Title:
ズームレンズおよびそれを有する撮像装置
Document Type and Number:
Japanese Patent JP6576381
Kind Code:
B2
Abstract:
A zoom lens includes a first lens unit L1 having positive refractive power, a second lens unit L2 having negative refractive power, and a rear lens group LB including a plurality of lens units and having positive refractive power. The rear lens group LB includes a lens unit LF configured to move during focusing and having negative refractive power, a lens unit LN disposed on the image side of the lens unit LF and having negative refractive power, and a lens unit LP disposed on the image side of the lens unit LN and having the largest positive refractive power among the lens units having positive refractive power. The lens units LP and LN move to the object side in a predetermined locus during zooming from the wide-angle end to the telephoto end, and the lens units LP and LF satisfy a predetermined conditional expression.
Inventors:
Takahiro Hatada
Application Number:
JP2017040989A
Publication Date:
September 18, 2019
Filing Date:
March 03, 2017
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B15/20
Domestic Patent References:
| JP2015018124A | ||||
| JP2013257507A | ||||
| JP2009251118A | ||||
| JP2012047814A | ||||
| JP2018036364A | ||||
| JP2018022058A |
Foreign References:
| WO2014129187A1 | ||||
| WO2014129170A1 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa