A driving mechanism comprises: (i) an actuator comprising: an
electro-mechanical conversion element; a driving member which is
connected to one end of the electro-mechanical conversion element and
moves in accordance with elongation or contraction of the
electro-mechanical conversion element; and a weight member provided on
the other end of the electro-mechanical conversion element; and (ii) a
driven member frictionally engaged with the driving member, wherein the
actuator allows the driven member to move along the driving member, and
the weight member comprises a member which reduces a resonance frequency
of the actuator.