Patent ID: 9046640
Filing Date: 2015-06-02
Classification: G02B,G03B,H02K

Abstract:
1. A voice coil motor, comprising: a mover including a bobbin including a lower bobbin portion and an upper bobbin portion protruded from an upper surface of the lower bobbin portion in a direction parallel to an optical axis of a lens, and a coil disposed on a periphery of the bobbin; at least one magnet facing the coil; a yoke fixing the at least one magnet; and an elastic member supporting the bobbin, wherein the yoke comprises a rotation prevention unit configured to inhibit the bobbin from rotating, wherein the rotation prevention unit comprises: wherein the yoke further includes a groove portion immediately adjacent to a side surface of the downward portion of the rotation prevention unit and a side surface of the lateral portion of the rotation prevention unit, such that a boundary of the groove portion includes the side surface of the downward portion and the side surface of the lateral portion.