A camera module comprising: a fixed unit having a hole formed therein; a magnet disposed on an inner lateral side of the hole of the fixed unit; a movable unit including at least one lens, the movable unit configured to linearly move inside the hole of the fixed unit; an image sensor configured to sense an image incident through the at least one lens of the movable unit; a movable coil disposed on a surface of the movable unit; and a fixed coil disposed on a surface of the fixed unit, the fixed coil and the movable coil configured to induce a current or voltage from the movable coil to the fixed coil by electromagnetic induction between the fixed coil and the movable coil according to a distance from between the movable coil and the fixed coil, wherein the movable coil receives a drive current or voltage via a first wiring and a second wiring for moving the movable unit, the drive current or voltage having a low frequency signal and a high frequency signal, wherein the low frequency signal is a signal component for moving the movable unit and the high frequency signal is a signal component for determining the position of the movable unit, and wherein the fixed coil outputs the induced current or voltage via a third wiring and a fourth wiring based on the received induced current or voltage from the movable coil, wherein the fixed unit comprises a holder having the hole formed in a center region of the holder, the fixed coil is formed on a top side of the holder, and the fixed coil is located over the first to fourth wirings, wherein at least one of the first to fourth wirings comprises a spring configured to provide an elastic force according to a movement of the movable unit by being connected between the fixed unit and the movable unit, whereby a minimum gap between the fixed coil and the movable coil amounts to a thickness value of the spring to prevent degrading of linearity of the current or voltage induced to the fixed coil and inversion of a code sign of the current or voltage induced to the fixed coil, wherein the fixed coil comprises a board disposed on the top side of the fixed unit by having a hole formed in a center region of the board, wherein at least one coil pattern is formed on the board. a fixed unit having a hole formed therein; a magnet disposed on an inner lateral side of the hole of the fixed unit; a movable unit including at least one lens, the movable unit configured to linearly move inside the hole of the fixed unit; an image sensor configured to sense an image incident through the at least one lens of the movable unit; a movable coil disposed on a surface of the movable unit; and a fixed coil disposed on a surface of the fixed unit, the fixed coil and the movable coil configured to induce a current or voltage from the movable coil to the fixed coil by electromagnetic induction between the fixed coil and the movable coil according to a distance from between the movable coil and the fixed coil, wherein the movable coil receives a drive current or voltage via a first wiring and a second wiring for moving the movable unit, the drive current or voltage having a low frequency signal and a high frequency signal, wherein the low frequency signal is a signal component for moving the movable unit and the high frequency signal is a signal component for determining the position of the movable unit, and wherein the fixed coil outputs the induced current or voltage via a third wiring and a fourth wiring based on the received induced current or voltage from the movable coil, wherein the fixed unit comprises a holder having the hole formed in a center region of the holder, the fixed coil is formed on a top side of the holder, and the fixed coil is located over the first to fourth wirings,