Patent ID: 11880090
Assignee: TDK TAIWAN CORP.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. An optical element driving mechanism, comprising:
a movable part, including an optical element holder for connecting an optical element, wherein the optical element is configured to receive an incident light adjusted by an optical path adjusting unit;
a fixed part, wherein the movable part is movable relative to the fixed part;
a driving assembly, configured to drive the movable part to move relative to the fixed part, having a first coil, a second coil, a third coil, a first magnet, and a second magnet;
a driving assembly holder, connected to at least a part of the driving assembly;
a supporting assembly, wherein the movable part is movable relative to the fixed part in multiple dimensions via the supporting assembly; and
a sensing assembly for sensing the movement of the movable part relative to the fixed part;
wherein the first coil and the first magnet are configured to drive the optical element holder to move along a first dimension relative to the driving assembly holder;
wherein the second coil and the second magnet are configured to drive the driving assembly holder to move along a second dimension relative to the fixed part;
wherein the third coil and the first magnet are configured to drive the driving assembly holder to move along a third dimension relative to the fixed part;
wherein the second dimension is parallel to an optical axis of the optical element;
wherein the supporting assembly includes a first elastic element that has a plate-shaped structure, and the optical element holder is movably connected to the driving assembly holder via the first elastic element;
wherein the first dimension is parallel to a first direction, the second dimension is parallel to a second direction, and the third dimension is parallel to a third direction, wherein the first, second, and third directions are perpendicular to each other;
wherein the sensing assembly includes a first sensing element for sensing the movement of the optical element holder relative to the driving assembly holder in the first dimension, a second sensing element for sensing the movement of the driving assembly holder relative to the fixed part in the second dimension, and a third sensing element for sensing the movement of the driving assembly holder in the third dimension relative to the fixed part;
wherein the sensing assembly further includes a first control unit electrically connected to the driving element and the second sensing element and controlling the driving element according to the sensing signal output by the second sensing element;
wherein the first control unit and the second sensing element are located in a packaging unit;
wherein the first and third sensing elements and the driving assembly are electrically connected to an external control unit;
wherein the first control unit is electrically connected to the external control unit;
wherein the packaging unit is located in the optical element driving mechanism;
wherein the first and third sensing elements are located in the optical element driving mechanism; and
wherein the external control unit is located outside the optical element driving mechanism.