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:
Aug. 18, 2020
Filed:
Sep. 26, 2018
Fujifilm Corporation, Tokyo, JP;
Motoari Ota, Saitama, JP;
Takuya Tanaka, Saitama, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A zoom lens consists of, in order from an object side, a positive first lens group fixed relative to the image surface during zooming, at least two movable lens groups including a negative second lens group being adjacent to the first lens group, the at least two movable lens groups being movable by changing a distance in an optical-axis direction to an adjacent group during zooming; and a final lens group arranged on the most image side and fixed relative to the image surface during zooming. The first lens group has, continuously in order from the most object side, a first negative lens having a concave surface facing an image side, a second negative lens, and a third positive lens. A predetermined conditional expression relating to the first lens group is satisfied.