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    OPTICAL DISC AND OPTICAL DISC DEVICE
    4.
    发明申请
    OPTICAL DISC AND OPTICAL DISC DEVICE 审中-公开
    光盘和光盘设备

    公开(公告)号：US20080151728A1

    公开(公告)日：2008-06-26

    申请号：US11960383

    申请日：2007-12-19

    申请人： Keiichiro Yusu ,  Naomasa Nakamura ,  Nobuhisa Yoshida ,  Yasuaki Ootera

    发明人： Keiichiro Yusu ,  Naomasa Nakamura ,  Nobuhisa Yoshida ,  Yasuaki Ootera

    IPC分类号： G11B7/20

    CPC分类号： G11B7/24038 ,  G11B7/2585 ,  G11B7/259

    摘要： An optical disc is provided which realizes desired optical properties, which has a transmissive reflection layer causing no deformation and the like of minute convex pits, and which can realize superior reproduction properties even when high density recording is performed. The above optical disc has at least three information layers independent with respect to a light incident surface, and a reflection layer formed on an information layer other than the layers most close to and most far from the light incident surface has a thickness of 5 to 20 nm and has a refractive index of 3.0 or more and an extinction coefficient of 0.6 or less with respect to the wavelength of incident laser light. This reflection layer is preferably composed of at least one material selected from the group consisting of Si, a SiCr alloy, a SiNb alloy, a SiW alloy, and SiC.

    摘要翻译： 提供了实现期望的光学特性的光盘，其具有不产生微小凹坑的变形等的透射反射层，并且即使在执行高密度记录时也可以实现优异的再现特性。 上述光盘具有与光入射面独立的至少三个信息层，形成在信息层以外的反射层，其除了与光入射面最近且最远的层以外的信息层的厚度为5〜20 并且相对于入射激光的波长具有3.0以上的折射率和0.6以下的消光系数。 该反射层优选由选自Si，SiCr合金，SiNb合金，SiW合金和SiC中的至少一种材料构成。

    OPTICAL DISK, OPTICAL DISK APPARATUS, AND OPTICAL DISK REPRODUCING METHOD
    5.
    发明申请
    OPTICAL DISK, OPTICAL DISK APPARATUS, AND OPTICAL DISK REPRODUCING METHOD 审中-公开
    光盘，光盘设备和光盘再现方法

    公开(公告)号：US20070242596A1

    公开(公告)日：2007-10-18

    申请号：US11690376

    申请日：2007-03-23

    申请人： Yasuaki Ootera ,  Nobuhisa Yoshida ,  Naomasa Nakamura

    发明人： Yasuaki Ootera ,  Nobuhisa Yoshida ,  Naomasa Nakamura

    IPC分类号： G11B7/24 ,  G11B3/74

    CPC分类号： G11B7/24038

    摘要： According to one embodiment, a multilayer optical disk includes three or more recording layers, and one of conditions (1) Rn/((Rn−1+Rn−2)/2)>0.6, and (2) Rn×(100−Rn−1)2/(Rn−2×Rn−1×Rn−1)>30 is satisfied, where Rn(%) is a reflectivity of an nth layer (n>2) when seen from a surface on which a reproducing light is incident.

    摘要翻译： 根据一个实施例，多层光盘包括三个或更多个记录层，并且条件（1）中的一个R n /（（R n-1 + R＆lt; SUB > 2，...，0.6，和（2）R n x（100-R n-1）2 / 满足以下条件：其中，R 1，其中，R n，n，n，x，n，n， / SUB>（％）是从再现光入射的表面观察时第n层（n> 2）的反射率。

    INFORMATION RECORDING MEDIUM AND OPTICAL DISC APPARATUS
    6.
    发明申请
    INFORMATION RECORDING MEDIUM AND OPTICAL DISC APPARATUS 审中-公开
    信息记录媒体和光盘设备

    公开(公告)号：US20070058516A1

    公开(公告)日：2007-03-15

    申请号：US11469608

    申请日：2006-09-01

    申请人： Kazuo Watabe ,  Yasuaki Ootera ,  Nobuhisa Yoshida ,  Naomasa Nakamura

    发明人： Kazuo Watabe ,  Yasuaki Ootera ,  Nobuhisa Yoshida ,  Naomasa Nakamura

    IPC分类号： G11B7/00 ,  G11B3/70

    CPC分类号： G11B7/24038

    摘要： An embodiment of the invention, an information recording medium has a first recording layer, a second recording layer which is provided with respect to the first recording layer through a first space layer with a first thickness, a third recording layer which is provided with respect to the second recording layer through a second space layer whose thickness is different from the first space layer and is set to a predetermined magnitude with respect to the thickness of the first space layer, a first substrate which supports the first recording layer, and a second substrate which supports the third recording layer, and it is possible to manufacture with high productivity an information recording medium having three or more recording layers hard to cause interlayer crosstalk.

    摘要翻译： 本发明的实施例中，信息记录介质具有第一记录层，通过具有第一厚度的第一空间层相对于第一记录层设置的第二记录层，相对于第一记录层设置的第三记录层 所述第二记录层通过第二空间层，所述第二空间层的厚度与所述第一空间层不同，并且相对于所述第一空间层的厚度被设定为预定的大小;第一基板，其支撑所述第一记录层;以及第二基板 其支持第三记录层，并且可以以高生产率制造具有三层或更多层难以引起层间串扰的记录层的信息记录介质。

    Optical Disc, Optical Disc Device, and Optical Disc Reproducing Method
    8.
    发明申请
    Optical Disc, Optical Disc Device, and Optical Disc Reproducing Method 审中-公开
    光盘，光盘装置和光盘再现方法

    公开(公告)号：US20080056114A1

    公开(公告)日：2008-03-06

    申请号：US11848150

    申请日：2007-08-30

    申请人： Yasuaki Ootera ,  Nobuhisa Yoshida ,  Naomasa Nakamura

    发明人： Yasuaki Ootera ,  Nobuhisa Yoshida ,  Naomasa Nakamura

    IPC分类号： G11B3/70 ,  B32B3/02

    CPC分类号： G11B7/266 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/2467 ,  G11B7/2472 ,  G11B7/248 ,  G11B7/249 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/259 ,  G11B7/263

    摘要： According to one embodiment, disclosed is an optical disc in which information is recorded by a pit pattern and which includes a reflection membrane. When concavities and convexities of the pits are opposite to those of a usual case, the reflection membrane is formed on the pits in the form of a two-layer membrane of silver or a silver alloy and aluminum or an aluminum alloy. The reflection membrane is formed with a two-layer structure including a first layer and a second layer different from the first layer. The material of the first layer is aluminum, an aluminum alloy or aluminum oxide. The second layer contacts the first layer and its material is silver or a silver alloy.

    摘要翻译： 根据一个实施例，公开了一种光盘，其中信息通过凹坑图案记录并且包括反射膜。 当凹坑的凹凸与通常的情况相反时，反射膜以银或银合金和铝或铝合金的双层膜的形式形成在凹坑上。 反射膜由具有不同于第一层的第一层和第二层的双层结构形成。 第一层的材料是铝，铝合金或氧化铝。 第二层接触第一层，其材料是银或银合金。