Title:
ZOOM LENS AND IMAGING DEVICE AND IMAGING SYSTEM HAVING THE SAME
Document Type and Number:
Japanese Patent JP2022053697
Kind Code:
A
Abstract:
To provide a zoom lens with a high-magnification telephoto-zoom which can exhibit an excellent optical performance for all the range of the zoom, and an imaging device and an imaging system having the zoom lens.SOLUTION: The zoom lens includes: a first lens group with a positive refractive power; a second lens group with a negative refractive power; a third lens group with a negative refractive power; and a subsequent group including a plurality of lens groups, which are arranged in that order from an object side to an image side. At zooming, at least a first lens group and a second lens group move. The second lens group is made of one negative lens. The respective amounts of movement of the first lens group and the second lens group at zooming and the Abbe number of the negative lens are set properly.SELECTED DRAWING: Figure 1
Inventors:
SHINOHARA KENJI
Application Number:
JP2020160477A
Publication Date:
April 06, 2022
Filing Date:
September 25, 2020
Export Citation:
Assignee:
CANON KK
International Classes:
G02B15/20; H04N5/225; H04N5/232
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Tomoya Hirayama
Atsuya Mizumoto
Tomoya Hirayama