Optical disk and optical disk device
    4.
    发明申请
    Optical disk and optical disk device 审中-公开
    光盘和光盘设备

    公开(公告)号:US20070230321A1

    公开(公告)日:2007-10-04

    申请号:US11713935

    申请日:2007-03-05

    IPC分类号: G11B7/24

    摘要: According to one embodiment, there is provided an optical disk including a substrate layer having a refractive index of 1.50 to 1.70 and a thickness X (μm) equal to or greater than f (n)−13 μm, a first information layer formed on the substrate layer, an adhesive layer formed on the first information layer and having a thickness Y (μm) equal to or greater than 20 μm, and a second information layer formed on the adhesive layer, wherein X+Y≦f (n)+30 μm and f(n)

    摘要翻译: 根据一个实施例,提供了一种光盘,其包括折射率为1.50至1.70的基底层和等于或大于f(n)-13μm的厚度X(mum),形成在第一信息层上的第一信息层 衬底层,形成在第一信息层上并具有等于或大于20μm的厚度Y(mum)的粘合剂层和形成在粘合剂层上的第二信息层,其中X + Y <= f(n)+ 30 mum,f(n) (n≥2+ A 2)/(n≥2-1)(n≥2+ A < 3)x1000(mum),其中“n”是基底层的折射率,A 1