Integrated optical component, optical pickup, and optical disc device
    61.
    发明授权
    Integrated optical component, optical pickup, and optical disc device 有权
    集成光学部件,光学拾取器和光盘装置

    公开(公告)号:US06529454B1

    公开(公告)日:2003-03-04

    申请号:US09508169

    申请日:2000-03-08

    IPC分类号: G11B700

    摘要: A cylindrical lens 39 for generating focussing error signals is formed as one with a portion of an optical component 33 of a transparent material lying on an optical path L2 that is an optical path of a return light beam from the optical member 33. This configuration assures a small size while reducing the production cost and improving operational reliability.

    摘要翻译: 用于产生聚焦误差信号的柱面透镜39形成为具有位于作为来自光学构件33的返回光束的光路的光路L2上的透明材料的光学部件33的一部分的柱面透镜39.这种构造确保 体积小,同时降低生产成本,提高运行可靠性。