Patent ID: 9158092
Filing Date: 2015-10-13
Classification: G02B,H04N

Abstract:
1. A zoom lens system comprising a plurality of lens units, each lens unit having at least one lens element, wherein the plurality of lens units includes a lens unit located closest to an object side and a lens unit located closest to an image side, that are fixed with respect to an image surface in zooming from a wide-angle limit to a telephoto limit at a time of image taking, and at least three lens units among all of the plurality of lens units other than the lens unit located closest to the object side and the lens unit located closest to the image side are moving lens units that move along an optical axis in the zooming, at least one lens unit among the moving lens units is a focusing lens unit that moves along the optical axis in focusing from an infinity in-focus condition to a close-object in-focus condition, and the following conditions (1) and (3) are satisfied: where Σ(Tn) is the total of axial thicknesses of all the moving lens units, H is the maximum image height, T f