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

摘要

A zoom lens including, in order from an object: a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having positive refractive power, wherein when f2 denotes a focal length of the second lens group, and
fw denotes a focal length of the zoom lens in the wide-angle end state, the following conditional expression being satisfied:
1.90<(−f2)/fw<3.00.

主权项

1. A zoom lens comprising, in order from an object:
a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having positive refractive power; and a fourth lens group having positive refractive power, the following conditional expression being satisfied:
1.90<(−f2)/fw<3.00 where f2 denotes a focal length of the second lens group, and fw denotes a focal length of the zoom lens in a wide-angle end state, and the following conditional expression being satisfied:
0.005<(−f2)/ft<0.048 where ft denotes a focal length of the zoom lens in a telephoto end state.