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:
Oct. 17, 2023
Filed:
Apr. 16, 2021
Nikon Corporation, Tokyo, JP;
Saburo Masugi, Kawasaki, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A zoom lens (ZL) comprises, in order from an object: a first lens group (G) having negative refractive power; an aperture stop (S); a second lens group (G) having positive refractive power; a third lens group (G) having negative refractive power; and a fourth lens group (G) having positive refractive power. In this zoom lens (ZL), upon zooming from a wide angle end state to a telephoto end state, a distance between the aperture stop (S) and the first lens group (G), a distance between the aperture stop (S) and the second lens group (G), and a distance between the aperture stop (S) and the third lens group (G) are changed and the aperture stop (S) is moved in an optical axis direction.