Title:
Zoom lens
Document Type and Number:
Japanese Patent JP6091868
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a zoom lens which maintains good performance while zooming, focusing, and image-shifting and which can be made compact.SOLUTION: A zoom lens comprises, in order from the object side, a first lens group having negative refractive power, a second lens group having positive refractive power, a third lens group having negative refractive power, and a fourth lens group having positive refractive power. When zooming from the wide angle end to the telephoto end, the first lens group and the fourth lens group are stationary in the optical axis direction. The second lens group includes, in order from the object side, a second-A lens group having positive refractive power and a second-B lens group having positive refractive power, and a capability to focus on an object at a distance in a range from close distance to infinity is achieved by moving the second-B lens group in the optical axis direction. Images are shifted by shifting the third lens group in a direction perpendicular to the optical axis.
Inventors:
Hiroyuki Hagiwara
Application Number:
JP2012265560A
Publication Date:
March 08, 2017
Filing Date:
December 04, 2012
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
G02B15/167; G02B13/18
Domestic Patent References:
| JP2012027262A | ||||
| JP2012181350A | ||||
| JP2012047813A | ||||
| JP2011237737A | ||||
| JP2004133338A | ||||
| JP9179026A | ||||
| JP63032513A |
Foreign References:
| WO2011145288A1 |
Attorney, Agent or Firm:
Ken Ieiri