Zoom lens and image pickup apparatus having the same

摘要

A zoom lens includes, a lens unit Lp having the highest positive refractive power, a lens unit Ln having negative refractive power, and a lens unit Lp2 having positive refractive power. In a first region, focusing from an infinite distance to a predetermined finite distance and zooming are able to be performed. In a second region in which macro driving is performed from a telephoto end to a macro end, two or more lens units are moved during macro driving so that the lens unit Lp is located closer to the object side than at a wide-angle end, a distance between the lens unit Lp and the lens unit Ln is larger at the macro end than at the wide-angle end, and a distance between the lens unit Ln and the lens unit Lp2 is smaller at the macro end than at the wide-angle end.

主权项

1. A zoom lens comprising, in order from an object side to an image side:
a lens unit Lp having the highest positive refractive power among all lens units included in the zoom lens, a lens unit Ln having negative refractive power, and a lens unit Lp2 having positive refractive power, wherein a distance between every adjacent lens units varying during zooming, wherein in a first region in which focusing from an infinite distance to a predetermined finite distance and zooming are able to be performed, two or more lens units are moved during zooming, and at least one lens unit is moved during focusing, and wherein in a second region in which macro driving is performed from a telephoto end to a macro end at which focusing is able to be performed on an object distance shorter than the predetermined finite distance, two or more lens units are moved during macro driving so that the lens unit Lp is located closer to the object side than at a wide-angle end, a distance between the lens unit Lp and the lens unit Ln is larger at the macro end than at the wide-angle end, and a distance between the lens unit Ln and the lens unit Lp2 is smaller at the macro end than at the wide-angle end.