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    Optical pickup device and optical disc reproducing apparatus including multiple objective lenses
    1.
    发明授权
    Optical pickup device and optical disc reproducing apparatus including multiple objective lenses 失效
    包括多个物镜的光学拾取装置和光盘再现装置

    公开(公告)号：US6034939A

    公开(公告)日：2000-03-07

    申请号：US80434

    申请日：1998-05-18

    申请人： Takeharu Takasawa ,  Hiroyuki Ito ,  Shoji Sato ,  Hidekazu Seto ,  Junichi Suzuki

    发明人： Takeharu Takasawa ,  Hiroyuki Ito ,  Shoji Sato ,  Hidekazu Seto ,  Junichi Suzuki

    IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B19/12

    CPC分类号： G11B7/1353 ,  G11B19/12 ,  G11B7/0925 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/139 ,  G11B2007/0006 ,  G11B7/0945

    摘要： An optical pickup device which assures interchangeability between plural types of optical discs with different layered structures, such as CD, CD-R or DVD, which is reduced in size and which realizes reproduction of high reliability information signals. The pickup device includes a light source for radiating laser light beams of different wavelengths in association with the plural types of the optical discs with different layered structures, an objective lens for converging the laser light beam radiated from the light source on the signal recording layer of the optical disc, an objective lens switching mechanism for switching and moving the objective lens to the recording/reproducing position, light splitting means for splitting the incident laser light beam from the light source from the reflected laser light beam reflected from the optical disc, plural photodetectors for receiving the reflected laser light split by the light splitting means, and an optical system correction means for correcting the objective lens.

    摘要翻译： 一种光学拾取装置，其确保具有诸如CD，CD-R或DVD的不同分层结构的多种类型的光盘之间的互换性，其尺寸减小并且实现了高可靠性信息信号的再现。 拾取装置包括用于与具有不同分层结构的多种类型的光盘相关联地辐射不同波长的激光束的光源，用于将从光源照射的激光束会聚在信号记录层的信号记录层上的物镜 光盘，用于将物镜切换和移动到记录/再现位置的物镜切换机构，用于将来自光源的入射激光束从来自光盘反射的反射激光束分离的分光装置，多个 用于接收由分光装置分离的反射激光的光电检测器，以及用于校正物镜的光学系统校正装置。

    Optical pickup device and optical disc reproducing apparatus
    2.
    发明授权
    Optical pickup device and optical disc reproducing apparatus 失效
    光拾取装置和光盘再现装置

    公开(公告)号：US6016301A

    公开(公告)日：2000-01-18

    申请号：US827224

    申请日：1997-03-27

    申请人： Takeharu Takasawa ,  Hiroyuki Ito ,  Shoji Sato ,  Hidekazu Seto ,  Junichi Suzuki

    发明人： Takeharu Takasawa ,  Hiroyuki Ito ,  Shoji Sato ,  Hidekazu Seto ,  Junichi Suzuki

    IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B19/12

    CPC分类号： G11B7/1353 ,  G11B19/12 ,  G11B7/0925 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/139 ,  G11B2007/0006 ,  G11B7/0945

    摘要： An optical pickup device which assures interchangeability between plural types of optical discs with different layered structures, such as CD, CD-R or DVD, which is reduced in size and which realizes reproduction of high reliability information signals. The pickup device includes a light source for radiating laser light beams of different wavelengths in association with the plural types of the optical discs with different layered structures, an objective lens for converging the laser light beam radiated from the light source on the signal recording layer of the optical disc, an objective lens switching mechanism for switching and moving the objective lens to the recording/reproducing position, light splitting means for splitting the incident laser light beam from the light source from the reflected laser light beam reflected from the optical disc, plural photodetectors for receiving the reflected laser light split by the light splitting means, and an optical system correction means for correcting the objective lens.

