Patent ID: 8520318
Filing Date: 2013-08-27
Classification: G02B

Abstract:
1. A zoom lens comprising: a first lens group having positive refractive power; a second lens group having negative refractive power; and a third lens group having positive refractive power, wherein the first, second, and third lens groups are arranged in that order from an object side to an image side, wherein when zooming from a wide-angle end state to a telephoto end state, the first lens group moves to the object side, and spacings between the first, second, and third lens groups change, wherein the third lens group has at least two lenses including a first lens that is a positive lens arranged closer to the object side than all other lenses of the third lens group, wherein the zoom lens is configured to perform blur correction when blur occurs on an image plane by moving the first lens of the third lens group in a direction perpendicular to an optical axis, and wherein the lenses of the third lens group are configured such that the following conditional expression (1) is satisfied, where: