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    Optical Head That Improves Read Signal Characteristics
    1.
    发明申请
    Optical Head That Improves Read Signal Characteristics 审中-公开
    提高读信号特性的光头

    公开(公告)号：US20080304398A1

    公开(公告)日：2008-12-11

    申请号：US11792142

    申请日：2005-12-01

    申请人： Kazutoshi Onozawa ,  Kazuhiko Yamanaka ,  Tomoaki Tojo ,  Takuya Okuda ,  Shinichi Ijima ,  Junichi Kubo

    发明人： Kazutoshi Onozawa ,  Kazuhiko Yamanaka ,  Tomoaki Tojo ,  Takuya Okuda ,  Shinichi Ijima ,  Junichi Kubo

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1374 ,  G11B7/1362 ,  G11B7/1367 ,  G11B7/1381

    摘要： In an optical head operable to record to and read from an optical recording medium, a beam emitted by a light-emitting element is reflected toward the light-emitting element by a first reflective mirror, and this reflected beam is reflected toward the optical recording medium by a second reflective mirror and focused on a recording surface of the optical recording medium. In this case, the first reflective mirror blocks a principal ray of the beam traveling toward the optical recording medium from the second reflective mirror, and the second reflective mirror consists of a plurality of concentric annular mirrors centered on the principal ray of the beam and separated from each other by a predetermined interval.

    摘要翻译： 在可操作以记录和读取光记录介质的光学头中，由发光元件发射的光束通过第一反射镜朝向发光元件反射，并且该反射光束被反射向光记录介质 通过第二反射镜并聚焦在光学记录介质的记录表面上。 在这种情况下，第一反射镜阻挡从第二反射镜朝向光学记录介质传播的光束的主光线，并且第二反射镜由以束的主光线为中心的多个同心环形反射镜组成，并分离 彼此间隔预定间隔。

    Optical pickup with reduced size
    2.
    发明授权
    Optical pickup with reduced size 有权
    光学拾音器尺寸减小

    公开(公告)号：US07209427B2

    公开(公告)日：2007-04-24

    申请号：US10870438

    申请日：2004-06-18

    申请人： Kazuhiko Yamanaka ,  Takuya Okuda ,  Shinichi Ijima ,  Tomoaki Tojo ,  Kazutoshi Onozawa ,  Junichi Kubo

    发明人： Kazuhiko Yamanaka ,  Takuya Okuda ,  Shinichi Ijima ,  Tomoaki Tojo ,  Kazutoshi Onozawa ,  Junichi Kubo

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1362 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922

    摘要： An optical pickup having a light-emitting element, an objective lens unit, a reflecting mirror and a light-receiving element, emits a beam onto an optical recording medium and uses a reflected beam to read recorded information. In the objective lens unit, a central part of a surface, facing the light-emitting element, of an objective lens disposed so that an optical axis is substantially aligned with a chief ray of the beam emitted by the light-emitting element, is a transmissive diffraction grating, and a central part of a surface of the objective lens that will face the optical recording medium is a convex mirror which bulges toward the light-emitting element. The reflecting mirror, which is annular and encompasses the optical axis of the objective lens, reflects toward the objective lens the beam from the light-emitting element that has passed through the transmissive diffraction grating and been reflected by the convex mirror. The light-receiving element receives first-order diffracted light, of the reflected beam from the recording medium, diffracted by the transmissive diffraction grating.

    摘要翻译： 具有发光元件，物镜单元，反射镜和光接收元件的光学拾取器将光束发射到光学记录介质上并使用反射光束来读取记录的信息。 在物镜单元中，面对发光元件的表面的中心部分设置为使得光轴基本上与由发光元件发射的光束的主光线对准，是物镜 透镜式衍射光栅和面向光记录介质的物镜表面的中心部分是向发光元件凸出的凸面镜。 环形并且包围物镜的光轴的反射镜朝向物镜反射来自已经通过透射衍射光栅的发光元件的光并被凸面镜反射。 光接收元件接收来自记录介质的反射光束的一级衍射光，被透射衍射光栅衍射。

