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 10739556 B1

Date of Patent:

Aug. 11, 2020

Filed:

Sep. 17, 2018

Imaging lens and imaging apparatus

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Shunsuke Miyagishima, Saitama, JP;

Tetsuya Ori, Saitama, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Christopher Stanford

Int. Cl.

CPC ...

G02B 9/34 (2006.01); G02B 13/00 (2006.01); G02B 27/64 (2006.01); G02B 13/02 (2006.01); G02B 15/14 (2006.01);

U.S. Cl.

CPC ...

G02B 9/34 (2013.01); G02B 13/004 (2013.01); G02B 13/006 (2013.01); G02B 13/02 (2013.01); G02B 27/646 (2013.01); G02B 13/0045 (2013.01); G02B 15/144 (2019.08); G02B 15/144103 (2019.08); G02B 15/144111 (2019.08);

Abstract

The imaging lens consists of, in order from an object side, a first lens group having a positive refractive power, a second lens group having a positive refractive power, a stop, a third lens group having a negative refractive power, and a fourth lens group. The first lens group has, in order from the object side, a positive single lens, and two or more cemented lenses. The second lens group consists of a positive lens and a negative lens. During image blur correction, only the third lens group moves. A conditional expression relating to the back focal length Bf and the lens system total length TTL is satisfied: 2<TTL/Bf<3.6.

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