ZOOM LENS AND IMAGING APPARATUS

摘要

A zoom lens essentially consists of positive first lens group, negative second lens group, negative third lens group, negative fourth lens group, and positive fifth lens group in this order from an object side. First and fifth lens groups are fixed with respect to an image plane, and second through fourth lens groups move in such a manner that a distance from each other changes when magnification is changed from a wide angle end to a telephoto end. First lens group essentially consists of 11th lens group having negative refractive power, 12th lens group having positive refractive power, and 13th lens group having positive refractive power in this order from the object side. 11th and 13th lens groups are fixed with respect to the image plane and 12th lens group moves during focusing. Further, the following conditional expression (1) is satisfied:;2.10

主权项

1. A zoom lens essentially consisting of:
a first lens group having positive refractive power; a second lens group having negative refractive power; a third lens group having negative refractive power; a fourth lens group having negative refractive power; and a fifth lens group having positive refractive power in this order from an object side, wherein the first lens group and the fifth lens group are fixed with respect to an image plane, and the second lens group, the third lens group and the fourth lens group move in such a manner that a distance from each other changes when magnification is changed from a wide angle end to a telephoto end, and wherein the first lens group essentially consists of an 11th lens group having negative refractive power, a 12th lens group having positive refractive power, and a 13th lens group having positive refractive power in this order from the object side, and wherein the 11th lens group and the 13th lens group are fixed with respect to the image plane and the 12th lens group moves during focusing, and wherein the following conditional expression (1) is satisfied:
2.10