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:
Sep. 10, 2024
Filed:
Oct. 06, 2021
Applicant:
Nikon Corporation, Tokyo, JP;
Inventors:
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/64 (2006.01); G02B 13/18 (2006.01); G02B 15/20 (2006.01);
U.S. Cl.
CPC ...
G02B 15/20 (2013.01); G02B 13/18 (2013.01); G02B 27/646 (2013.01);
Abstract
A zoom optical system (ZL) comprises a first negative lens group (G) having a negative refractive power; and a second negative lens group (G) disposed closer to an image than the first negative lens group (G), wherein a distance between the first negative lens group (G) and the second negative lens group (G) changes during zooming, at least part of the first negative lens group (G) is movable so as to have a displacement component in a direction perpendicular to an optical axis, at least part of the second negative lens group (G) is movable along the optical axis during focusing, and the following conditional expression,0.50<<2.60is satisfied,where,