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:
Nov. 17, 2020
Filed:
Aug. 23, 2018
Fujifilm Corporation, Tokyo, JP;
Yasutaka Shimada, Saitama, JP;
Takuya Tanaka, Saitama, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
The zoom lens consists of, in order from the object side, a positive first lens group G, a negative second lens group G, a negative third lens group G, a stop, and a positive fourth lens group G. During zooming, the first lens group Gand the fourth lens group Gremain stationary, and the second lens group Gand the third lens group Gmove. The first lens group Gconsists of, in order from the object side, a negative first lens group front group GA that remains stationary during focusing, a positive first lens group intermediate group GB that moves during focusing, and a positive first lens group rear group GC that remains stationary during focusing. The following conditional expression relating to an Abbe number νn1A2 of the second negative lens from the object side is satisfied: 65<νn1A2<110.