Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-01-26
2009-12-01
SanMartin, J. (Department: 2837)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
C310S323010, C310S323110
Reexamination Certificate
active
07626312
ABSTRACT:
Disclosed herein are a surface acoustic wave linear motor that can be driven in opposite directions along a predetermined path, a package including the surface acoustic wave linear motor, and a lens actuator that is capable of performing an optical zoom function by adopting the surface acoustic wave linear motor package. The surface acoustic wave linear motor includes a substrate, through which a surface acoustic wave progresses, a movable part constructed such that the movable part can perform a translating movement in the opposite direction to the progressing direction of the surface acoustic wave, and electrodes for supplying the substrate with power to generate the surface acoustic wave in the substrate. According to the present invention, the surface acoustic wave linear motor is capable of performing a translating movement without the provision of an additional mechanism, unlike the conventional actuator using the rotary motor, the gear, and the lead screw. Furthermore, the surface acoustic wave linear motor is suitable for miniaturization and weight reduction, and therefore, various applications of the surface acoustic wave linear motor are possible.
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Bu Jong-Uk
Ji Chang-Hyeon
Lee Hong Degerman Kang & Waimey
LG Electronics Inc.
SanMartin J.
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