A lens moving apparatus comprising: a housing; a bobbin disposed in the housing; a first coil disposed on an outer circumferential surface of the bobbin; a magnet disposed on a side portion of the housing, the magnet being disposed corresponding to the first coil; a base disposed under the housing; a second coil disposed on an outer side surface of the base, the second coil being configured to generate an inductive voltage due to interaction with the first coil; and first to fourth elastic members(160-1 - 160-4) coupled to the bobbin and the housing, the first to fourth elastic members(160-1 - 160-4) being disposed so as to be spaced apart from each other on an upper surface of the base, wherein the outer side surface of the base comprises a plurality of outer side surfaces, and the second coil is disposed on the outer side surface of the base in a groove between an upper end of the base and a lower end of the base, wherein the first elastic member comprises a first bonding portion and a first connection terminal, and the second elastic member comprises a second bonding portion and a second connection terminal, and the third elastic member comprises a third bonding portion and a third connection terminal, and the fourth elastic member comprises a fourth bonding portion and a fourth connection terminal, wherein the first coil is coupled to the first and second bonding portions(15a,15b) and the second coil is coupled to the third and fourth bonding portions(16a,16b), wherein a driving signal for driving the first coil is supplied to the first and second connection terminals and wherein the inductive voltage of the second coil is output to an outside via the third and fourth connection terminals(164-3, 164-4), wherein the third bonding portion and the third connection terminal are disposed on different outer side surfaces of the base, and the fourth bonding portion and the fourth connection terminal are disposed on different outer side surfaces of the base. a housing; a bobbin disposed in the housing; a first coil disposed on an outer circumferential surface of the bobbin; a magnet disposed on a side portion of the housing, the magnet being disposed corresponding to the first coil; a base disposed under the housing; a second coil disposed on an outer side surface of the base, the second coil being configured to generate an inductive voltage due to interaction with the first coil; and first to fourth elastic members(160-1 - 160-4) coupled to the bobbin and the housing, the first to fourth elastic members(160-1 - 160-4) being disposed so as to be spaced apart from each other on an upper surface of the base, wherein the outer side surface of the base comprises a plurality of outer side surfaces, and the second coil is disposed on the outer side surface of the base in a groove between an upper end of the base and a lower end of the base, wherein the first elastic member comprises a first bonding portion and a first connection terminal, and the second elastic member comprises a second bonding portion and a second connection terminal, and the third elastic member comprises a third bonding portion and a third connection terminal, and the fourth elastic member comprises a fourth bonding portion and a fourth connection terminal, wherein the first coil is coupled to the first and second bonding portions(15a,15b) and the second coil is coupled to the third and fourth bonding portions(16a,16b), wherein a driving signal for driving the first coil is supplied to the first and second connection terminals and wherein the inductive voltage of the second coil is output to an outside via the third and fourth connection terminals(164-3, 164-4), wherein the third bonding portion and the third connection terminal are disposed on different outer side surfaces of the base, and the fourth bonding portion and the fourth connection terminal are disposed on different outer side surfaces of the base.