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US 12,222,638 B2Granted
Optical element driving mechanism
AssigneeTDK Taiwan Corp.
InventorsChen-Hung Chao, Yi-Chieh Lin, Tsung-Han Wu, Shou-Jen Liu
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Abstract
An optical element driving mechanism is provided, including a movable part, a fixed part, and a driving assembly. The movable part is for connecting the optical element. The movable part is movable relative to the fixed part. The driving assembly is used for generating a driving force to drive the movable part to move relative to the fixed part. The driving assembly further includes a first reinforcement element, for strengthening the driving force.
Claims19
An optical element driving mechanism, comprising:
- a movable part, for connecting an optical element;
- a fixed part, wherein the movable part is movable relative to the fixed part;
- and
- a driving assembly, for generating a driving force to drive the movable part to move relative to the fixed part,
- wherein the driving assembly further comprises a first reinforcement element, for strengthening the driving force,
- wherein the driving assembly further comprises:
- a driving coil, movable relative to the first reinforcement element;
- a first magnetic element, corresponding to the driving coil and fixed relative to the first reinforcement element,
- wherein the first reinforcement element comprises a magnetically conductive material,
- wherein a first magnetic element surface of the first magnetic element has a planar structure and faces the driving coil,
- wherein a first reinforcement portion of the first magnetic element has a plate-like structure and is parallel to the first magnetic element surface,
- wherein the driving coil is located between the first magnetic element and the first reinforcement portion when viewed along a first axis that is parallel to the first magnetic element surface,
- wherein the driving coil at least partially overlaps the first magnetic element and the first reinforcement portion when viewed along a second axis that is perpendicular to the first magnetic element surface,
- wherein a main axis, the first axis and the second axis overlap each other,
- wherein when viewed along the main axis, the optical element driving mechanism having a polygonal structure comprises:
- a first side, parallel to the first axis;
- a second side, parallel to the second axis;
- and
- a first corner, located between the first side and the second side,
- wherein the first reinforcement element is located at the first corner when viewed along the main axis.
17 more elements
Dependencies are inferred from the claim text.