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:
Jul. 13, 2021
Filed:
May. 26, 2016
Nikon Corporation, Tokyo, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
A variable magnification optical system comprising, in order from an object side, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, a third lens group G3 having negative refractive power and a rear group comprising at least one lens group and having positive refractive power as a whole; upon varying magnification, air intervals between the neighboring lens groups being varied; and said first lens group G1 consisting of lens component(s) having negative refractive power, thereby a variable magnification optical system having excellent optical performance, an optical apparatus and a method for manufacturing the variable magnification optical system, being provided.