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:
Dec. 17, 2013
Filed:
Sep. 05, 2012
Keiki Yoshitsugu, Hyogo, JP;
Takakazu Bito, Osaka, JP;
Keiki Yoshitsugu, Hyogo, JP;
Takakazu Bito, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A zoom lens system comprises: a negative first lens unit being composed of two lens elements; a positive second lens unit; and a positive third lens unit, wherein the lens units are moved such that an interval between the first lens unit and the second lens unit decreases and an interval between the second lens unit and the third lens unit increases in zooming, so that magnification change is achieved, wherein the first lens unit is composed of a negative first lens element and a positive second lens element, and wherein the condition is satisfied: 0.50<f/f<1.00 where, Z=f/f>4.0, ω>35, f: a focal length of the second lens element, f, f: focal lengths of the entire system at a telephoto limit, a wide-angle limit, ω: a half view angle at a wide-angle limit.