Lens driving actuator for auto-focus function and handshake compensation function

摘要

According to one embodiment of the present invention, a camera module includes: a movable element having first magnets which are formed at uniform intervals on the outer circumferential surface of a bobbin fixing a lens and second magnets which are arranged between the first magnets on the outer circumferential surface of the bobbin; a stator having first coil blocks which respectively face the first magnets, second magnets which respectively face the second magnets, and a housing which fixes the first coil blocks and the second magnets; an elastic member elastically supporting the movable element with respect to the stator; a base supporting the stator; and a case covering the housing and coupled to the base.

主权项

1. A lens driving actuator comprising:
a housing; a bobbin disposed inside the housing; a first coil disposed on the housing; a second coil disposed on the housing and spaced from the first coil; a first magnet disposed on the bobbin and facing the first coil; a second magnet disposed on the bobbin and facing the second coil; and an elastic member configured to elastically support the bobbin; wherein each of the first magnet and the second magnet is a flat magnet, wherein the bobbin comprises a lateral surface comprising a first plane surface disposed with the first magnet and a corner surface comprising a second plane surface disposed with the second magnet, wherein an obtuse angle is formed by a first imaginary plane extended from the first plane surface and a second imaginary plane extended from the second plane surface; wherein the first coil has a flat shape to be parallel with the first magnet, and the second coil has a flat shape to be parallel with the second magnet; and wherein a width of the first coil is larger than a width of the second coil.