Patent ID: 7623297

Claim:
A zoom lens comprising, in order from an object side: a first lens group that is fixed upon zooming and wholly has a negative refractive power; a second lens group that comprises an optical path bending prism, the second lens group which is fixed upon zooming; a third lens group that is allowed to move upon zooming and wholly has a positive refractive power; a fourth lens group that is allowed to move upon zooming and wholly has a negative refractive power; and a fifth lens group that is fixed upon zooming and wholly has a positive refractive power, wherein the following Conditional Expressions (1) to (2) are satisfied: −1.5< f 3/ f 4<−0.5 (1) 2.0< DA/f w <3.0 (2) where f 3 denotes focal length of the third lens group, f 4 denotes focal length of the fourth lens group, f w denotes focal length of a system overall at a wide end, and DA denotes optical path length from an image-side surface of the first lens group to an object-side surface of the third lens group, at a telephoto end.