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:
Jan. 04, 2022
Filed:
Sep. 30, 2016
Nikon Corporation, Tokyo, JP;
Keiichi Nakamura, Tokyo, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
A zoom lens comprises, in order from an object: a first lens group (G) having positive refractive power; a second lens group (G) having negative refractive power; a third lens group (G) having positive refractive power; a fourth lens group (G) having negative refractive power; and a fifth lens group (G) having positive refractive power, in which the first to the fifth lens groups (Gto G) each move in an optical axis direction upon zooming from a wide angle end state to a telephoto end state, at least a part of the fourth lens group (G) is configured to serve as a focusing lens group to move in the optical axis direction upon focusing, the first lens group (G) consists of two lenses, and the following conditional expression is satisfied.0.30<3<0.8