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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 10642008 B1

PDFFull Text
Date of Patent:
May. 05, 2020

Filed:

Jun. 20, 2018

Zoom lens and imaging apparatus

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Masaru Yonezawa, Saitama, JP;

Shinkichi Ikeda, Saitama, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Evelyn A Lester

Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/167 (2006.01); G02B 15/20 (2006.01); G02B 15/177 (2006.01); G02B 13/18 (2006.01); G02B 13/02 (2006.01); G02B 9/34 (2006.01); G02B 3/04 (2006.01); G02B 13/00 (2006.01); G02B 9/60 (2006.01); G02B 9/64 (2006.01); G02B 9/62 (2006.01); G02B 5/00 (2006.01);
U.S. Cl.
CPC ...
G02B 15/167 (2013.01); G02B 13/02 (2013.01); G02B 13/18 (2013.01); G02B 15/177 (2013.01); G02B 15/20 (2013.01); G02B 3/04 (2013.01); G02B 5/005 (2013.01); G02B 9/34 (2013.01); G02B 9/60 (2013.01); G02B 9/62 (2013.01); G02B 9/64 (2013.01); G02B 13/009 (2013.01); G02B 13/0015 (2013.01); G02B 13/0045 (2013.01); G02B 15/14 (2013.01);
Abstract

The zoom lens consists of, in order from the object side, a first lens group that has a positive refractive power and remains stationary during zooming, a plurality of movable lens groups that move during zooming, and a final lens group that has a positive refractive power and remains stationary during zooming. The first lens group consists of, in order from the object side, a first lens group front group that has a negative refractive power, a first lens group intermediate group that has a positive refractive power and moves during focusing, and a first lens group rear group that has a positive refractive power. The first lens group front group has, successively in order from a position closest to the object side, a negative meniscus lens concave toward an image side, and a negative lens concave toward the object side. The components of the zoom lens satisfy predetermined conditional expressions.

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