Sensor driving device including sma wires
AssigneeLG Innotek Co., Ltd.
InventorsHyeon Jun JANG, Jung Cheol KIM, Jung Seok OH
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Abstract
A sensor driving device according to an embodiment includes a fixed part including a first substrate on which a first lead pattern part and a first pad are formed; a moving part spaced apart from the fixed part and including a sensor; and a wire part disposed between the moving part and the fixed part, wherein the wire part includes a first wire part of a shape memory alloy having both ends connected to the first pad and moving the moving part with respect to the fixed part; and a second wire part having one end connected to the first lead pattern part and the other end connected to the moving part to elastically support the moving part.
Claims20
A sensor driving device comprising:
- a fixed part;
- a moving part spaced apart from the fixed part;
- and
- a wire part disposed between the moving part and the fixed part,
- wherein the wire part includes a shape memory alloy wire part connected to the fixed part and the moving part and configured to move the moving part with respect to the fixed part.
A camera module comprising:
- an image sensor;
- a lens module disposed on the image sensor;
- a first actuator configured to drive the lens module;
- and
- a second actuator configured to drive the image sensor;
- wherein the first actuator includes:
- a fixed part;
- a moving part spaced apart from the fixed part;
- and
- a wire part disposed between the moving part and the fixed part,
- wherein the wire part includes a shape memory alloy wire part connected to the fixed part and the moving part and configured to move the moving part with respect to the fixed part,
- wherein both ends of the shape memory alloy wire part are connected to the fixed part,
- wherein a portion between the both ends of the shape memory alloy wire part is connected to the moving part,
- wherein the shape memory alloy wire part includes:
- a first group of first wires configured to move the moving part in a first axis direction perpendicular to an optical axis direction of the lens module with respect to the fixed part;
- a second group of second wires configured to move the moving part in a second axis direction perpendicular to the optical axis direction and the first axis direction with respect to the fixed part;
- and
- a third group of first wires configured to rotate the moving part with the optical axis direction as the rotational axis with respect to the fixed part.
Dependencies are inferred from the claim text.