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:
Dec. 28, 2021
Filed:
May. 20, 2019
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventor:
Masato Kondo, Saitama, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/02 (2006.01); G02B 13/18 (2006.01); G02B 9/34 (2006.01); H04N 5/232 (2006.01); G02B 7/10 (2021.01); G02B 15/14 (2006.01);
U.S. Cl.
CPC ...
G02B 9/34 (2013.01); G02B 7/10 (2013.01); G02B 15/144113 (2019.08); H04N 5/23296 (2013.01);
Abstract
The zoom lens consists of a positive first lens group, a negative second lens group moving during zooming, a positive third lens group moving during zooming, and a positive fourth lens group which does not move during zooming in order from an object side. Only the third lens group moves during focusing. A lens surface closest to an object is a convex surface. A conditional expression of 5<TL/(Y×ft)<9.5 which is related to a total optical length TL at a telephoto end, a maximum image height Y, and a focal length ft of the entire system at the telephoto end in a state in which an object at infinity is in focus is satisfied.