Title:
ZOOM LENS AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/181666
Kind Code:
A1
Abstract:
A zoom lens according to the present invention is configured of: a first lens group having a positive refractive power; a second lens group having a negative reflective power; a middle lens group having at least one positive lens group and having a positive refractive power as a whole; and a rear lens group having at least a negative lens group and a positive lens group. When the object distance changes from infinity to a short distance, the negative lens group and the positive lens group in the rear lens group individually move along the optical axis direction with mutually different trajectories, and the negative lens group in the rear lens group moves towards the image surface side. During zooming from the wide angle end to the telephoto end, the first lens group moves toward the object side with respect to the image surface, and the first lens group, the second lens group, the middle lens group, and the rear lens group individually move such that the mutual gaps between adjacent lens groups change along the optical axis.
Inventors:
MARUYAMA MASAKI (JP)
Application Number:
PCT/JP2023/003793
Publication Date:
September 28, 2023
Filing Date:
February 06, 2023
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G02B15/20; G02B13/18
Foreign References:
| JP2020016808A | 2020-01-30 | |||
| JP2013224979A | 2013-10-31 | |||
| JP2013228500A | 2013-11-07 | |||
| JP2017134255A | 2017-08-03 |
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
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