Patent ID: 8537249
Filing Date: 2013-09-17
Classification: G02B,H04N

Abstract:
1. A zoom lens system of lens units each constituted by at least one lens element and arranged along the lens system's optical axis to define an object side of the lens system on one end thereof, and an image side on an opposite end of the lens system from the object-side end thereof, the zoom lens system comprising, in object-side-to-image-side order: a first lens unit, the first lens unit having positive optical power; a second lens unit; an aperture diaphragm; one or more additional lens units, a first of said one or more additional lens units being a first focusing-lens unit, the first focusing-lens unit having negative optical power and moving along the optical axis in the zoom lens system focusing from an infinity in-focus condition to a close-object in-focus condition; an image blur compensating lens unit provided adjacent the first focusing-lens unit, the image blur compensating lens unit movable in a direction perpendicular to the optical axis in order to optically compensate image blur; wherein the following condition (6) is satisfied: where T T H is the height of an image the zoom lens system forms on an image surface on the image-side end of the zoom lens system.