ZOOM LENS AND IMAGE CAPTURING DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a zoom lens which has a high magnification and is sufficiently corrected for aberrations even in the near-infrared range.SOLUTION: A zoom lens 1 comprises a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having negative refractive power, and a fourth lens group G4 having positive refractive power arranged in order from the object side to the image plane I side. The fourth lens group G4 has a resin lens having negative refractive power and one or more positive lenses, of which at least one positive lens has a refractive index n, Abbe number &ngr;, and partial dispersion ratio Pthat satisfy the following conditional expressions: 1.40