Patent ID: 7894135
Filing Date: 2011-02-22
Classification: G02B

Abstract:
1. A zoom lens comprising: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; a fourth lens unit having a negative refractive power; and a fifth lens unit having a positive refractive power, wherein the first to fifth lens units are arranged in order from an object side toward an image side, wherein zooming is performed by moving some of the five lens units so that a distance between the first lens unit and the second lens unit is longer, a distance between the second lens unit and the third lens unit is shorter, and a distance between the fourth lens unit and the fifth lens unit is longer at a telephoto end than at a wide angle end, wherein the fourth lens unit is formed by one lens component, and is moved for image shifting in a direction having a component that is perpendicular to an optical axis of the zoom lens, wherein the lens component includes a negative lens, and the following conditional expressions are satisfied: where ν wherein the following conditional expression is satisfied: where R