公开(公告)号：US20120229926A1

公开(公告)日：2012-09-13

申请号：US13510751

申请日：2010-11-13

申请人： Tatsuki Wade ,  Katsushige Yanagisawa ,  Shinji Minamisawa ,  Tadashi Takeda ,  Kiyoshi Miyazaki ,  Hisahiro Ishihara

发明人： Tatsuki Wade ,  Katsushige Yanagisawa ,  Shinji Minamisawa ,  Tadashi Takeda ,  Kiyoshi Miyazaki ,  Hisahiro Ishihara

IPC分类号： G02B7/04

CPC分类号： G03B5/00 ,  G02B7/04 ,  G02B7/08 ,  G02B27/646

摘要： The lens drive device is equipped with a first supporting body that holds the lens and is movable in the direction of the optical axis, a second supporting body that holds the first supporting body, a fixed body that holds the second supporting body in a manner enabling movement in directions that are roughly orthogonal to the optical axis direction, a first drive mechanism for driving the first supporting body, a second drive mechanism for driving the second supporting body in a first direction, and a third drive mechanism for driving the second supporting body in a second direction. The first supporting body is supported by the second supporting body by means of first supporting members (8, 9), which are formed from an elastic material; and the second supporting body is supported by the fixed body by means of second supporting members, which are formed from an elastic material.

摘要翻译： 透镜驱动装置配备有保持透镜并且可沿光轴方向移动的第一支撑体，保持第一支撑体的第二支撑体，以能够支撑第二支撑体的方式固定第二支撑体的固定体 在大致正交于光轴方向的方向上的移动，用于驱动第一支撑体的第一驱动机构，用于沿第一方向驱动第二支撑体的第二驱动机构，以及用于驱动第二支撑体的第三驱动机构 在第二个方向。 第一支撑体借助于由弹性材料形成的第一支撑构件（8,9）由第二支撑体支撑; 并且第二支撑体通过由弹性材料形成的第二支撑构件被固定体支撑。

公开(公告)号：US5761174A

公开(公告)日：1998-06-02

申请号：US523147

申请日：1995-09-05

申请人： Tadashi Takeda ,  Yoshio Hayashi ,  Ikuo Kasuga ,  Kazuo Higashiura ,  Noriyuki Satoh ,  Hisahiro Ishihara

发明人： Tadashi Takeda ,  Yoshio Hayashi ,  Ikuo Kasuga ,  Kazuo Higashiura ,  Noriyuki Satoh ,  Hisahiro Ishihara

IPC分类号： G11B7/09 ,  G11B7/135

CPC分类号： G11B7/0916 ,  G11B7/0903 ,  G11B7/0908 ,  G11B7/1353 ,  G11B7/1381

摘要： An optical pickup device includes a light source irradiating a record medium with plural light spots of light emitted therefrom, a plurality of light detecting elelments to which reflected light of the light spots are guided, respectively, to adequately synthesize and compare outputs of said light detecting elements, thereby reading information recorded in tracks of the record medium, and detecting an tracking error and a focusing error, and a hologram element which splits light emitted from the light source into plural beams is disposed in an optical path between the light source and the record medium, said hologram element is split by a split line, said split line elongating in a direction perpendicular to a track of the medium on an optical axis, and a hologram pattern having a diffraction function which is substantially directed in the track direction is disposed on at least one side of said split line, thereby differentiating diffraction conditions on both sides of said split line from each other.

摘要翻译： 一种光学拾取装置包括：一个光源，用于照射具有从其发出的光的多个光点的记录介质，分别引导光点的反射光的多个光检测元件，以充分合成并比较所述光检测的输出 从而读取记录在记录介质的轨道中的信息，并且检测跟踪误差和聚焦误差，并且将从光源发射的光分解成多个光束的全息元件设置在光源和光源之间的光路中 记录介质，所述全息元件被分割线分开，所述分割线在垂直于光轴上的介质的轨道的方向上延伸，并且设置具有基本上指向轨道方向的衍射函数的全息图图案 在所述分割线的至少一侧上，从而使所述分割线的两侧的衍射条件有差异 从彼此。