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

Claim 14:
15. 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 circuit element, electrically connected to the first, second and third sensing elements;
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 driving assembly and the first sensing element are respectively located on opposite sides of the circuit element;
wherein the driving assembly and the second sensing element are respectively located on opposite sides of the circuit element;
wherein the driving assembly and the third sensing element are respectively located on opposite sides of the circuit element;
wherein the fixed part further includes a base and a casing, the casing and the base are arranged along a main axis;
wherein the base further includes a receiving portion corresponding to at least one of the first, second, and third sensing elements;
wherein the maximum size of the receiving portion is greater than the maximum size of at least one of the first, second, and third sensing elements in the first direction;
wherein a protection element arranged in the receiving part for protecting at least one of the first, second and third sensing elements;
wherein the protection element directly contacts the receiving portion and at least one of the first, second, and third sensing elements;
wherein a limiting structure adjacent to the receiving portion to limit the setting range of the protection element;
wherein the maximum size of the limiting structure is greater than the maximum size of the receiving portion in the direction perpendicular to the first direction.