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. 31, 2026
Filed:
Dec. 02, 2021
Nikon Corporation, Tokyo, JP;
Keigo Koida, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A zoom optical system that can achieve size and weight reduction and has high optical performance, an optical apparatus, and a method for manufacturing the zoom optical system are provided. A zoom optical system GL used in an optical apparatus such as a cameraincludes a first lens group Ghaving positive refractive power and disposed closest to an object side, a second lens group Gand a rear lens group GL, spaces between the lens groups change at zooming, the first lens group Gincludes a positive lens Lclosest to the object side, and the zoom optical system satisfies a condition expressed by an expression below,0.30<D1MAX/G1d<0.70 in the expression, D1MAX: maximum air space on an optical axis in the first lens group Gand G1d: thickness of the first lens group Gon the optical axis.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile