoom lens satisfies predetermined conditional expressions.

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