Camera module with piezoelectric actuator
AssigneeHon Hai Precision Industry Co., Ltd.
InventorYuan-Hsu Chou
Life of this patent
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Abstract
A camera module includes a positioning plate, a positioning frame, a spring member, a lens holder, and a piezoelectric actuator. The positioning frame is fixed to the positioning plate and defines a positioning through hole. The spring member is disposed on the positioning plate and in a compressed state. The lens holder is received in the positioning through hole and movably engaged with the positioning frame. The piezoelectric actuator is sandwiched between the compressed spring member and the lens holder. The piezoelectric actuator is operable to drive the lens holder to rotate about a central axis of the positioning frame, thereby move along the central axis relative to the positioning frame.
Claims19
A camera module comprising:
- a positioning plate;
- a positioning frame fixed to the positioning plate, the positioning frame defining a positioning through hole;
- a spring member disposed on the positioning plate;
- a lens holder received in the positioning through hole and threadedly and movably engaged with the positioning frame;
- and
- a piezoelectric actuator sandwiched between the compressed spring member and the lens holder, the spring member being in a compressed state, the piezoelectric actuator being operable to drive the lens holder to rotate about a central axis of the positioning frame and thereby move along the central axis relative to the positioning frame.
A camera module comprising:
- a positioning frame defining a positioning through hole;
- a lens holder rotatably and movably received in the positioning through hole by threaded engagement, the lens holder being operable to move along a central axis of the positioning frame when rotating about the central axis;
- a piezoelectric actuator drivably contacting the lens holder, the piezoelectric actuator being operable to drive the lens holder to rotate about the central axis;
- and
- a spring member connected to one side of the piezoelectric actuator that is opposite to the side contacting the lens holder and compressed by the piezoelectric actuator, the spring member structured and arranged to apply a counterforce to the piezoelectric actuator to maintain the drivable contact between the piezoelectric actuator and the lens holder.
Dependencies are inferred from the claim text.