• 제목/요약/키워드: Pickup

검색결과 360건 처리시간 0.024초

CD/DVD 겸용 광 픽업 액추에이터의 설계 (CD/DVD Compatible Optical Pickup Actuator Design)

  • 이문구;권대갑;이관철;정회원
    • 한국정밀공학회지
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    • 제15권7호
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    • pp.98-103
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    • 1998

  • Recently, DVD/CD compatible driver is needed for DVD and CD is widely used as a new optical data restoring device. The optical systems of DVD and CD driver are different because they have different optical feature. If only one objective lens is used, the change of an aperture or a dual focal length of the lens is required. This method, however, increases the number of parts and results in loss of the power of laser light. Hence, we propose a dual lens actuator design that can read DVD and CD respectively. Albeit magnetic spring is important mechanism in the dual lens actuator design, there has not been the systematic approach to design the mechanism in the preceding researches. In this article. the guideway to design magnetic spring is presented by using the qualitative theoretical approach and the finite element analysis.

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