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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 9645369 B1

PDFFull Text
Date of Patent:
May. 09, 2017

Filed:

Apr. 14, 2015

Zoom lens and image pickup apparatus including the same

Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventor:

Shoichi Takemoto, Saitama, JP;

Assignee:

CANON KABUSHIKI KAISHA, Tokyo, JP;

Attorney:

Carter, DeLuca, Farrell & Schmidt, LLP

Primary Examiner:

Bumsuk Won

Assistant Examiner:

Collin X Beatty

Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 9/34 (2006.01); G02B 15/173 (2006.01); G02B 15/16 (2006.01); G02B 15/163 (2006.01); G02B 15/167 (2006.01);
U.S. Cl.
CPC ...
G02B 15/173 (2013.01); G02B 15/16 (2013.01); G02B 15/163 (2013.01); G02B 15/167 (2013.01);
Abstract

A zoom lens includes, in order from an object side to an image side: a first lens unit having a positive refractive power that does not move for zooming; a second lens unit having a negative refractive power that moves during zooming; a third lens unit having a positive refractive power that moves during zooming; and at least one lens unit having a positive refractive power, and focal lengths of the zoom lens at a wide angle end and a telephoto end, a maximum value of a half angle of field at the wide angle end, and products of lateral magnifications of lens units arranged on the image side of the third lens unit in a state in which focus is at infinity at the telephoto end and the wide angle end are appropriately set.

Find Patent Forward Citations

Takemoto, Shoichi. (2017). Zoom lens and image pickup apparatus including the same (U.S. Patent No. 9645369). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9645369

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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