公开(公告)号：US08171506B2

公开(公告)日：2012-05-01

申请号：US11989584

申请日：2006-06-05

申请人： Keiji Nakamura ,  Mitoru Yabe ,  Nobuo Takeshita ,  Toshiya Matozaki

发明人： Keiji Nakamura ,  Mitoru Yabe ,  Nobuo Takeshita ,  Toshiya Matozaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

摘要： An optical-system driving device is achieved that can switch over between objective lenses and is space-saving, lightweight, and simply-configured. An optical-system driving device for recording information onto or playing it back from an optical storage medium, includes a stationary unit having a rotation axis; a movable unit pivotable about the rotation axis; pivotal movement means for pivotally moving the movable unit about the rotation axis; and the movable unit includes a holder having a plurality of optical means that is able to focus a beam of light onto the optical storage medium, and a plurality of conductive elastic members for supporting the holder, wherein an optical axis of each of the plurality of optical means is located substantially equidistant from the rotation axis, and the optical means for focusing the beam of light onto the optical storage medium is selected by pivotally moving the movable unit with the rotation means.

摘要翻译： 实现了能够在物镜之间切换并且节省空间，重量轻且简单配置的光学系统驱动装置。 一种用于将信息记录到光学存储介质上或从光存储介质播放的光学系统驱动装置，包括具有旋转轴的固定单元; 围绕所述旋转轴线枢转的可移动单元; 枢转运动装置，用于围绕旋转轴线可动地移动可移动单元; 并且所述可移动单元包括具有能够将光束聚焦到所述光学存储介质上的多个光学装置的保持器，以及用于支撑所述保持器的多个导电弹性构件，其中，所述多个 光学装置基本上等距离旋转轴线，并且通过用旋转装置枢转地移动可移动单元来选择用于将光束聚焦到光学存储介质上的光学装置。

公开(公告)号：US20100284260A1

公开(公告)日：2010-11-11

申请号：US12744094

申请日：2008-09-01

申请人： Toshiya Matozaki ,  Nobuo Takeshita

发明人： Toshiya Matozaki ,  Nobuo Takeshita

IPC分类号： G11B7/00

CPC分类号： G11B7/0933 ,  G11B7/0932 ,  G11B7/0935 ,  G11B7/0956 ,  G11B7/1374 ,  G11B2007/0006

摘要： An objective lens driving device includes a lens holder (3) holding an objective lens (1, 2), a stationary part (5) that supports the lens holder (3) via wires (7a, 7b), an electromagnetic coil (11a-11d, 12a-12d) provided on the lens holder, and a magnet (4a, 4b) provided on the stationary part and magnetized in a multipolar manner so that different magnetic pole surfaces are arranged on a surface of the magnet facing the electromagnetic coil. The lens holder has a convex portion (16a-16d, 17a-17d) on a surface thereof facing the magnet. The convex portion has at least one groove (601-604, 701-704) portion extending parallel to a direction of magnetic flux lines of the magnet facing the convex portion, and at least a surface of the convex portion is formed of material having magnetic property.

摘要翻译： 一种物镜驱动装置，包括：保持物镜（1,2）的透镜保持架（3），经由导线（7a，7b）支撑透镜保持架（3）的静止部分（5）;电磁线圈 11d，12a-12d）和设置在固定部分上并以多极方式磁化的磁体（4a，4b），使得不同的磁极表面布置在面对电磁线圈的磁体的表面上。 透镜架在其面对磁体的表面上具有凸部（16a-16d，17a-17d）。 凸部具有至少一个平行于面向凸部的磁体的磁通线的方向延伸的凹槽（601-604,701-704），并且凸部的至少一个表面由具有磁性的材料形成 属性。

公开(公告)号：US5687032A

公开(公告)日：1997-11-11

申请号：US592178

申请日：1996-01-26

申请人： Nobuo Takeshita ,  Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane ,  Kenjiro Kime ,  Hideaki Kobachi

