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US 2021/0341817 A1Published application
Voice coil motor
AssigneeLG Innotek Co., Ltd.
InventorsSang Ok PARK, Seong Min LEE
Life of this patent
Estimating the term…
Abstract
A VCM is disclosed, the motor including a stator including a first driving unit, a rotor arranged inside the stator, including a second driving unit responding to the first driving unit and mounted therein with a lens, a base fixing the stator, and an elastic member coupled to the rotor to float the rotor from the base in a case a driving signal for driving the first and second driving units is not applied to the first and second driving units.
Claims20
A voice coil motor, comprising:
- a cover comprising an upper plate and a lateral plate extending from the upper plate;
- a bobbin disposed in the cover member;
- a base disposed below the bobbin and coupled with the lateral plate of the cover;
- a magnet disposed between the lateral plate of the cover and the bobbin;
- a coil facing the magnet;
- and
- an elastic member coupled with the bobbin,
- wherein the elastic member is configured to distance the bobbin from the base at an initial position when no current is applied to the coil,
- wherein the bobbin is configured to move from the initial position to a close-up focus position in a first direction distancing from the base when a first driving current is applied to the coil,
- wherein the bobbin is configured to move from the initial position to an infinite focus position in a second direction approaching the base when a second driving current is applied to the coil, and
- wherein a first stroke length between the initial position and the close-up focus position is greater than a second stroke length between the initial position and the infinite focus position.
8 more elements
A voice coil motor, comprising:
- a cover comprising an upper plate and a lateral plate extending from the upper plate;
- a bobbin disposed in the cover member;
- a base disposed below the bobbin and coupled with the lateral plate of the cover;
- and
- a coil and a magnet disposed in the cover and configured to move the bobbin in an optical axis direction,
- wherein the bobbin is distanced from the base at an initial position when no current is applied to the coil,
- wherein the bobbin is configured to move from the initial position to a close-up focus position in a first direction distancing from the base when a first driving current is applied to the coil,
- wherein the bobbin is configured to move from the initial position to an infinite focus position in a second direction approaching the base when a second driving current is applied to the coil, and
- wherein a first stroke length between the initial position and the close-up focus position is greater than a second stroke length between the initial position and the infinite focus position.
6 more elements
A voice coil motor, comprising:
- a cover comprising an upper plate and a lateral plate extending from the upper plate;
- a bobbin disposed in the cover member;
- a base disposed below the bobbin and coupled with the lateral plate of the cover;
- a magnet disposed between the lateral plate of the cover and the bobbin;
- and
- a coil facing the magnet.
3 more elements
Dependencies are inferred from the claim text.