Lens Driving Apparatus
AssigneeLG Innotek Co., Ltd.
InventorJi Hoon Kim
Life of this patent
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Abstract
Disclosed is a lens driving apparatus. The lens driving apparatus includes a base, a yoke coupled to the base, having an upper surface formed with a hole, a closed side surface, and an opened bottom surface, a bobbin movably installed in an inner portion of the yoke, a lens module coupled to the bobbin to go in and out the hole according to movement of the bobbin, a magnet fixed to an inner portion of the yoke, a coil fixed to an outer portion of the bobbin while facing the magnets, and springs coupled to the bobbin to provide restoration force to the bobbin.
Claims20
A lens driving apparatus comprising:
- a base comprising an opening and a recess provided at an inner lateral surface of the opening;
- a yoke disposed on the base, the yoke comprising an upper plate and a side plate;
- a bobbin disposed in the yoke, wherein the bobbin comprises a first support protrusion provided on an upper surface of the bobbin and a second support protrusion provided at a lower surface of the bobbin;
- magnets coupled to the yoke;
- a coil wound around an outer peripheral surface of the bobbin while facing the magnets;
- an upper spring disposed on the upper surface of the bobbin;
- and
- a lower spring disposed on the lower surface of the bobbin,
- wherein the second support protrusion of the bobbin is inserted into the recess of the opening of the base.
A lens driving apparatus comprising:
- a base;
- a yoke disposed on the base, the yoke comprising an upper plate and a side plate;
- a bobbin disposed in the yoke and configured to move in a first direction along an optical axis;
- magnets coupled to the yoke;
- a coil wound around an outer peripheral surface of the bobbin while facing the magnets;
- an upper spring coupled to an upper portion of the bobbin;
- and
- a lower spring coupled to a lower portion of the bobbin,
- wherein the upper spring is disposed between the upper plate of the yoke and the magnets,
- wherein the upper plate of the yoke comprises a first upper plate and a second upper plate disposed on the first upper plate,
- wherein the side plate of the yoke comprises a first side plate extended downwards from the first upper plate of the yoke and a second side plate connecting the first upper plate of the yoke and the second upper plate of the yoke,
- wherein the upper spring is disposed in the yoke,
- wherein the upper spring comprises an inner side coupled to the upper portion of the bobbin, an outer side overlapped with the first upper plate of the yoke in the first direction, and an intermediate portion connecting the inner side and the outer side, and
- wherein at least a portion of the intermediate portion is overlapped with the second upper plate of the yoke in the first direction.
A lens driving apparatus comprising:
- a base comprising an opening and a recess provided at an inner lateral surface of the opening;
- a yoke disposed on the base;
- a bobbin disposed in the yoke, wherein the bobbin comprises a support protrusion provided at a lower surface of the bobbin;
- magnets coupled to the yoke;
- a coil wound around an outer peripheral surface of the bobbin while facing the magnets;
- an upper spring disposed on an upper surface of the bobbin;
- and
- a lower spring disposed on the lower surface of the bobbin,
- wherein the upper spring comprise an inner side coupled to the bobbin, an outer side coupled to the yoke, and an intermediate portion connecting the inner side and the outer side,
- wherein the yoke comprises step section to provide a space for movement of the intermediate portion of the upper spring, and
- wherein the support protrusion of the bobbin is inserted into the recess of the opening of the base.
Dependencies are inferred from the claim text.