发明人： Nobuo Takeshita ,  Teruo Fujita ,  Morihiro Karaki ,  Mitsuru Irie ,  Kazuhiko Nakane ,  Kenjiro Kime ,  Hideaki Kobachi

IPC分类号： G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B7/22 ,  G02B7/02

CPC分类号： G11B7/133 ,  G11B7/00718 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/094 ,  G11B7/0948 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/14 ,  G11B7/22 ,  G11B7/0909

摘要： An optical device inclination angle adjuster for adjusting an optical axis of an optical device. The optical device has an optical axis and a peripheral portion, and is held by a holder. The adjuster includes an annular plate inserted between the optical device and the holder. The annular plate is in alignment with the peripheral portion of the optical device, and has an opening with an axis in alignment with the optical axis of the optical device to permit passage of light through the opening of the annular plate and through the optical device. A first pair of projections are formed between the annular plate and the optical device. The first pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. A second pair of projections are formed between the annular plate and the holder. The second pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. The first pair of projections and the second pair of projections are disposed at different rotary angles about the optical axis; whereby the inclination angle is adjusted by rotating the optical device about the first pair of projections or about the second pair of projections.

摘要翻译： 一种用于调节光学装置的光轴的光学装置倾斜角度调节器。 光学装置具有光轴和周边部分，并由保持器保持。 调节器包括插入在光学装置和保持器之间的环形板。 环形板与光学装置的周边部分对准，并且具有与光学装置的光轴对准的轴线的开口，以允许光通过环形板的开口并通过光学装置。 第一对突起形成在环形板和光学装置之间。 第一对突起相对于光轴彼此沿径向相对设置，并且在平行于光轴的方向上突出。 第二对突起形成在环形板和支架之间。 第二对突起相对于光轴彼此沿径向相对设置，并且沿与光轴平行的方向突出。 第一对突起和第二对突起以围绕光轴的不同旋转角设置; 由此通过围绕第一对突起或围绕第二对突起旋转光学装置来调节倾斜角度。

公开(公告)号：US5864525A

公开(公告)日：1999-01-26

申请号：US877822

申请日：1997-06-18

申请人： Nobuo Takeshita ,  Teruo Fujita

发明人： Nobuo Takeshita ,  Teruo Fujita

IPC分类号： G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B7/22

CPC分类号： G11B7/133 ,  G11B7/00718 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/094 ,  G11B7/0948 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/14 ,  G11B7/22 ,  G11B7/0909

摘要： In an optical disk device for recording or playing back information on or from an optical information recording medium having land parts forming information tracks and groove parts interposed between adjacent land parts, the land part is illuminated with a first light spot, and the groove part is illuminated a second light spot, a first focus error signal is produced in accordance with the reflected light beam of the first light spot, and a second focus error signal is produced in accordance with the reflected light beam of the second light spot, and focus control is performed in accordance with the first and second focus error signals. In another aspect of the invention, each of the light receiving sections of a photodetector used for receiving the reflected light has an array of tapered projections along in a region between main parts the light receiving sections, and the tapered projections of the light receiving sections are interdigitated with each other. Improved devices for tilting the objective lens is also provided.

摘要翻译： 在用于在具有形成信息轨迹的陆地部分和插入在相邻陆部之间的槽部分的光信息记录介质上记录或再现信息的光盘装置中，用第一光点照亮地面部分，并且将槽部分 照亮第二光点，根据第一光点的反射光束产生第一聚焦误差信号，并且根据第二光点的反射光产生第二聚焦误差信号，并且聚焦控制 根据第一和第二聚焦误差信号进行。 在本发明的另一方面，用于接收反射光的光电检测器的每个光接收部分具有沿着光接收部分的主要部分之间的区域中的锥形突起阵列，并且光接收部分的锥形突起是 互相指指。 还提供了用于倾斜物镜的改进的装置。

