Zoom lens and imaging device

A zoom lens having a plurality of lens groups, the zoom lens comprising, in order from an object side:

• a first lens group having positive refractive power;
• a second lens group having negative refractive power;
• and
• a rear group being a set of lens groups and having positive refractive power as a whole, wherein
• the rear group includes, in order from an object side, an intermediate lens group M1 having positive refractive power, and an intermediate lens group M2 having positive refractive power,
• an interval between adjacent lens groups is changed during zooming from a wide angle end to a telephoto end,
• the intermediate lens group M1 includes, in order from the object side, an A group being a set of lenses and having positive refractive power, a B group being a set of lenses and having negative refractive power, and a C group being a set of lenses and having positive refractive power, and
• the zoom lens further satisfies either a condition A or a condition B below,
• the condition A is that
• at least one lens included in either the intermediate lens group M1 or the intermediate lens group M2 is an anti-vibration lens that moves in a direction intersecting an optical axis of the zoom lens, and
• when a lens group closest to an image surface side in the rear group is defined as a lens group L, following expressions (1) and (2) are satisfied,
• -
• 1
• ⁢
• 0
• ⁢
• 0
• ⁢
• 0
• <
• β
• ⁢
• m
• ⁢
• 1
• ⁢
• w
• <
• 0
• .00
• (
• 1
• )
• -
• 5.
• ⁢
• 0
• <
• mL
• /
• fw
• <
• -
• 0
• .
• 0
• ⁢
• 1
• (
• 2
• )
• here,
• βm1w is a lateral magnification of the intermediate lens group M1 during infinity focus at a wide angle end,
• mL is a movement distance of the lens group L during zooming from a wide angle end to a telephoto end when a movement distance from an object side to an image surface side is considered positive, and
• fw is a focal length of the zoom lens at a wide angle end;
• the condition B is that
• at least one lens included in the intermediate lens group M1 and in a lens group closer to an image surface side than the intermediate lens group M1 is an anti-vibration lens that moves in a direction intersecting an optical axis of the zoom lens, and
• following expressions (3) and (4) are satisfied,
• 0.2
• <
• Lt
• /
• ft
• <
• 1.3
• (
• 3
• )
• 0.1
• <
• fC
• /
• fM
• ⁢
• 1
• <
• 9.5
• (
• 4
• )
• here,
• Lt is a total length of the zoom lens at a telephoto end,
• ft is a focal length of the zoom lens at a telephoto end,
• fC is a focal length of the C group, and
• fM1 is a focal length of the intermediate lens group M1.