Zoom lens, imaging device, and camera having imaging device

An imaging device capable of converting and outputting an optical image of a subject as an electrical image signal, the imaging device comprising:

• a zoom lens for forming the optical image of the subject so as to be zoomable;
• and
• an imaging element for converting the optical image of the subject formed by the zoom lens into the electrical signal,
• the zoom lens including, in order from an object side, a first lens unit of positive optical power, a second lens unit of negative optical power, a third lens unit of positive optical power, and a fourth lens unit of positive optical power, wherein
• when zooming from a wide-angle end to a telephoto end, the first lens unit and the second lens unit move so as to trace a convex path toward an image side, and the third lens unit and the fourth lens unit move monotonously toward the object side, and wherein,
• the third lens unit is moved in a direction perpendicular to an optical axis to allow compensation for a movement of an image caused by a vibration of the zoom lens.

A camera capable of capturing an image of a subject and outputting the image as an electrical signal, the camera comprising

• an imaging device including a zoom lens for forming an optical image of the subject so as to be zoomable, and an imaging element for converting the optical image of the subject formed by the zoom lens into the electrical signal,
• the zoom lens including, in order from an object side, a first lens unit of positive optical power, a second lens unit of negative optical power, a third lens unit of positive optical power, and a fourth lens unit of positive optical power, wherein
• when zooming from a wide-angle end to a telephoto end, the first lens unit and the second lens unit move so as to trace a convex path toward an image side, and the third lens unit and the fourth lens unit move monotonously toward an object side, and Wherein,
• the third lens unit is moved in a direction perpendicular to an optical axis to allow compensation for a movement of an image caused by a vibration of the zoom lens.