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    Optical recording medium and a method of manufacturing the same
    3.
    发明授权
    Optical recording medium and a method of manufacturing the same 失效
    光记录介质及其制造方法

    公开(公告)号：US06967050B2

    公开(公告)日：2005-11-22

    申请号：US09731904

    申请日：2000-12-08

    申请人： Koichiro Kishima ,  Isao Ichimura ,  Kimihiro Saito ,  Kiyoshi Osato

    发明人： Koichiro Kishima ,  Isao Ichimura ,  Kimihiro Saito ,  Kiyoshi Osato

    IPC分类号： G11B7/007 ,  G11B7/24 ,  G11B7/243 ,  G11B7/2433 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2548 ,  G11B7/2578 ,  G11B7/2585 ,  G11B7/26 ,  B32B3/02

    CPC分类号： G11B7/2548 ,  B82Y10/00 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/24 ,  G11B7/2433 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2578 ,  G11B7/2585 ,  G11B7/26 ,  G11B2007/24304 ,  G11B2007/24328

    摘要： Constructed is an optical recording medium which is so formed as to have excellent surface flatness and with respect to which information is recorded or reproduced with the use of a near-field optical system. The optical recording medium is one which performs at least one of recording and reproduction of information by irradiation of light. The optical recording medium has a substrate 1 which has fine concavities and convexities 2 formed on the surface on a side where irradiation of light is performed, and a formed film layer having at least a recording layer and having a fine concavities and convexities surface reflecting the fine concavities and convexities 2 in itself. The optical recording medium also has a light transmission flattenable film 4 which is so formed on the formed film layer as to have the fine concavities and convexities surface buried therein, and the surface of which is polished and which has a single-layer or a multi-layer structure having a hardness enabling the film to be polished, has a transmission characteristic with respect to the irradiated light to thereby permits transmission of a light irradiated with respect to this optical recording medium.

    摘要翻译： 所构成的光记录介质形成为具有优异的表面平坦性，并且利用近场光学系统记录或再现信息。 光记录介质是通过照射光进行信息的记录和再现中的至少一种的记录介质。 光记录介质具有基板1，该基板1具有形成在进行光照射的一侧的表面上的细小凹凸2，以及形成有至少具有记录层且具有反射 细小的凹凸2本身。 光学记录介质还具有透光平坦化膜4，该透光平坦化膜4形成在所形成的膜层上，以便将细小的凹凸表面埋入其中，并且其表面被抛光并具有单层或多层 具有使膜能够被研磨的硬度的层结构相对于照射光具有透射特性，从而允许透射相对于该光记录介质照射的光。

    Optical head and drive device for optical recording medium
    10.
    发明授权
    Optical head and drive device for optical recording medium 失效
    用于光学记录介质的光头和驱动装置

    公开(公告)号：US06307689B1

    公开(公告)日：2001-10-23

    申请号：US09581987

    申请日：2000-08-17

    申请人： Isao Ichimura ,  Koichiro Kishima ,  Kenji Yamamoto ,  Kiyoshi Osato

    发明人： Isao Ichimura ,  Koichiro Kishima ,  Kenji Yamamoto ,  Kiyoshi Osato

    IPC分类号： G02B702

    CPC分类号： G11B7/1374 ,  B82Y10/00 ,  G11B7/0901 ,  G11B7/0914 ,  G11B7/0925 ,  G11B7/131 ,  G11B7/1387 ,  G11B2007/13727

    摘要： An optical head (1) having an optical means for focusing a laser beam to irradiate an optical recording medium (51) is equipped with an objective lens (2) focusing a laser beam L, and a solid immersion lens (3) disposed between the objective lens (2) and the optical recording medium (51), the head comprising a holder member (4) for integrally retaining the lenses (2) and (3) and a moving mechanism (5a) for moving the holder member in a direction along an optical axis of the lenses (2) and (3), wherein an electrically conductive material is used on a surface of the optical head facing the optical recording medium (51). The numerical aperture can be made large by the solid immersion lens (3). Moreover, the air gap can be controlled with high precision according to the electrostatic capacity formed between the electrically conductive material and the optical recording medium (51). Furthermore, the moving mechanism (5a) and the signal processing for the focus servo operation can be made simpler.

    摘要翻译： 具有用于聚焦激光束以照射光学记录介质（51）的光学装置的光学头（1）配备有聚焦激光束L的物镜（2）和设置在光学记录介质 物镜（2）和光记录介质（51），头部包括用于一体地保持透镜（2）和（3）的保持构件（4）和移动机构（5a） 沿着透镜（2）和（3）的光轴，其中在面向光学记录介质（51）的光学头的表面上使用导电材料。 可以通过固体浸没透镜（3）使数值孔径变大。 此外，可以根据导电材料和光记录介质（51）之间形成的静电电容，高精度地控制气隙。 此外，可以使移动机构（5a）和聚焦伺服操作的信号处理更简单。