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US 12,761,442 B2Granted
Lens driving apparatus, and camera module and optical device comprising same
AssigneeLG Innotek Co., Ltd.
InventorSang Ok Park
Life of this patent
Estimating the term…
Abstract
An embodiment comprises: a base; a housing disposed on the base; a bobbin disposed inside the housing; a first magnet disposed on the bobbin; a coil facing the first magnet and disposed on the housing; a second magnet spaced apart from the first magnet and disposed on the bobbin; a yoke disposed on the housing, facing the second magnet; a ball member disposed between the bobbin and the housing; and a position sensor facing the first magnet or the second magnet in an optical axis direction, and disposed on the base.
Claims20
An autofocus apparatus comprising:
- a housing
- a bobbin movably disposed with respect to the housing;
- a first magnet disposed on a first side portion of the bobbin;
- a coil disposed on the housing, the coil facing the first magnet and interacting with the first magnet to move the bobbin along an optical axis;
- a second magnet disposed on a second side portion of the bobbin different from the first side portion of the bobbin, the second magnet being spaced apart from the first magnet;
- a yoke disposed on a side portion of the housing corresponding to the second side portion of the bobbin, the yoke and the second magnet being located to directly face each other with no coil therebetween;
- and
- a ball member disposed between the second side portion of the bobbin and the side portion of the housing, the ball member maintaining a distance between the second side portion of the bobbin and the side portion of the housing in a first direction perpendicular to the optical axis under a preload provided by magnetic attraction between the second magnet and the yoke.
5 more elements
A camera device comprising:
- a housing;
- a bobbin movably disposed with respect to the housing;
- a first magnet disposed on a first side portion of the bobbin;
- a coil disposed on the housing, the coil facing the first magnet and interacting with the first magnet to move the bobbin along an optical axis;
- a second magnet disposed on a second side portion of the bobbin different from the first side portion of the bobbin, the second magnet being spaced apart from the first magnet;
- a yoke disposed on a side portion of the housing corresponding to the second side portion of the bobbin, the yoke and the second magnet being located to directly face each other with no coil therebetween;
- and
- a ball member disposed between the second side portion of the bobbin and the side portion of the housing, the ball member maintaining a distance between the second side portion of the bobbin and the side portion of the housing in a first direction perpendicular to the optical axis under a preload provided by magnetic attraction between the second magnet and the yoke;
- a first circuit board disposed below the housing;
- an image sensor disposed on the first circuit board;
- and
- a position sensor disposed on the first circuit board so as to face the first magnet or the second magnet in an optical-axis direction.
9 more elements
A camera device comprising:
- a housing;
- a bobbin movably disposed with respect to the housing;
- a first magnet disposed on a first side portion of the bobbin and a second magnet disposed on a second side portion of the bobbin different from the first side portion of the bobbin;
- a coil disposed on the housing, the coil facing the first magnet and interacting with the first magnet to move the bobbin along an optical axis;
- a yoke disposed on a side portion of the housing corresponding to the second side portion of the bobbin;
- and
- a ball member disposed between the second side portion of the bobbin and the side portion of the housing, the ball member maintaining a distance between the second side portion of the bobbin and the side portion of the housing in a first direction perpendicular to the optical axis under a preload provided by magnetic attraction between the second magnet and the yoke,
- wherein the second magnet is disposed between the yoke and the first magnet, the yoke and the second magnet being located to directly face each other with no coil therebetween.
5 more elements
Dependencies are inferred from the claim text.