Invention Grant
- Patent Title: Zoom lens and image pickup apparatus having the same
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Application No.: US17740421Application Date: 2022-05-10
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Publication No.: US11644654B2Publication Date: 2023-05-09
- Inventor: Kohei Kimura
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP 2019177968 2019.09.27
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B13/00 ; H04N23/698

Abstract:
A zoom lens consisting of, in order from an object side to an image side, a first lens unit having a negative refractive power, and a rear lens unit having one or more lens units and having a positive refractive power as a whole. Intervals between adjacent lens units change during zooming. The first lens unit has at least three meniscus lenses each having a negative refractive power and a convex shape toward the object side. At least one of the at least three meniscus lenses includes an aspherical surface having a positive aspherical amount. A predetermined condition is satisfied.
Public/Granted literature
- US20220269054A1 ZOOM LENS AND IMAGE PICKUP APPARATUS HAVING THE SAME Public/Granted day:2022-08-25
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