Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Design of a Tubular Type Linear Actuator for Ultra-Small Camera Module

초소형 카메라 모듈을 위한 Tubular형 선형 액츄에이터의 설계에 관한 연구

  • Jung, In-Soung (Intelligent Mechatronics Research Center, Korea Electronics Technology Institute (KETI)) ;
  • Hur, Jin (Intelligent Mechatronics Research Center, Korea Electronics Technology Institute (KETI)) ;
  • Sung, Ha-Gyeong (Intelligent Mechatronics Research Center, Korea Electronics Technology Institute (KETI))
  • 정인성 (전자부품연구원 지능메카트로닉스연구센터) ;
  • 허진 (전자부품연구원 지능메카트로닉스연구센터) ;
  • 성하경 (전자부품연구원 지능메카트로닉스연구센터)
  • Published : 2007.04.19
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Abstract

This paper presents design results of anultra-small actuator for auto focus or optical zoom function of mobile phone cameras. The consideration of the actuator is tubular type having a large hole in its center to arrange some optical lenses. The stator consists of 3-phase windings, and the mover is designed to an Nd injection permanent magnet(PM) which magnetized with multi-pole polar pattern. From the numerical analysis that taking into account the magnetizing pattern of the PM, the thrust of the designed actuator is about 40mN with the outer diameter of 7mm.

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