Lens driving apparatus, and camera module and optical device comprising same
AssigneeLG Innotek Co., Ltd.
InventorsSANG OK PARK, BYUNG WOOK SON, SEONG MIN LEE, JUN TAEK LEE, KAP JIN LEE
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Abstract
An embodiment comprises: a housing; a bobbin for mounting a lens, the bobbin being accommodated inside the housing; a first coil disposed on an outer circumferential surface of the bobbin; a magnet disposed in the housing; and a second coil disposed in the housing, wherein the second coil comprises a third coil and a fourth coil, a first signal is applied to the first coil, a second signal is applied to the fourth coil, and an induction voltage is generated in the second coil by a mutual induction operation between the first coil and the second coil.
Claims20
A lens moving apparatus comprising:
- a housing;
- a bobbin disposed in the housing;
- a first coil disposed on the bobbin;
- a magnet disposed on the housing;
- an second coil disposed on the housing and comprising a first induction coil and a second induction coil;
- and
- a circuit board disposed under the first coil and electrically connected to the second coil,
- wherein the first coil is configured to receive a first signal through the circuit board,
- wherein the second coil is configured to receive a second signal through the circuit board,
- wherein the circuit board is configured to receive a first voltage from the first induction coil and a second voltage from the second induction coil.
Dependencies are inferred from the claim text.