Patent ID: 7869150
Filing Date: 2011-01-11
Classification: G02B,H04N

Abstract:
1. An actuator used for a camera module and controlling a lens assembly to move along an optical axis, the actuator comprising: a magnet disposed on a side of the lens assembly; a coil part disposed within a magnetic field of the magnet and controlling an up-and-down movement of the lens assembly when an electric power is applied; and a yoke part disposed to horizontally move the magnet disposed on the side of the lens assembly, wherein the lens assembly is provided with a friction-generating member generating a frictional force to the lens assembly in an opposite direction to a direction in which the lens assembly moves to the yoke part, the lens assembly comprises a friction-generating member receiver part therein, and the friction-generating-member receiver part receives the friction-generating member, and the friction-generating member has a shaft shape and is in contact with a surface of the friction-generating-member receiver part to provide the frictional force.