Title:
ズームレンズ及びそれを有する撮像装置
Document Type and Number:
Japanese Patent JP7146436
Kind Code:
B2
Abstract:
Provided is a zoom lens including, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a rear lens group including a plurality of lens units. The zoom lens has a configuration in which an interval between each pair of adjacent lens units is changed for zooming. The first lens unit is configured to move for zooming. The rear lens group includes at least one lens unit having a negative refractive power. Further, a focal length of the first lens unit, a focal length of the second lens unit, a focal length of the zoom lens at the wide angle end, a total length of the zoom lens at the wide angle end, and a back focus at the wide angle end are each appropriately set.
Inventors:
Shohei Kikuchi
Application Number:
JP2018082015A
Publication Date:
October 04, 2022
Filing Date:
April 23, 2018
Export Citation:
Assignee:
Canon Inc
International Classes:
G02B15/20; G02B13/18
Domestic Patent References:
| JP2019174711A | ||||
| JP2017003646A | ||||
| JP2016090748A | ||||
| JP2014021232A |
Foreign References:
| WO2017099244A1 | ||||
| WO2016203819A1 | ||||
| WO2016121926A1 | ||||
| WO2016051672A1 | ||||
| US20120057246 |
Attorney, Agent or Firm:
Takuma Abe
Sougo Kuroiwa
Sougo Kuroiwa