Patent ID: 6025962
Filing Date: 2000-02-15
Classification: G02B

Abstract:
A zoom lens system with an anti-vibration function and comprising, in order from the object end:a first lens group having a positive refractive power;a second lens group having a negative refractive power;a third lens group having a positive refractive power;a fourth lens group having a negative refractive power; anda fifth lens group having a positive refractive power, and whose focal length at the wide-angle end is shorter than the diagonal length of the image plane of the zoom lens system;whereby at least one lens group selected from said first and fifth lens groups moves toward said object end and all of the distances between each of said lens groups are changed when zooming from the wide-angle end to the telephoto end, and at least one lens group selected from said second, third and fourth lens groups moves in a direction substantially perpendicular to the optical axis of the zoom lens system when preventing vibration.