Patent ID: 11874522
Assignee: TDK TAIWAN CORP.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An optical mechanism, comprising:
an immovable part;
a movable part connected to an optical element, wherein the movable part is movable relative to the immovable part;
a drive assembly driving the movable part to move relative to the immovable part; and
a guidance assembly guiding the movable part to move along a first axis;
wherein the immovable part comprises a frame, and the frame comprises a receiving space receiving the movable part;
wherein the drive assembly comprises:
a first drive element comprising a first shape memory alloy material and a first elongated structure; and
a second drive element comprising a second shape memory alloy material and a second elongated structure, wherein the movable part is driven by the drive assembly by changing a first length of the first drive element and a second length of the second drive element;

wherein the guidance assembly comprises:
a magnetically-permeable element having a magnetically-permeable material; and
a first magnetic element comprising a first pair of magnetic poles, wherein the first pair of magnetic poles comprises a north magnetic pole and a south magnetic pole that are arranged along a second axis, the first magnetic element comprises a first magnetic element surface that faces the magnetically-permeable element, and the first magnetic element surface is perpendicular to the second axis.