OIS (optical image stabilizer) actuator and camera module having the same OIS actuator

摘要

The present invention relates to an OIS (Optical Image Stabilizer) actuator and a camera module having the OIS actuator, the OIS actuator including: a horizontal driving unit; a vertical driving unit; and a support unit positioned at a periphery of the vertical driving unit and formed with a fourth electrode, wherein any one of the horizontal driving unit and the vertical driving unit is driven to compensate a warping of an optical path of an OIS lens unit.

主权项

1. An OIS (Optical Image Stabilizer) actuator comprising: a horizontal driving unit connected by wrapping an edge of an OIS lens unit positioned on an optical path, having a first combteeth-shaped first electrode at one side and a first elastic unit at the other side, and driven to a horizontal direction perpendicular to an optical axis of the OIS lens unit based on electrostatic force acting on the first electrode and elasticity force acting on the first elastic unit; a vertical driving unit positioned at a periphery of the horizontal driving unit, having a second electrode discretely meshed with the first combteeth-shaped first electrode, a second combteeth-shaped third electrode at one side perpendicular to the optical axis and the horizontal direction and a second elastic unit on the other side, and driven to a horizontal direction based on electrostatic force acting on the third electrode and elasticity force acting on the second elastic unit; and a support unit positioned at a periphery of the vertical driving unit and having a fourth electrode discretely meshed with the second combteeth-shaped third electrode, wherein a warpage of an optical path of the OIS lens unit is compensated by driving of at least any one of the horizontal driving unit and the vertical driving unit.