Transactions of the Society of Information Storage Systems (정보저장시스템학회논문집)
- Volume 2 Issue 4
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- Pages.251-256
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- 2006
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- 1738-6845(pISSN)
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- 2288-2022(eISSN)
Design of a Linear Ultrasonic Actuator for Small Lens Actuation
초소형 렌즈 구동을 위한 선형 초음파 구동기 설계
- Published : 2006.12.01
Abstract
There is a great demand of micro-actuators for mobile information devices such as SFF optical drives and mobile phone cameras. However, the magnetic coils used in conventional electromagnetic motors are a major obstacle for the miniaturization because of their complicated structures and large power consumption. In this paper, a linear ultrasonic motor to actuate focusing lens of mobile devices is proposed. The new actuator uses a ring type bimorph piezoelectric material, and