Patent ID: 7652827
Filing Date: 2010-01-26
Classification: G02B

Abstract:
1. A zoom lens that includes a first lens group having negative refractive power and a second lens group having positive refractive power that are sequentially arranged from a subject side, and changes a focal length by changing a distance between the first lens group and the second lens group, wherein the second lens group includes, sequentially arranged from the subject side, a first lens that has positive refractive power and a convex surface facing toward the subject side, a second lens that has positive refractive power, an aspheric surface, and a convex surface facing toward the subject side, a third lens having negative refractive power, a fourth lens having positive refractive power, and a fifth lens including one lens or more having positive refractive power, the third lens and the fourth lens are connected, and the zoom lens satisfies following conditions,