Patent ID: 9541747
Date: 2017-01-10
CPC Classifications: G02B

Claim:
1. A zoom lens, comprising: a first lens group, having a negative refractive power and comprising a first lens, a second lens and a third lens arranged from an object side to an image side, wherein an Abbe Number of at least one of the first lens, the second lens and the third lens is greater than 70, and the first lens has a concave surface facing the object side, wherein the first lens is a lens with a refractive power closest to the object side of all lenses within the zoom lens; and a second lens group, having a positive refractive power, disposed between the first lens group and the image side and comprising a fourth lens, a fifth lens, a sixth lens, a seventh lens and a eighth lens arranged from the object side to the image side, wherein the zoom lens satisfies −2.4<f1/f