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:
Aug. 02, 2016
Filed:
Nov. 29, 2014
Nikon Corporation, Chiyoda-ku, Tokyo, JP;
Satoshi Miwa, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
Provided is a photographing lens (ML) including a first lens group (G) having positive refractive power, a second lens group (G) having negative refractive power, and a third lens group (G) having positive refractive power, the photographing lens being configured such that the second lens group (G) moves along the optical axis upon focusing from an object at infinity to an object at a finite distance. The first lens group (G) includes a front lens group (G) and a rear lens group (G) having a longest air interval from the front lens group (G) in the first lens group (G), and the second lens group (G) includes a negative lens (L) and a cemented lens in which a positive lens () and a negative lens () are cemented in order from the object.