Optical pickup device
    1.
    发明授权
    Optical pickup device 失效
    光学拾取装置

    公开(公告)号:US06614720B1

    公开(公告)日:2003-09-02

    申请号:US09559515

    申请日:2000-04-27

    IPC分类号: G11B700

    摘要: Beam shaping means may have a shaping ratio set to allow a light beam emitted from a semiconductor laser and having an elliptic intensity distribution to have an ellipticity of no more than two to obtain a spot achieving high light availability and reduced in size. Furthermore, the shaping ratio can be set to no more than 2.5 to allow a polalized-beam splitter (light separation means) and other components to be arranged in a converged flux passing between the semiconductor laser and a collimator lens.

    摘要翻译: 光束成形装置可以具有设置成允许从半导体激光器发射的并且具有椭圆形强度分布的光束具有不大于2的椭圆率的成形比,以获得实现高光可用性并减小尺寸的光斑。 此外,成形比可以设定为不大于2.5,以允许在半导体激光器和准直透镜之间通过的会聚通量中布置有光束分束器(光分离装置)和其他部件。