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.

Date of Patent:
Jul. 03, 2018

Filed:

Jan. 30, 2017
Applicant:

Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;

Inventors:

Takahiro Kitada, Osaka, JP;

Shunichiro Yoshinaga, Osaka, JP;

Takakazu Bito, Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/64 (2006.01); G02B 15/14 (2006.01); G02B 15/163 (2006.01); G02B 15/20 (2006.01); G02B 15/22 (2006.01);
U.S. Cl.
CPC ...
G02B 15/163 (2013.01); G02B 15/20 (2013.01); G02B 15/22 (2013.01); G02B 27/646 (2013.01);
Abstract

The zoom lens system includes a first lens group with positive power, a second lens group with negative power, a third lens group with positive power, a fourth lens group with negative power, and a fifth lens group with positive power. An aperture stop is provided between the second and the third lens groups. The third lens group includes lens element Land Lwith positive power, lens element Lwith negative power, and lens element Lwith positive power. The lens elements Land Lare cemented. The lens element Lcorrects image blurring. The fourth lens group moves when focusing. When zooming, the first to the fourth lens group move. Here, condition (1) below is satisfied.0.24<33<3.0  (1)


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