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. 08, 2016
Filed:
Aug. 04, 2015
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Satoshi Kuzuhara, Hyogo, JP;
Tsuneo Uchida, Chiba, JP;
Abstract
A zoom lens system comprising a positive first lens unit; a negative second lens unit; and subsequent five or six lens units, wherein an aperture diaphragm is provided, intervals between the adjacent lens units vary in zooming, the first lens unit moves in zooming and is fixed in focusing, and the conditions: BF/f<0.66, D/L>0.42, and D/Y<2.00 (BF: distance from an image-side surface apex of a most-image-side lens element to an image surface, f: focal length of system at wide-angle limit, D: sum of optical axial thicknesses of the lens units in system, L: overall length of system at wide-angle limit, D: maximum of air spaces between the lens elements constituting system at wide-angle limit, Y=f×tan(ω), f: focal length of system at telephoto limit, ω: half view angle at telephoto limit) are satisfied.