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US 12,710,615 B2Granted
Optical element drive mechanism
AssigneeActutek Corporation
InventorsShu-Shan Chen, Chieh-An Chang, Pai-Jui Cheng, Chao-Chang Hu
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Abstract
An optical element drive mechanism is provided. The optical element drive mechanism includes an immovable part, a movable part, and a drive assembly. The movable part is connected to an optical element that includes an optical axis. The movable part is movable relative to the immovable part. The drive assembly drives the movable part to move relative to the immovable part.
Claims20
An optical element drive mechanism, comprising:
- an immovable part;
- a movable part connected to an optical element that has an optical axis, wherein the movable part is movable relative to the immovable part;
- a sensing assembly sensing the movement of the movable part;
- and
- a drive assembly driving the movable part to move relative to the immovable part, wherein the drive assembly comprises:
- a piezoelectric element comprising a piezoelectric material, wherein the piezoelectric element generates a driving force;
- a transmission element extending in a first direction, wherein the transmission element transmits the driving force;
- a contact element in direct contact with the transmission element;
- and
- a compression element for generating a compression force, so that the contact element is in contact with the transmission element, wherein the compression element has a compression-element opening corresponding to the contact element, and the contact element is received in the compression-element opening,
- wherein the driving force is transmitted to the contact element by the transmission element, and the compression element thereby drives the movable part to move relative to the immovable part in the first direction, and
- wherein the contact element comprises a plurality of metal pieces located on different sides of the compression-element opening.
9 more elements
Dependencies are inferred from the claim text.