Patent ID: 6995924

Claim:
A zoom lens comprising, arranged along an optical axis in order from the object side as follows: a first lens group; a second lens group; wherein at least two lens groups of the zoom lens move to perform zooming; the first lens group consists of a first lens component having negative refractive power and a meniscus shape that includes a first lens element having negative refractive power and a meniscus shape and a second lens component having positive refractive power and a meniscus shape that includes a second lens element having positive refractive power and a meniscus shape; and the following conditions are satisfied: tan S >0.72 18.0<ν d2 <22.0 Δν d >(tan S −0.7)·32.0+18.0 where S is the half-field angle at the wide-angle end, ν d2 is the Abbe number of said second lens element, and Δν d is the difference of the Abbe numbers at the d-line (587.6 nm) of said first lens element and said second lens element.