| 摘要 |
A voice coil module is provided to control a lens correctly and prevent a malfunction by measuring a position of the lens. A voice coil module includes a lens(510), a movable tube(520), a tube fixing pin(570), a case(530), a first spring, a second spring, and a tube fixing pin driving coil(560). The voice coil module adjusts a position of the tube(520) having the lens(510) by using attraction and repulsion between a magnetic field which is generated by a current flowing on a permanent magnet and a coil. The movable tube(520) is attached to the lens(510) and is vertically moved from the lens(510). The tube fixing pin(570) fixes the tube(520) on left/right sides of the tube(520). The case(530) has the tube(520) on a central part. The first spring is attached to the case(530) on a lower end of the tube(520). The second spring is connected between the tube fixing pin(570) and an inner plane of the case(530). The tube fixing pin driving coil(560) is attached to an outer side of the case(530) and an extension line of the tube fixing pin(570).
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