Camera module having mechanical image stabilization mechanism
First Claim
Patent Images
1. A camera module having a mechanical image stabilization mechanism, comprising:
- a printed circuit board;
an image sensor coupled to the printed circuit board;
a base disposed over the printed circuit board and the image sensor,a cover coupled to the base;
a mover disposed inside the cover and including a magnet, wherein the magnet includes a first magnet, a second magnet, a third magnet disposed opposite to the first magnet, and a fourth magnet disposed opposite to the second magnet, fixed to the mover;
a coil including a first coil, a second coil, a third coil disposed opposite to the first coil, and a fourth coil disposed opposite to the second coil, andwherein the first coil, the second coil, the third coil, and the fourth coil are disposed facing the first magnet, the second magnet, the third magnet, and the fourth magnet, respectively;
an elastic member supporting the mover; and
a terminal including a first terminal, a second terminal, a third terminal, and a fourth terminal, electrically connecting the printed circuit board to the first coil, the second coil, the third coil, and the fourth coil, respectively;
wherein the mover is stationary at an initial position when no current is applied to the coil and a gap is present between a bottom surface of the mover and an upper surface of the base;
wherein the first coil is electrically connected to the first terminal, the second coil is electrically connected to the second terminal, the third coil is electrically connected to the third terminal, and the fourth coil is electrically connected to the fourth terminal;
wherein the terminal is disposed on the base, configured to electrically connecting the coil and the printed circuit board; and
wherein a first signal is applied to the first coil and the third coil, and a second signal is applied to the second coil and the fourth coil.
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Abstract
The present disclosure relates to a camera module including a fixture; a moving part centrally coupled with a lens and arranged to move relative to the fixture; three or more magnets arranged at a periphery of the moving part; and three or more coils arranged from an inner surface of the fixture to areas opposite to the three or more magnets, where each of the coils independently receives a control signal so that the moving part moves to a height direction and tilted relative to a central axis of the moving part, whereby a lens can be axially moved and tilted at the same time using arrangement of a single set of coils and magnets.
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Citations
20 Claims
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1. A camera module having a mechanical image stabilization mechanism, comprising:
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a printed circuit board; an image sensor coupled to the printed circuit board; a base disposed over the printed circuit board and the image sensor, a cover coupled to the base; a mover disposed inside the cover and including a magnet, wherein the magnet includes a first magnet, a second magnet, a third magnet disposed opposite to the first magnet, and a fourth magnet disposed opposite to the second magnet, fixed to the mover; a coil including a first coil, a second coil, a third coil disposed opposite to the first coil, and a fourth coil disposed opposite to the second coil, and wherein the first coil, the second coil, the third coil, and the fourth coil are disposed facing the first magnet, the second magnet, the third magnet, and the fourth magnet, respectively; an elastic member supporting the mover; and a terminal including a first terminal, a second terminal, a third terminal, and a fourth terminal, electrically connecting the printed circuit board to the first coil, the second coil, the third coil, and the fourth coil, respectively; wherein the mover is stationary at an initial position when no current is applied to the coil and a gap is present between a bottom surface of the mover and an upper surface of the base; wherein the first coil is electrically connected to the first terminal, the second coil is electrically connected to the second terminal, the third coil is electrically connected to the third terminal, and the fourth coil is electrically connected to the fourth terminal; wherein the terminal is disposed on the base, configured to electrically connecting the coil and the printed circuit board; and wherein a first signal is applied to the first coil and the third coil, and a second signal is applied to the second coil and the fourth coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14, 15, 16, 17)
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8. A camera module, comprising:
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a printed circuit board; an image sensor coupled to the printed circuit board; a lens disposed above the image sensor; a housing including a base disposed over the printed circuit board, a cover, coupled to the base, and a coil disposed on the housing, wherein the coil includes a first coil, a second coil, a third coil disposed opposite to the first coil, and a fourth coil disposed opposite to the second coil, and wherein the printed circuit board is coupled to the housing; a mover disposed inside the housing and including a bobbin coupled to the lens and a magnet fixed to the mover, wherein the magnet includes a first magnet, a second magnet, a third magnet disposed opposite to the first magnet, and a fourth magnet disposed opposite to the second magnet; an elastic member supporting the mover between the housing and the mover; and a terminal disposed on the base and electrically connecting the coil to the printed circuit board, wherein the terminal includes a first terminal, a second terminal, a third terminal, and a fourth terminal; wherein the mover is stationary at an initial position when no current is applied to the coil and a gap is present between a bottom surface of the mover and an upper surface of the base, wherein the first coil, the second coil, the third coil, and the fourth coil are disposed facing the first magnet, the second magnet, the third magnet, and the fourth magnet, respectively; wherein the first coil is electrically connected to the first terminal, the second coil is electrically connected to the second terminal, the third coil is electrically connected to the third terminal, and the fourth coil is electrically connected to the fourth terminal; wherein the first coil and the third coil are one set of coils, and the second coil and the fourth coil are another set of coils; and wherein the one set of coils and the another set of coils are configured to be separately controlled by same or different control signals from the printed circuit board via the terminal. - View Dependent Claims (9, 10, 11, 12)
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18. A lens driving apparatus comprising:
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a housing including a base, a cover coupled to the base, and a coil disposed on the housing, wherein the coil includes a first coil, a second coil, a third coil disposed opposite to the first coil, and a fourth coil disposed opposite to the second coil; a mover disposed inside the housing and including a bobbin coupled to a lens and a magnet fixed to the mover, wherein the magnet includes a first magnet, a second magnet, a third magnet disposed opposite to the first magnet, and a fourth magnet disposed opposite to the second magnet; an elastic member supporting the mover between the housing and the mover; and a terminal disposed on the base and electrically connecting the coil to a printed circuit board, wherein the terminal includes a first terminal, a second terminal, a third terminal, and a fourth terminal; wherein the mover is stationary at an initial position when no current is applied to the coil and a gap is present between a bottom surface of the mover and an upper surface of the base, wherein the first coil, the second coil, the third coil, and the fourth coil are disposed facing the first magnet, the second magnet, the third magnet, and the fourth magnet, respectively; wherein the first coil is electrically connected to the first terminal, the second coil is electrically connected to the second terminal, the third coil is electrically connected to the third terminal, and the fourth coil is electrically connected to the fourth terminal; wherein a first signal is applied to the first coil and the third coil, and a second signal is applied to the second coil and the fourth coil; and wherein when current is applied to the coil, the coil is fixed and the magnet is moving such that the magnet is configured to move relative to the coil. - View Dependent Claims (19, 20)
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Specification