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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.:

US 10261292 B1

PDFFull Text
Date of Patent:
Apr. 16, 2019

Filed:

Jan. 29, 2017

Variable power optical system, optical device, and method for producing variable power optical system

Applicant:

Nikon Corporation, Minato-ku, Tokyo, JP;

Inventor:

Takeru Uehara, Ageo, JP;

Assignee:

Nikon Corporation, Tokyo, JP;

Attorney:

Shapiro, Gabor and Rosenberger, PLLC

Primary Examiner:

Evelyn A Lester

Int. Cl.
CPC ...
G02B 15/14 (2006.01); G02B 15/163 (2006.01); G02B 15/20 (2006.01); G02B 15/173 (2006.01); G02B 15/177 (2006.01); G02B 9/12 (2006.01); G02B 13/18 (2006.01); G02B 15/167 (2006.01); G02B 5/00 (2006.01); G02B 15/15 (2006.01); G02B 13/00 (2006.01); G02B 27/64 (2006.01); G02B 15/16 (2006.01);
U.S. Cl.
CPC ...
G02B 15/163 (2013.01); G02B 15/173 (2013.01); G02B 15/177 (2013.01); G02B 15/20 (2013.01); G02B 5/005 (2013.01); G02B 9/12 (2013.01); G02B 13/009 (2013.01); G02B 13/18 (2013.01); G02B 15/14 (2013.01); G02B 15/15 (2013.01); G02B 15/16 (2013.01); G02B 15/167 (2013.01); G02B 27/646 (2013.01);
Abstract

A variable magnification optical system comprises, in order from an object side, 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 first lens group (G) comprises a front group (G) having negative refractive power and a rear group (G) having positive refractive power. Focusing is carried out by moving the front group (G). The first lens group (G), the second lens group (G) or at least a portion of the third lens group (G) is moved in a direction having a directional component perpendicular to the optical axis as a vibration reduction lens group.

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