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US 10,520,700 B2Granted
Lens driving unit, camera module and optical apparatus
AssigneeLG Innotek Co., Ltd.
InventorsJun Taek Lee, Sang Ok Park, Byung Wook Son, Seong Min Lee
Life of this patent
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Abstract
A lens driving device is provided, the lens driving device including: a housing; a bobbin disposed at an inner side of the housing; a first driving part disposed on the bobbin; a second driving part disposed on the housing and facing the first driving part; a first mounting part disposed on the bobbin; a second mounting part disposed on the bobbin and disposed at an opposite side of the first mounting part based on a center of the bobbin; a first magnet disposed on the first mounting part; a sensor part sensing a position of the first magnet; and a second magnet disposed on the second mounting part.
Claims21
A lens driving device, the lens driving device comprising:
- a housing, wherein the housing comprises first and second lateral walls opposite to each other and third and fourth lateral walls disposed between the first and second lateral walls and being opposite to each other;
- a bobbin disposed in the housing;
- a coil disposed on the bobbin;
- a first driving magnet facing the coil and disposed on the first lateral wall of the housing;
- a second driving magnet facing the coil and disposed on the third lateral wall of the housing,
- an elastic member coupled to the bobbin;
- a first magnet disposed on the bobbin;
- and
- a hall sensor facing the first magnet and disposed on the first lateral wall of the housing,
- wherein the first driving magnet comprises an inner surface facing the coil,
- wherein the second driving magnet comprises an inner surface facing the coil,
- wherein a horizontal width of the inner surface of the first driving magnet is shorter than a horizontal width of the inner surface of the second driving magnet,
- wherein the housing comprises a first corner part connecting the first lateral wall and the third lateral wall, a second corner part connecting the second lateral wall and the third lateral wall, a third corner part connecting the second lateral wall and the fourth lateral wall, and a fourth corner part connecting the first lateral wall and the fourth lateral wall,
- wherein the second driving magnet is disposed at a position nearer to the first corner part than to the second corner part, and
- wherein the first driving magnet is disposed at a position nearer to the first corner part than to the fourth corner part.
12 more elements
A lens driving device, the lens driving device comprising:
- a cover member comprising an upper plate and a plurality of lateral plates extending from the upper plate, wherein the plurality of lateral plates of the cover member comprises first and second lateral plates opposite to each other and third and fourth lateral plates disposed between the first and second lateral plates and being opposite to each other;
- a bobbin disposed in the cover member;
- a coil disposed on the bobbin;
- a first driving magnet facing the coil and the first lateral plate of the cover member and disposed between the coil and the first lateral plate of the cover member;
- a second driving magnet facing the coil and the second lateral plate of the cover member and disposed between the coil and the second lateral plate of the cover member;
- a third driving magnet facing the coil and the third lateral plate of the cover member and disposed between the coil and the third lateral plate of the cover member;
- a fourth driving magnet facing the coil and the fourth lateral plate of the cover member and disposed between the coil and the fourth lateral plate of the cover member;
- a base disposed below the bobbin and coupled with the lateral plate of the cover member;
- a circuit board disposed on the lateral plate of the cover member;
- a hall sensor disposed on the inner surface of the circuit board;
- a first magnet disposed on, and in direct physical contact with, the bobbin and disposed at a position corresponding to that of the hall sensor;
- and
- an elastic member coupled to the bobbin,
- wherein the first magnet is disposed between the coil and the bobbin in a first direction perpendicular to an optical axis,
- wherein the circuit board is disposed on the first lateral plate of the cover member,
- wherein the first driving magnet comprises an inner surface facing the coil,
- wherein the third driving magnet comprises an inner surface facing the coil,
- wherein a horizontal width of the inner surface of the first driving magnet is shorter than a horizontal width of the inner surface of the third driving magnet,
- wherein the first driving magnet and the second driving magnet are symmetric with respect to the optical axis,
- wherein the housing comprises a first corner part connecting the first lateral wall and the third lateral wall, a second corner part connecting the second lateral wall and the third lateral wall, a third corner part connecting the second lateral wall and the fourth lateral wall, and a fourth corner part connecting the first lateral wall and the fourth lateral wall,
- wherein the third driving magnet is disposed at a position nearer to the first corner part than to the second corner part,
- wherein the first driving magnet is disposed at a position nearer to the first corner part than to the fourth corner part,
- wherein the second driving magnet is disposed at a position nearer to the third corner part than to the second corner part, and
- wherein the fourth driving magnet is disposed at a position nearer to the third corner part than to the fourth corner part.
21 more elements
Dependencies are inferred from the claim text.