公开(公告)号：US5068843A

公开(公告)日：1991-11-26

申请号：US546875

申请日：1990-07-02

申请人： Nobuo Takeshita ,  Teruo Fujita

发明人： Nobuo Takeshita ,  Teruo Fujita

IPC分类号： G11B7/09 ,  G11B7/135 ,  G11B7/14

CPC分类号： G11B7/1362 ,  G11B7/0901

摘要： An optical read-write apparatus for reading and writing information in tracks on an optical medium such as an optical disk has two or more beam sources for producing light beams with different wavelengths, and corresponding dichroic mirrors mounted in the path of the beams. Each of the dichroic mirrors reflects light of the wavelength of one of the beams and transmits light of other wavelengths. Piezoelectric transducers are provided for tilting one or more of the dichroic mirrors to adjust the tracking of the beams. An objective lens receives the beams after reflection from the dichroic mirrors and focuses them onto the optical medium.

摘要翻译： 用于在诸如光盘的光学介质上的轨道中读取和写入信息的光学读写装置具有两个或更多个用于产生具有不同波长的光束的光束源，以及安装在光束路径中的对应的二向色镜。 每个分色镜反射其中一个光束的波长的光并透射其他波长的光。 提供压电换能器用于倾斜一个或多个分色镜以调节光束的跟踪。 物镜从二向色镜反射后接收光束并将其聚焦到光学介质上。

公开(公告)号：US5313447A

公开(公告)日：1994-05-17

申请号：US77969

申请日：1993-06-18

申请人： Nobuo Takeshita ,  Kenjiro Kime ,  Teruo Fujita ,  Hiroo Shimegi ,  Kazuo Okada

发明人： Nobuo Takeshita ,  Kenjiro Kime ,  Teruo Fujita ,  Hiroo Shimegi ,  Kazuo Okada

IPC分类号： G11B7/135

CPC分类号： G11B7/1359

摘要： An optical head for recording, reproducing or erasing data by emitting a light beam irradiated from a light source onto a recording medium. To reduce the height of the optical head, an optical axis shifting device is disposed between a light beam emitting device and a condensing device for condensing the light beam onto the recording medium. This optical axis shifting device shifts the first optical axis of the light beam from the light beam emitting device to a second optical axis positioned in parallel and spaced apart from each other. As the optical axis shifting device, there is preferable employed a prism having two reflecting faces lying in parallel, and the optical axis, after shifting is to be positioned downwardly of the position of the optical axis before shifting, thereby reducing the height of the optical head.

摘要翻译： 用于通过将从光源照射的光束发射到记录介质上来记录，再现或擦除数据的光学头。 为了降低光头的高度，光轴移动装置设置在光束发射装置和用于将光束聚集到记录介质上的聚光装置之间。 该光轴移动装置将光束的第一光轴从光束发射装置移动到彼此平行且间隔开的第二光轴。 作为光轴移动装置，优选使用具有平行的两个反射面的棱镜，移动后的光轴位于移动前的光轴的位置的下方，由此降低光学的高度 头。

公开(公告)号：US20120106310A1

公开(公告)日：2012-05-03

申请号：US13380791

申请日：2011-01-17

申请人： Masahisa Shinoda ,  Hironori Nakahara ,  Masayuki Omaki ,  Kenya Nakai ,  Nobuo Takeshita

发明人： Masahisa Shinoda ,  Hironori Nakahara ,  Masayuki Omaki ,  Kenya Nakai ,  Nobuo Takeshita

IPC分类号： G11B7/1353 ,  G11B7/1374

CPC分类号： G11B7/0903 ,  G11B7/094 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/13925 ,  G11B7/1395 ,  G11B2007/0013

摘要： An optical head device mounted in an optical disc device. The optical head device is provided with a diffractive optical element and a photodetector. The diffractive optical element has: a primary diffraction region at a location on which the positive and negative first-order components and some of the zero-order component of a reflectively diffracted light beam are incident; and secondary diffraction regions at locations on which the rest of the zero-order component but none of the positive or negative first-order components of the reflectively diffracted light beam are incident. A main light-receiving section of the photodetector receives the zero-order component of a transmissively diffracted light beam that has passed through the primary diffraction region and the secondary diffraction regions. Secondary light-receiving sections receive the positive first-order component and/or the negative first-order component of the transmissively diffracted light beam that has passed through the secondary diffraction regions.