    Optical pickup with reduced size
    3.
    发明申请
    Optical pickup with reduced size 有权
    光学拾音器尺寸减小

    公开(公告)号：US20050047312A1

    公开(公告)日：2005-03-03

    申请号：US10870438

    申请日：2004-06-18

    申请人： Kazuhiko Yamanaka ,  Takuya Okuda ,  Shinichi Ijima ,  Tomoaki Tojo ,  Kazutoshi Onozawa ,  Junichi Kubo

    发明人： Kazuhiko Yamanaka ,  Takuya Okuda ,  Shinichi Ijima ,  Tomoaki Tojo ,  Kazutoshi Onozawa ,  Junichi Kubo

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

    CPC分类号： G11B7/1362 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922

    摘要： An optical pickup having a light-emitting element, an objective lens unit, a reflecting mirror and a light-receiving element, emits a beam onto an optical recording medium and uses a reflected beam to read recorded information. In the objective lens unit, a central part of a surface, facing the light-emitting element, of an objective lens disposed so that an optical axis is substantially aligned with a chief ray of the beam emitted by the light-emitting element, is a transmissive diffraction grating, and a central part of a surface of the objective lens that will face the optical recording medium is a convex mirror which bulges toward the light-emitting element. The reflecting mirror, which is annular and encompasses the optical axis of the objective lens, reflects toward the objective lens the beam from the light-emitting element that has passed through the transmissive diffraction grating and been reflected by the convex mirror. The light-receiving element receives first-order diffracted light, of the reflected beam from the recording medium, diffracted by the transmissive diffraction grating.

    摘要翻译： 具有发光元件，物镜单元，反射镜和光接收元件的光学拾取器将光束发射到光学记录介质上并使用反射光束来读取记录的信息。 在物镜单元中，面对发光元件的表面的中心部分设置为使得光轴基本上与由发光元件发射的光束的主光线对准，是物镜 透镜式衍射光栅和面向光记录介质的物镜表面的中心部分是向发光元件凸出的凸面镜。 环形并且包围物镜的光轴的反射镜朝向物镜反射来自已经通过透射衍射光栅的发光元件的光并被凸面镜反射。 光接收元件接收来自记录介质的反射光束的一级衍射光，被透射衍射光栅衍射。

    Optical-component-integrated optical pickup
    4.
    发明授权
    Optical-component-integrated optical pickup 失效
    光学元件集成光学拾取器

    公开(公告)号：US06587283B2

    公开(公告)日：2003-07-01

    申请号：US09820958

    申请日：2001-03-29

    申请人： Shinichi Ijima ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa ,  Hideyuki Nakanishi

    发明人： Shinichi Ijima ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa ,  Hideyuki Nakanishi

    IPC分类号： G02B702

    CPC分类号： G11B7/1362 ,  G11B7/0901 ,  G11B7/0912 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/0956 ,  G11B7/123 ,  G11B7/1353

    摘要： An optical pickup is equipped with: an enclosure which contains an optical system including a semiconductor laser and an objective lens; a fixed member; and an elastic supporting member which has conductivity and movably supports the enclosure. A plurality of pairs of driving coils are each positioned in the enclosure so as to be symmetrical with respect to an optical axis of a laser beam. The plurality of pairs of driving coils generate magnetic forces with a plurality of magnets or the like, to drive the enclosure in a focusing direction and a tracking direction.

