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US 12,007,620 B2Granted
Lens drive device and camera module comprising same
AssigneeLG Innotek Co., Ltd.
InventorKwang Hyun Ryoo
Life of this patent
Estimating the term…
Abstract
A lens drive device includes a housing; a bobbin arranged inside the housing; a magnet arranged on the bobbin; a coil arranged on the housing and facing the magnet; a coupling member arranged on the inner surface of the housing; a roller rotatably arranged on the coupling member; and a rail arranged on the bobbin. The rail is guided according to the rotation of the roller.
Claims14
A lens driving device comprising:
- a housing;
- a bobbin disposed in the housing;
- a magnet disposed on the bobbin;
- a coil disposed on the housing and facing the magnet;
- a coupling member disposed on an inner lateral surface of the housing, the coupling member including:
- a flat plate on the inner lateral surface of the housing;
- and
- a plurality of spaced apart vertical plates extending from the flat plate toward the bobbin, each vertical plate having a hole;
- a roller rotatably disposed on the coupling member, the roller including a pair of protruding portions extending at opposite ends of the roller, each protruding portion being inserted into a corresponding hole of the holes of the vertical plates;
- and
- a rail disposed on the bobbin,
- wherein the rail is guided according to a rotation of the roller,
- wherein the bobbin comprises a first groove extending in an optical axis direction on an outer lateral surface thereof,
- wherein a length of each vertical plate in the optical axis direction is the same as a length of the first groove in the optical axis direction, and
- wherein at least a portion of each vertical plate is located in the first groove of the bobbin.
12 more elements
A lens driving device comprising:
- a cover can;
- a housing disposed in the cover can and comprising a coupling member, the coupling member including:
- a flat plate;
- and
- a plurality of spaced apart vertical plates extending from the flat plate toward the bobbin, each vertical plate having a hole;
- a bobbin disposed in the housing;
- a magnet and a coil disposed in the cover can and configured to move the bobbin in an optical axis;
- a roller rotatably coupled to the coupling member, the roller including:
- two first portions having a first diameter;
- a second portion connecting the two first portions, the second portion having a second diameter smaller than the first diameter;
- and
- a pair of protruding portions protruding from the two first portions in a direction away from the second portion, each protruding portion being inserted into a corresponding hole of the holes of the vertical plates to be rotatably coupled thereto;
- and
- a rail formed on the bobbin,
- wherein the rail is contacted with the roller,
- wherein the roller guides a movement of the rail in the optical axis direction,
- wherein the roller is rotatably fixed to the coupling member so that the roller does not move with respect to the coupling member in the optical axis direction,
- wherein the bobbin comprises a first groove extending in an optical axis direction on an outer lateral surface thereof,
- wherein a length of each vertical plate in the optical axis direction is the same as a length of the first groove in the optical axis direction, and
- wherein at least a portion of each vertical plate is located in the first groove of the bobbin.
17 more elements
Dependencies are inferred from the claim text.