Patent ID: 9188769
Filing Date: 2015-11-17
Classification: G02B

Abstract:
1. A zoom lens comprising: a first lens group which has a positive refractive power; a second lens group which has a negative refractive power; a third lens group which comprises a shutter and has a positive refractive power; a fourth lens group which has a positive refractive power; a fifth lens group which has a negative refractive power; and a sixth lens group which has a positive refractive power, wherein the first, second, third, fourth, fifth, and sixth lens groups are arranged from an object side toward an image side, and when the zoom lens zooms from a wide angle position to a telephoto position, the third lens group is fixed, and the first, second, fourth, fifth, and sixth lens groups are moved, and wherein the first lens group comprises a first positive lens, a second positive lens, and a third positive lens having a meniscus shape whose object side surface is convex.