Patent ID: 7800836

Claim:
A zoom lens comprising, sequentially from an object side: a first lens group that is negative; and a second lens group that is positive, wherein focal length is varied by varying a distance between the first lens group and the second lens group, the first lens group includes, from the object side, a first lens that is a negative biconcave lens having at least one aspherical surface, and a second lens that is a positive meniscus lens having a convex surface facing toward the object side and at least one aspherical surface, and a first condition 0.8<|f 1 /f 2 |<1.0 and a second condition 0.5<|r 2 /f 1 |<0.8 are satisfied, f 1 being a focal length of the first lens group, f 2 being a focal length of the second lens group, r 2 being radius of curvature of a surface of the first lens in the first lens group, the surface facing toward an image.