ZOOM LENS AND IMAGING APPARATUS WITH THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a zoom lens that is advantageous in achieving a high zoom ratio and a wide angle of field to meet the user's demand for a wider variety of photographing area than before, and that is suitable for use with an electronic image sensor such as a CCD or CMOS sensor, because good image quality of picked-up images can be achieved without difficulty, and to provide an imaging apparatus with the same. SOLUTION: The zoom lens includes, in order from an object side thereof, a first lens unit G1 having a positive refracting power, a second lens unit G2 having a negative refracting power, and a third lens unit G3 having a positive refracting power, wherein zooming is performed by changing distances between the lens units, the second lens unit has two negative lens elements and one positive lens element, and the lens element located closest to the object side is a negative lens element. The zoom lens satisfies the following conditional expressions (1) and (2): (1) 0.60<Σd2G/Imw<1.95, (2) 1.8302ave<2.000, where the term "lens element" refers to an optical member that satisfies 0.1mw. COPYRIGHT: (C)2009,JPO&INPIT