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Volume 29 Issue 2
Sep.  2013
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Article Navigation >  LASER TECHNOLOGY  > 2005 >  29(2): 116-118

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The design of bi-aspherical single objective lens with numerical aperture of 0.85

  • 1.

    Center for Photonics and Electronics, Department of Precision Instrument, Qinghua University, Beijing 100084, China

  • Corresponding author: GONG Ma-li, gongml@tsinghua.edu.cn ; 
  • Received Date: 2004-03-31
    Accepted Date: 2004-06-17
  • A single objective lens with numerical aperture of 0.85 is designed as the coral component of the super high-density optical disk system,which is done with three tools respectively,i.e.two business optical design softwares Zemax and CodeV and the latest CEDDA(characteristic equations discretely defined aspherics)method.The design adopts the latest form of the single bi-aspherical lens in the world with the consideration of decenter error in the manafacture,field error in the application and a reasonable structure in practical application.So that the objective lens has a RMS wavefront error less than 1/30λ and meets the technical requivement.
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  • [1]

    ITONAGA M,ITO F,MATSUZAKI K et al.Single objective lens having numerical aperture of 0.85 for a high density optical system[J].Japan J A P,2002,41:1798～1803.
    [2]

    BRAAT J J M,SMID A,WIJNAKKER M M B.Design and production technology of replicated aspheric objective lenses for optical disk systems[J].Appl Opt,1985,24:1853～1855.
    [3]

    KUBOTA S.A lens design for optical disk systems[J].SPIE,1985,554:282～288.
    [4]

    WEI N,GONG M L.Designing an optical disk lens without analytical definition of aspheric surface[J].Appl Opt,2002,41(25):5334～5340.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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The design of bi-aspherical single objective lens with numerical aperture of 0.85

    Corresponding author: GONG Ma-li, gongml@tsinghua.edu.cn; 
  • 1. Center for Photonics and Electronics, Department of Precision Instrument, Qinghua University, Beijing 100084, China
  • Received Date: 2004-03-31
  • Accepted Date: 2004-06-17
  • Available Online: 2005-03-25

Abstract: A single objective lens with numerical aperture of 0.85 is designed as the coral component of the super high-density optical disk system,which is done with three tools respectively,i.e.two business optical design softwares Zemax and CodeV and the latest CEDDA(characteristic equations discretely defined aspherics)method.The design adopts the latest form of the single bi-aspherical lens in the world with the consideration of decenter error in the manafacture,field error in the application and a reasonable structure in practical application.So that the objective lens has a RMS wavefront error less than 1/30λ and meets the technical requivement.

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