ZOOM LENS AND IMAGING APPARATUS

摘要

A zoom lens is constituted by, in order from the object side: a negative first lens group; an aperture stop; a positive second lens group; a negative third lens group; and a positive fourth lens group. All of the lens groups move along the optical axis when changing magnification from the wide angle end to the telephoto end such that the distance between the first lens group and the second lens group decreases and the distance between the second lens group and the third lens group increases. The first lens group is constituted by, in order from the object side, a 1-1 lens having a negative refractive power, a 1-2 lens having a negative refractive power, and a 1-3 lens having a positive refractive power. Conditional Formula (1) below is satisfied.;1.75

主权项

1. A zoom lens consisting of, in order from the object side to the image side:
a first lens group having a negative refractive power; a stop; a second lens group having a positive refractive power; a third lens group having a negative refractive power; and a fourth lens group having a positive refractive power; all of the lens groups moving along the optical axis when changing magnification from the wide angle end to the telephoto end such that the distance between the first lens group and the second lens group decreases and the distance between the second lens group and the third lens group increases; the first lens group consisting of, in order from the object side to the image side, a 1-1 lens having a negative refractive power, a 1-2 lens having a negative refractive power, and a 1-3 lens having a positive refractive power; the second lens group consisting of, in order from the object side to the image side, a 2-1 lens having a positive refractive power, a 2-2 lens having a positive refractive power, a 2-3 lens having a negative refractive power, and a 2-4 lens having a positive refractive power; and the conditional formula below being satisfied:
1.75