Zoom optical system, optical apparatus and method for manufacturing the zoom optical system

A zoom optical system, comprising:

• a first lens group having positive refractive power, a second lens group having negative refractive power and a third lens group having positive refractive power, disposed in order from an object and the first lens group being disposed closest to the object, wherein
• during zooming, a distance between the first lens group and the second lens group is varied, a distance between the second lens group and the third lend group is varied, and the first lens group is moved,
• the third lens group has a positive lens component which is disposed closest to the object in the third lens group,
• an image-side lens group is disposed next to an image side of the third lens group, and consists of a positive lens and a negative lens dispose in order from the object,
• an air distance is present between the positive lens and the negative lens,
• during zooming, a distance between the third lens group and the image-side lens group is varied,
• the image-side lens group is moved during focusing,
• the second lens group is movable with a movement component perpendicular to an optical axis, and
• the following conditional expression is satisfied:
• 0.40<fp/fGp<3.60
• where
• fp:
• a focal length of the positive lens component, and
• fGp:
• a focal length of the third lens group.

A zoom optical system, comprising:

• an aperture stop,
• a first lens group having positive refractive power, a second lens group having negative refractive power and a third lens group having positive refractive power, disposed in order from an object and the first lens group being disposed closest to the object, wherein
• during zooming, a distance between the first lens group and the second lens group is varied, a distance between the second lens group and the third lend group is varied, and the first lens group is moved,
• the aperture stop is disposed between the second lens group and the third lens group,
• the third lens group consists of an object-side subgroup having positive refractive power and an image-side subgroup having positive refractive power disposed in order from the object,
• the third lens group has a positive lens component which is disposed closest to the object in the third lens group,
• at least one surface of the positive lens component is aspherical,
• an air distance between the object-side subgroup and the image-side subgroup is a maximum air distance among all air distances between lenses in the third lens group, and
• the following conditional expressions are satisfied:
• 0.40<fp/fGp<3.60
• 0.06<fα/fβ<2.60
• where
• fp:
• a focal length of the positive lens component,
• fGp:
• a focal length of the third lens group,
• fα:
• a focal length of the object-side subgroup, and
• fβ:
• a focal length of the image-side subgroup.