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:
Feb. 19, 2013
Filed:
Jul. 20, 2011
Yoshiaki Kurioka, Osaka, JP;
Takehiro Nishioka, Nara, JP;
Yoshiaki Kurioka, Osaka, JP;
Takehiro Nishioka, Nara, JP;
Panasonic Corporation, Kadoma-shi, JP;
Abstract
A zoom lens system comprising: a front unit having negative optical power as a whole and including a first lens unit located closest to the object side; and a rear unit having positive optical power as a whole, wherein at least the front unit moves along an optical axis in zooming, the first lens unit is composed of at most three lens elements, the rear unit includes a lens unit having an aperture diaphragm between lens elements, an air space between which is not varied in zooming, a sub lens unit comprising a part of a lens unit constituting the rear unit moves in a direction perpendicular to the optical axis, and the condition: 0.1<BF/f<2.0 (ω>72°, FNO<2.9, BF is a back focal length of the entire system at a wide-angle limit, fis a focal length of the entire system at a wide-angle limit, ωis a view angle at a wide-angle limit, FNOis an F-number at a wide-angle limit) is satisfied; an imaging device; and a camera are provided.