Invention Grant
- Patent Title: Zoom lens and image pickup apparatus including the same
-
Application No.: US14948508Application Date: 2015-11-23
-
Publication No.: US09964743B2Publication Date: 2018-05-08
- Inventor: Yosuke Eguchi
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Carter, DeLuca, Farrell & Schmidt, LLP
- Priority: JP2014-240828 20141128; JP2014-240829 20141128
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B13/02 ; G02B15/16 ; G02B15/173 ; G02B27/00

Abstract:
Provided is a zoom lens, including, in order from an object side to an image side: a positive first lens unit; a negative second lens unit; a positive third lens unit; and a rear lens group including at least one lens unit, in which the first lens unit is not configured to move for zooming, and the second lens unit, the third lens unit, and at least one lens unit included in the rear lens group are configured to move during zooming so that intervals between adjacent lens units are changed during zooming. A lateral magnification of the second lens unit at a wide angle end, a lateral magnification of the second lens unit at a telephoto end, a movement amount of the third lens unit during zooming from the wide angle end to the telephoto end, and a total length of the zoom lens are appropriately set.
Public/Granted literature
- US20160154219A1 ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME Public/Granted day:2016-06-02
Information query