Patent ID: 8896932
Filing Date: 2014-11-25
Classification: G02B

Abstract:
1. A zoom lens comprising, in order from the object side: a first lens group that has a positive refractive power; a second lens group that has a negative refractive power; and a third lens group that has a positive refractive power, wherein zooming is performed by changing spaces between the first to third lens groups during zooming from a wide-angle end to a telephoto end, wherein the third lens group includes, in order from the object side, a positive lens group, which has a positive refractive power, and a negative lens group, which is disposed to be close to the image side thereof and has a negative refractive power, with an air gap, which is widest in the third lens group, interposed therebetween, wherein the negative lens group includes a cemented lens which has a negative refractive power and which is formed of, in order from the object side, a positive lens and a negative lens, and a second positive lens, and wherein the following Conditional Expression (1) is satisfied where