中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

80 records (took 0.03 seconds)

    Optical disk system having objective lens with a numerical aperture related to thickness of protective layer
    73.
    发明授权
    Optical disk system having objective lens with a numerical aperture related to thickness of protective layer 失效
    具有与保护层厚度相关的数值孔径的物镜的光盘系统

    公开(公告)号：US06219308B1

    公开(公告)日：2001-04-17

    申请号：US09192904

    申请日：1998-11-16

    Applicant: Tetsu Watanabe ,  Yoshio Aoki

    Inventor： Tetsu Watanabe ,  Yoshio Aoki

    IPC: G11B1100

    CPC classification number: G11B7/1372 ,  G11B7/0037 ,  G11B7/00718 ,  G11B7/1374 ,  G11B7/24038 ,  G11B7/24059 ,  G11B11/10532 ,  G11B11/10534 ,  G11B11/10541 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/10558 ,  G11B11/10584 ,  G11B2007/13727

    Abstract: Disclosed is a magneto-optical disc system comprising a magneto-optical disc 40 with a light-transmitting cover 41, an objective lens 2 for bundling or focusing a laser beam on a magnetic recording layer 43 of the magneto-optical disc 40 in order to perform recording and/or reproduction, and a magnetic field generating unit 9 obtained by forming a coil pattern 7 in an optical glass 8. In the above system, the thickness t2 of the light-transmitting cover 41 is set to fall within the range of 0.6 to 0.1 mm, and the numerical aperture (NA) of the objective lens 2 is set to fall within the range of 0.55 to 0.70, so as to obtain high-density recording and/or reproduction.

    Abstract translation: 公开了一种磁光盘系统，其包括具有透光盖41的磁光盘40，用于将激光束聚集或聚焦在磁光盘40的磁记录层43上的物镜2，以便 执行记录和/或再现，以及通过在光学玻璃8中形成线圈图案7而获得的磁场产生单元9.在上述系统中，透光罩41的厚度t2设定在 0.6〜0.1mm，物镜2的数值孔径（NA）设定在0.55〜0.70的范围内，从而获得高密度的记录和/或再现。

    Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field
    76.
    发明授权
    Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field 失效
    具有恒定泄漏磁场和脉冲调制磁场的磁光记录装置

    公开(公告)号：US4959820A

    公开(公告)日：1990-09-25

    申请号：US436345

    申请日：1989-11-14

    Applicant: Hideyoshi Horimai ,  Yoshio Aoki

    Inventor： Hideyoshi Horimai ,  Yoshio Aoki

    IPC: G11B11/10 ,  G11B11/105

    CPC classification number: G11B11/10536

    Abstract: A magnetooptical recording apparatus is disclosed which is capable of performing real-time overwrite operation. The apparatus comprises a laser beam and focusing parts thereof, and a pulse magnetic field generator device, procided on both sides of a magnetooptical recording medium, respectively. The laser beam and focusing parts thereof are formed of an objective lens connected to a moving coil which is provided with a magnet, thus the objective lens is movable relative to a magnetic layer of the magnetooptical recording medium by the interaction between the magnet and the moving coil. The magnet generates and applies a D.C. magnetic field of one polarity perpendicular to the magnetic thin film around a point where the laser beam is focused, while the pulse magnetic field generator device generates pulse magnetic field of the opposite polarity modulated by information signal around the point where the laser beam is focused. Thus one and opposite polarity magnetic field pulse row obtained by a sum of the D.C. magnetic field and the pulse magnetic field is applied to the magnetic thin film upon laser beam irradiation to perform the real-time overwrite operation.

    Magneto-optical recording apparatus having an inversion signal detecting means
    78.
    发明授权
    Magneto-optical recording apparatus having an inversion signal detecting means 失效
    具有反转信号检测装置的磁光记录装置

    公开(公告)号：US4907211A

    公开(公告)日：1990-03-06

    申请号：US184445

    申请日：1988-03-22

    Applicant: Hideyoshi Horimai ,  Yoshio Aoki

    Inventor： Hideyoshi Horimai ,  Yoshio Aoki

    IPC: G11B11/10 ,  G11B11/105

    CPC classification number: G11B11/10528 ,  G11B11/1051 ,  G11B11/1053 ,  G11B11/10536

    Abstract: The present invention relates to a magneto-optical recording apparatus, for example, as shown in FIG. 3, which is capable of rewriting information written in a magneto-optical recording medium by overwriting, wherein the magneto-optical recording medium 1 is irradiated with a laser light LB corresponding to an information signal only when the magneto-optical recording medium 1 is applied with a magnetic field sufficient to invert the magnetizing direction of the magneto-optical recording medium 1, whereby a noise-up region is prevented from being formed and high density recording can be satisfactorily carried out.

    Abstract translation: PCT No.PCT / JP87 / 00519 Sec。 371日期1988年3月22日 102（e）1988年3月22日PCT PCT 1987年7月16日PCT公布。 出版物WO88 / 01093 日期：1988年2月11日。磁光记录装置技术领域本发明涉及例如如图1所示的磁光记录装置。 3，其能够通过重写来重写写在磁光记录介质中的信息，其中仅当应用磁光记录介质1时，磁光记录介质1被照射对应于信息信号的激光LB 具有足以反转磁光记录介质1的磁化方向的磁场，从而防止形成噪声增大区域，并且可以令人满意地进行高密度记录。

    Dehumidifying container
    79.
    发明授权
    Dehumidifying container 失效
    除湿容器

    公开(公告)号：US4394144A

    公开(公告)日：1983-07-19

    申请号：US299263

    申请日：1981-09-03

    Applicant: Yoshio Aoki

    Inventor： Yoshio Aoki

    IPC: B01D53/26 ,  B01D53/14

    CPC classification number: B01D53/261

    Abstract: A dehumidifying container comprises an inner container having an opening at its upper end, and a bottom portion. The inner container is filled with a dehumidifying agent and has a discharge pipe provided upright at the center of its bottom portion. The discharge pipe has at least one slit in a wall thereof and an open lower end which protrudes downwardly through the bottom portion of the inner container. The inner container is detachably fitted into an outer container in such a manner that a space having a predetermined volume is formed between the respective bottom portions of the inner and outer containers. The dehumidifying agent absorbs moisture from the air and the so formed solution of the agent flows readily through the or each slit in the discharge pipe out through the open lower end of the pipe, and into said space. The upper end of the pipe is also open to assist such flow.

    Abstract translation: 除湿容器包括在其上端具有开口的内部容器和底部。 内容器装有除湿剂，并且在其底部的中心具有直立设置的排出管。 排出管在其壁中具有至少一个狭缝，并且通过内部容器的底部向下突出的敞开的下端。 内部容器可拆卸地装配到外部容器中，使得在内部和外部容器的相应底部之间形成具有预定体积的空间。 除湿剂从空气中吸收水分，所形成的试剂溶液容易地通过排出管中的每个狭缝流过管道的敞开的下端并进入所述空间。 管道的上端也是开放的，以帮助这种流动。

Patent Agency Ranking