Patent ID: 7787191

Claim:
A zoom lens, comprising: a first lens group, having a negative refractive power, and composed of a first lens, a second lens, and a third lens arranged in order from an object side to an image side, wherein refractive powers of the first lens, the second lens, and the third lens are respectively negative, negative, and positive; and a second lens group, disposed between the first lens group and the image side, having a positive refractive power, and composed of a fourth lens, a fifth lens, and a sixth lens arranged in order from the object side to the image side, wherein refractive powers of the fourth lens, the fifth lens, and the sixth lens are respectively positive, negative, and positive, wherein the fourth lens is an aspheric lens, and wherein the fourth lens and the sixth lens are biconvex lenses, an Abbe number of the fifth lens is greater than 22, and an Abbe number of at least one of the fourth lens and the sixth lens is greater than 80; wherein the first lens group and the second lens group are capable of moving between the object side and the image side.