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.

Date of Patent:
Feb. 11, 2025

Filed:

Mar. 07, 2022
Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventor:

Masaru Amano, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 15/177 (2006.01); G02B 13/16 (2006.01); G02B 15/14 (2006.01);
U.S. Cl.
CPC ...
G02B 15/177 (2013.01); G02B 13/16 (2013.01); G02B 15/1461 (2019.08);
Abstract

The zoom lens consists of a first optical system including a lens at a position closest to the magnification side and a second optical system forming an intermediate image in order from the magnification side. The first optical system reforms the intermediate image on a magnification side imaging plane. The second optical system includes a lens group including an aperture stop, having a negative refractive power, and moving during zooming. The zoom lens satisfies a conditional expression: 0.1<f2w/fAp<2.1, where fAp is a focal length of the lens group having the aperture stop and f2w is a focal length of the second optical system at a wide angle end.


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