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.:
Date of Patent:
Nov. 05, 2013
Filed:
Sep. 10, 2012
Takakazu Bito, Osaka, JP;
Takakazu Bito, Osaka, JP;
Panasonic Corporation, Kadoma-shi, JP;
Abstract
A zoom lens system comprising: a positive first lens unit; a negative second lens unit; a positive third lens unit; and one or more subsequent lens units, wherein in zooming, the first to third lens units are moved along an optical axis to perform magnification change, a lens unit α which is one of the subsequent lens units does not move during zooming, but moves during transition from an imaging state to an accommodated state, and the conditions: 0.8<L/f<1.2, 0.12<D/f<0.30 and f/f>9.0 (L: overall length of lens system at a telephoto limit, D: axial air-equivalent length between a most image side surface of the lens unit α and an image surface, f: focal length of the lens unit α, fand f: focal lengths of the entire system at a wide-angle limit and a telephoto limit) are satisfied.