Lens driving device and camera module
AssigneeLG Innotek Co., Ltd.
InventorsKap Jin Lee, Jung Seok Oh
Life of this patent
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Abstract
A lens driving device includes a housing; a bobbin disposed in the housing; a magnet and a dummy member, arranged at the housing; a first coil disposed on the bobbin; and a substrate including a second coil facing the magnet. The housing includes a first and a second side part facing each other and a third and a fourth side part facing each other. The magnet includes a first magnet unit disposed at the first side part, a second magnet unit disposed at the third side part, and a third magnet unit disposed at the fourth side part. The dummy member is disposed at the second side part.
Claims20
A lens driving device comprising:
- a base;
- a housing disposed on the base;
- a bobbin disposed in the housing;
- a magnet and a first coil configured to move the housing with respect to the base;
- and
- an upper elastic member coupled with the housing and an upper surface of the bobbin,
- wherein the magnet comprises a first magnet unit, a second magnet unit, and a third magnet unit,
- wherein the first coil comprises a first coil unit disposed at a position corresponding to the first magnet unit, a second coil unit disposed at a position corresponding to the second magnet unit, and a third coil unit disposed at a position corresponding to the third magnet unit,
- wherein the housing is configured to move in an x-axis direction through an interaction between the first magnet unit and the first coil unit,
- wherein the housing is configured to move in a y-axis direction perpendicular to the x-axis direction through interactions between the second magnet unit and the second coil unit and between the third magnet unit and the third coil unit, and
- wherein an upper surface of the second magnet unit comprises a first area overlapped with the upper elastic member in an optical axis direction, a second area overlapped with the housing in the optical axis direction, and a third area not overlapped with both the upper elastic member and the housing in the optical axis direction.
A lens driving device comprising:
- a base;
- a housing disposed on the base;
- a bobbin disposed in the housing;
- a magnet and a first coil configured to move the housing with respect to the base;
- an upper elastic member coupled with the housing and an upper surface of the bobbin;
- and
- a wire configured to movably support the housing,
- wherein the magnet comprises a first magnet unit, a second magnet unit, and a third magnet unit,
- wherein the first coil comprises a first coil unit facing the first magnet unit, a second coil unit facing the second magnet unit, and a third coil unit facing the third magnet unit,
- wherein the housing is configured to move in a first direction through an interaction between the first magnet unit and the first coil unit,
- wherein the housing is configured to move in a second direction different from the first direction through interactions between the second magnet unit and the second coil unit and between the third magnet unit and the third coil unit, and
- wherein an upper surface of the second magnet unit comprises a first area overlapped with the upper elastic member in an optical axis direction, a second area overlapped with the housing in the optical axis direction, and a third area not overlapped with both the upper elastic member and the housing in the optical axis direction.
Dependencies are inferred from the claim text.