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:
Mar. 15, 2016
Filed:
Aug. 16, 2012
Takakazu Bito, Osaka, JP;
Shinji Yamaguchi, Osaka, JP;
Yasunori Tochi, Osaka, JP;
Abstract
A zoom lens system comprising: a positive first lens unit; a negative second lens unit; a positive third lens unit; and a subsequent lens unit, wherein the first to third lens units move along an optical axis in zooming, a part of the third lens unit is a third-b lens unit moving in a direction perpendicular to the optical axis, and the conditions: 1.5<(D+D+D)/Ir<2.4, BF/Ir<1.45 and Z=f/f>9.0 (D, D: optical axial thicknesses of the second and third-b lens units, D: an optical axial total thickness of the subsequent lens units, BF: a shortest optical axial distance between an apex of a most image side lens surface and an image surface, Ir=f×tan(ω), f, f: focal lengths of the entire system at a telephoto limit and a wide-angle limit, ω: a half view angle at a telephoto limit) are satisfied.