Title:
ズームレンズおよび撮像装置
Document Type and Number:
Japanese Patent JP6448851
Kind Code:
B2
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.
Inventors:
Motoi Daejeon
Takuya Tanaka
Takuya Tanaka
Application Number:
JP2018509128A
Publication Date:
January 09, 2019
Filing Date:
March 22, 2017
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B15/20; G02B13/18
Domestic Patent References:
| JP2015075523A | ||||
| JP2014063026A | ||||
| JP2013092557A | ||||
| JP2014038238A | ||||
| JP2014081464A | ||||
| JP2009128491A | ||||
| JP6337350A | ||||
| JP2015052781A |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office