The present invention relates to a linear micro motor having an forward
and backward reciprocating motion. The linear micro motor includes at
least two actuators which can be a scratch drive actuator (SDA), a bounce
drive actuator (BDA) or a combination thereof. To achieve the
reciprocating motion, the linear micro motor is arranged in a way that at
least two SDAs are disposed in an opposite manner, at least two BDAs are
disposed in an opposite manner, or at least a SDA and at least a BDA are
disposed in an identical manner. The linear micro motor of the present
invention in accordance with the arrangement of the actuators can be
realized to be applicable to a digital camera or camera phone by the
advancing and receding linear motion caused by the motion of the
actuators to achieve a focus-adjustable liquid crystal lens.