ZOOM LENS AND PHOTOGRAPHING APPARATUS USING THE SAME

摘要

PURPOSE: A zoom lens and a photographing apparatus including the same are provided to obtain high optical performance from a visible region to a near infrared region by forming at least one side of a lens into an aspherical surface. CONSTITUTION: A first lens group(L1) has negative refractive power on the whole. A second lens group(L2) has positive refractive power on the whole. The second lens group comprises four or more lenses. An aperture(SP) is arranged between the first lens group and the second lens group. Magnification is changed by changing distance between the first lens group and the second lens group. At least, one side of a lens of the second lens group which is nearest to object side is an aspherical surface.