Patent ID: 7760453
Filing Date: 2010-07-20
Classification: G02B,H02K

Abstract:
1. A lens displacement device, comprising: a first hollow magnet; a hollow magnetic conducting plate, which has a first magnetic pole side and a second magnetic pole side, in which the first magnetic pole side is magnetically connected to the first hollow magnet; a second hollow magnet, which is magnetically connected to the second magnetic pole side of the hollow magnetic conducting plate, wherein the first hollow magnet, the hollow magnetic conducting plate and the second hollow magnet are combined to form a magnetically connected assembly; a hollow coil, which is placed at the outer or inner perimeter of the magnetically connected assembly, and the hollow coil surrounds the magnetically connected assembly and they have a gap in-between them to allow for sliding; a lens slide base, which rigidly connects the first hollow magnet of the magnetically connected assembly or the hollow coil; wherein the lens slide base, the first hollow magnet, the hollow magnetic conducting plate and the second hollow magnet form a movable part, or the lens slide base and the hollow coil form a movable part; a base, used to fix the hollow coil, forming a non-movable part, or is used to fix the first hollow magnet, the hollow magnetic conducting plate and the second hollow magnet, forming a non-movable part; and a lens positioning mechanism, comprising a control circuit and a pressure generating component, for controlling the movement of the movable part.