Zoom lens and imaging apparatus

摘要

A zoom lens includes, in order from an object side to an image side: a first lens group that has a positive refractive power; a second lens group that has a negative refractive power; a third lens group that has a positive refractive power; and a fourth lens group that has a positive refractive power. During zooming from a wide-angle end to a telephoto end, the first lens group is stationary relative to an imaging surface, and the second lens group is moved to the image side in an optical axis direction so as to decrease a space between the second lens group and the third lens group. The third lens group includes a positive lens, a negative lens, and a cemented lens. The zoom lens satisfies −0.95

主权项

1. A zoom lens comprising, in order from an object side to an image side:
a first lens group that has a positive refractive power; a second lens group that has a negative refractive power; a third lens group that has a positive refractive power; and a fourth lens group that has a positive refractive power, wherein during zooming from a wide-angle end to a telephoto end, the first lens group is stationary relative to an imaging surface, and the second lens group is moved to the image side in an optical axis direction so as to decrease a space between the second lens group and the third lens group, wherein the third lens group includes, in order from the object side to the image side, a positive lens, a negative lens, and a cemented lens which has a positive refractive power and is formed of a positive lens positioned on the object side and a negative lens positioned on the image side, and wherein the following Conditional Expression (1) is satisfied:
−0.95