Abstract: An actuator for optical image stabilization, includes a fixed frame having an internal space; a moving frame, accommodated in the internal space, configured to linearly and rotatably move on a plane perpendicular to an optical axis; a first ball member disposed between the fixed frame and the moving frame; a first driver, disposed on the moving frame and the fixed frame, configured to provide a driving force to the moving frame; a plurality of magnetic bodies disposed on the fixed frame to generate attractive force with respect to the first driver disposed on the moving frame; a sensor substrate having a portion coupled to the moving frame to be movable, together with the moving frame, and another portion coupled to the fixed frame; and an image sensor disposed on the portion of the sensor substrate.

Abstract: A camera module includes a housing, a movable body configured to move in a direction of an optical axis of the housing; a reinforcing member formed integrally on one surface of the movable body, and configured to increase a rigidity of the movable body; and a first buffer member formed in the reinforcing member, and configured to reduce an impactive force between the housing and the movable body.

Abstract: Disclosed herein is a method for centrifugal casting of a motor rotor. The method includes: assembling molds and a core; heating the assembled mold and core to a preset temperature; and forming a motor core by injecting molten metal into a forming space inside the mold and the core while rotating the assembled mold.