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. 07, 2017
Filed:
Jul. 21, 2015
Nikon Corporation, Chiyoda-ku, Tokyo, JP;
Toshiyuki Shimada, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
Provided is a zoom lens (ZL) including, in order from an object along an optical axis: a first lens group (G) having negative refractive power; a second lens group (G) having positive refractive power, and a third lens group (G) having a positive refractive power. At least the first lens group (G) and the second lens group (G) are moved along the optical axis upon zooming from a wide-angle end state to a telephoto end state, so that the distance between the first lens group (G) and the second lens group (G) decreases, and the distance between the second lens group (G) and the third lens group (G) increases, the first lens (G) includes one positive lens, and the second lens (G) includes one negative lens.