VOICE COIL MOTOR

摘要

A VCM is disclosed, the motor including a stator including a first driving unit, a rotor arranged inside the stator, including a second driving unit responding to the first driving unit and mounted therein with a lens, a base fixing the stator, and an elastic member coupled to the rotor to float the rotor from the base in a case a driving signal for driving the first and second driving units is not applied to the first and second driving units.

主权项

1. A lens driving device comprising:
a base; a bobbin disposed over the base; a coil block disposed outside of the bobbin; a magnet facing the coil block; an elastic member coupled to the bobbin and configured to distance the bobbin from the base at an initial position when no current is applied to the coil block, wherein the bobbin is configured to travel from the initial position in a first direction approaching the base when a forward current is applied to the coil block and to travel from the initial position in a second direction distancing from the base when a backward current is applied to the coil block, and wherein the lens driving device is configured such that a first stroke length of the bobbin in the first direction is different from a second stroke length of the bobbin in the second direction.