    摘要翻译： 光拾取器配备有：包含包括半导体激光器和物镜的光学系统的外壳; 固定会员 以及具有导电性并可移动地支撑外壳的弹性支撑构件。 多对驱动线圈分别位于外壳中，以相对于激光束的光轴对称。 多对驱动线圈产生具有多个磁体等的磁力，以沿聚焦方向和跟踪方向驱动外壳。

    Lens driving device, an optical pickup including the lens driving device, and a production method for the lens driving device
    6.
    发明授权
    Lens driving device, an optical pickup including the lens driving device, and a production method for the lens driving device 失效
    透镜驱动装置，包括透镜驱动装置的光学拾取器以及用于透镜驱动装置的制造方法

    公开(公告)号：US06665238B2

    公开(公告)日：2003-12-16

    申请号：US09820076

    申请日：2001-03-28

    申请人： Shinichi Ijima ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa ,  Hideyuki Nakanishi

    发明人： Shinichi Ijima ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa ,  Hideyuki Nakanishi

    IPC分类号： G11B700

    CPC分类号： G11B7/0932

    摘要： A lens holding member carrying an objective lens is movable and supported by a fixed member via a plurality of supporting members. Each supporting member includes a bent part in its base portion on the side of the fixed member. The bent part is bent in a first direction (focusing direction) and a second direction (tracking direction) that are perpendicular to each another. Each supporting member is shaped so as to make all the principal planes of the supporting member parallel to the second direction. The fixed member includes a concave, which is impregnated with a gel material so that the bent part is covered with the gel material.

    摘要翻译： 携带物镜的透镜保持构件可通过多个支撑构件由固定构件移动并支撑。 每个支撑构件在其固定构件侧的基部中包括弯曲部分。 弯曲部分在彼此垂直的第一方向（聚焦方向）和第二方向（跟踪方向）上弯曲。 每个支撑构件被成形为使得支撑构件的所有主平面平行于第二方向。 固定构件包括凹部，其被凝胶材料浸渍，使得弯曲部分被凝胶材料覆盖。

    Method for manufacturing an optical pickup
    8.
    发明授权
    Method for manufacturing an optical pickup 失效

    公开(公告)号：US07014798B2

    公开(公告)日：2006-03-21

    申请号：US10403941

    申请日：2003-03-31

    申请人： Shinichi Ijima ,  Teruki Ishido ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa

    发明人： Shinichi Ijima ,  Teruki Ishido ,  Kazuhiko Yamanaka ,  Kazutoshi Onozawa

    IPC分类号： B29D11/00

    CPC分类号： G11B7/22 ,  B29C45/0053 ,  B29C45/14467 ,  G11B7/0932

    摘要： To provide a manufacturing method for an optical pickup in which a movable member carrying an objective lens is supported by a fixed member through a pair of elastic support member groups, which are each made up of a plurality of parallel elastic support members, so as to be movable in focusing and tracking directions. In a suspension unit forming step, two holding members are formed from a synthetic resin by insert molding at different positions of each elastic support member group in a lengthwise direction of the elastic support members, thereby forming a pair of suspension units. In a connecting step, the pair of suspension units are opposed with an arrangement direction of the elastic support members being substantially the same as the focusing direction, and one holding member of each suspension unit is connected to the movable member and the other holding member to the fixed member.

    Optical Pickup Apparatus
    10.
    发明申请
    Optical Pickup Apparatus 审中-公开
    光学拾取装置

    公开(公告)号：US20080159113A1

    公开(公告)日：2008-07-03

    申请号：US11884207

    申请日：2005-12-13

    申请人： Masahiko Nishimoto ,  Yasuyuki Kochi ,  Shinichi Ijima ,  Takuya Okuda ,  Masayuki Ono

    发明人： Masahiko Nishimoto ,  Yasuyuki Kochi ,  Shinichi Ijima ,  Takuya Okuda ,  Masayuki Ono

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/123

    摘要： An optical pickup apparatus including three semiconductor laser devices which emit laser beams of different wavelengths, a beam splitter, a collimator lens, a hologram device, two light receiving devices, a diffraction grating-hologram device, an integrated substrate, a light detection/source unit and diffraction gratings, whereby the three semiconductor laser devices share the beam splitter and the collimator lens.

    摘要翻译： 一种光拾取装置，包括发射不同波长的激光束的三个半导体激光装置，分束器，准直透镜，全息装置，两个光接收装置，衍射光栅 - 全息图装置，集成基板，光检测/源 单元和衍射光栅，由此三个半导体激光器件共享分束器和准直透镜。