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:
May. 13, 2025
Filed:
Dec. 20, 2018
Nikon Corporation, Tokyo, JP;
Mami Muratani, Tokyo, JP;
Fumiaki Ohtake, Tokyo, JP;
Nikon Corporation, Tokyo, JP;
Abstract
An optical system comprises, in order from an object side, a front group GF having positive refractive power, an aperture stop S and a rear group GR. The front group FR comprises a front focusing group GFF having positive refractive power, and the rear group GR comprises a rear focusing group GRF having positive refractive power, upon focusing the front focusing group GFF and the rear focusing group GRF being moved toward the object side, and a predetermined condition being satisfied. Thus, an optical system having a superb optical performance, an optical equipment equipped therewith and a manufacturing method for the optical system are provided.