    摘要翻译： 一种光学拾取装置，其确保具有诸如CD，CD-R或DVD的不同分层结构的多种类型的光盘之间的互换性，其尺寸减小并且实现了高可靠性信息信号的再现。 拾取装置包括用于与具有不同分层结构的多种类型的光盘相关联地辐射不同波长的激光束的光源，用于将从光源照射的激光束会聚在信号记录层的信号记录层上的物镜 光盘，用于将物镜切换和移动到记录/再现位置的物镜切换机构，用于将来自光源的入射激光束从来自光盘反射的反射激光束分离的分光装置，多个 用于接收由分光装置分离的反射激光的光电检测器，以及用于校正物镜的光学系统校正装置。

    Magnetic head for perpendicular magnetic recording including a main pole with a lower protrusion
    7.
    发明授权
    Magnetic head for perpendicular magnetic recording including a main pole with a lower protrusion 有权
    用于垂直磁记录的磁头，包括具有下凸起的主极

    公开(公告)号：US09336798B1

    公开(公告)日：2016-05-10

    申请号：US14567590

    申请日：2014-12-11

    申请人： Yoshitaka Sasaki ,  Kazuki Sato ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki ,  Yukinori Ikegawa

    发明人： Yoshitaka Sasaki ,  Kazuki Sato ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Hironori Araki ,  Yukinori Ikegawa

    IPC分类号： G11B5/187 ,  G11B5/127 ,  G11B5/17 ,  G11B5/31

    CPC分类号： G11B5/1278 ,  G11B5/02 ,  G11B5/17 ,  G11B5/187 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3169

    摘要： A main pole includes a main body and a lower protrusion. The lower protrusion is located at a distance from a medium facing surface. The main body includes a front portion and a rear portion. The front portion has a first side surface and a second side surface. The lower protrusion has a third side surface and a fourth side surface. A first side shield has a first sidewall opposed to the first side surface. A second side shield has a second sidewall opposed to the second side surface. A bottom shield includes a receiving section. The receiving section has a third sidewall opposed to the third side surface, and a fourth sidewall opposed to the fourth side surface. The receiving section and the lower protrusion are formed in a self-aligned manner by using the first and second side shields.

    摘要翻译： 主杆包括主体和下突起。 下突出部位于与面向介质的表面相距一定距离处。 主体包括前部和后部。 前部具有第一侧表面和第二侧表面。 下突起具有第三侧表面和第四侧表面。 第一侧屏蔽具有与第一侧表面相对的第一侧壁。 第二侧屏蔽具有与第二侧表面相对的第二侧壁。 底部屏蔽包括接收部分。 接收部分具有与第三侧表面相对的第三侧壁和与第四侧表面相对的第四侧壁。 通过使用第一和第二侧面屏蔽件以自对准的方式形成接收部分和下部突出部。

    Thermally-assisted magnetic recording head including a plasmon generator
    9.
    发明授权
    Thermally-assisted magnetic recording head including a plasmon generator 有权
    热辅助磁记录头包括等离子体发生器

    公开(公告)号：US09275658B2

    公开(公告)日：2016-03-01

    申请号：US14209262

    申请日：2014-03-13

    申请人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Hironori Araki ,  Ryuji Fujii

    发明人： Yoshitaka Sasaki ,  Hiroyuki Ito ,  Shigeki Tanemura ,  Kazuki Sato ,  Hironori Araki ,  Ryuji Fujii

    IPC分类号： G11B5/00 ,  G11B5/31 ,  G11B5/48 ,  G11B5/127 ,  G11B5/60

    CPC分类号： G11B5/314 ,  G11B5/1278 ,  G11B5/4866 ,  G11B5/607 ,  G11B5/6076 ,  G11B5/6088 ,  G11B2005/0021

    摘要： A return path section includes first and second yoke portions and first, second and third columnar portions. The first and second yoke portions and the first columnar portion are located on the front side in the direction of travel of a recording medium relative to a waveguide core. The second and third columnar portions are located on opposite sides of a plasmon generator and connected to a shield. The first yoke portion connects a main pole to the first columnar portion. The second yoke portion connects the first columnar portion to the second and third columnar portions. A coil is wound around the first columnar portion. A heater and an expansion layer are located on the rear side in the direction of travel of the recording medium relative to the core.

    摘要翻译： 返回路径部分包括第一和第二轭部分以及第一，第二和第三柱状部分。 第一和第二磁轭部分和第一柱状部分位于记录介质相对于波导芯的行进方向的前侧。 第二和第三柱状部分位于等离子体发生器的相对侧并且连接到屏蔽。 第一轭部将主极连接到第一柱状部。 第二轭部将第一柱状部分连接到第二和第三柱状部分。 线圈缠绕在第一柱状部分上。 加热器和膨胀层位于记录介质相对于芯的行进方向的后侧。