摘要翻译： 安装在光盘装置中的光学头装置。 光头装置设置有衍射光学元件和光电检测器。 衍射光学元件具有：反射衍射光束的正，负一阶分量和零级分量的一部分入射的位置处的主衍射区域; 以及零反射衍射光束的零级分量的其余部分而不是反射衍射光束的正或负一阶分量的位置处的次级衍射区域。 光检测器的主光接收部接收通过一次衍射区域和二次衍射区域的透射衍射光束的零级分量。 次级光接收部分接收通过次级衍射区域的透射衍射光束的正一级分量和/或负一级分量。

公开(公告)号：US20110317534A1

公开(公告)日：2011-12-29

申请号：US13203799

申请日：2010-04-07

申请人： Tomo Kishigami ,  Koichi Ikuta ,  Nobuo Takeshita ,  Yoshihiro Kiyose ,  Yusuke Kanatake

发明人： Tomo Kishigami ,  Koichi Ikuta ,  Nobuo Takeshita ,  Yoshihiro Kiyose ,  Yusuke Kanatake

IPC分类号： G11B27/36

CPC分类号： G11B7/00736 ,  G11B7/005 ,  G11B7/1267

摘要： According to a method for setting the laser beam power applied to reproduce information recorded on an optical disc, information recorded in a region on the optical disc is reproduced using three or more test reproduction powers (S22B), the number of reproductions until the degradation of the quality of the reproduced signal reaches a prescribed value is determined as the degradation number of reproductions (S22F), the relation between the test reproduction power and the degradation number of reproductions is approximated by a curve, and a reproduction power restricting the degradation of the reproduced signal quality to a predetermined amount or less over a certain guaranteed number of reproductions is determined (S25F). In optical reproduction from an optical disc on which information is recorded, the optimum power of irradiation for reproduction can be set, and degradation of the information due to the reproducing light can be prevented.

摘要翻译： 根据用于设置用于再现记录在光盘上的信息的激光束功率的方法，记录在光盘上的区域中的信息使用三个或更多个测试再现功率（S22B）被再现，直到再现的次数 将再现信号的质量达到规定值确定为再现的劣化次数（S22F），则通过曲线近似测试再现功率和再现的退化次数之间的关系，并且限制了再现的劣化 确定在一定的保证数量的再现的再现信号质量达预定量或更小的值（S25F）。 在从记录有信息的光盘进行光学再现时，可以设置用于再现的照射的最佳功率，并且可以防止由于再现光引起的信息的劣化。

公开(公告)号：US08045441B2

公开(公告)日：2011-10-25

申请号：US11878465

申请日：2007-07-24

申请人： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

发明人： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

IPC分类号： G11B7/20

CPC分类号： G11B27/329 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/0945 ,  G11B7/1275 ,  G11B7/24038 ,  G11B19/122 ,  G11B20/1217 ,  G11B27/105 ,  G11B2007/0006 ,  G11B2007/0013 ,  G11B2220/235

摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US07889613B2

公开(公告)日：2011-02-15

申请号：US11978611

申请日：2007-10-30

申请人： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

发明人： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

IPC分类号： G11B7/00

CPC分类号： G11B27/329 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/0945 ,  G11B7/1275 ,  G11B7/24038 ,  G11B19/122 ,  G11B20/1217 ,  G11B27/105 ,  G11B2007/0006 ,  G11B2007/0013 ,  G11B2220/235

摘要： In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.