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    • 4. 发明授权
    • Objective lens driving device with multipole magnet
    • 具有多极磁体的物镜驱动装置
    • US4792935A
    • 1988-12-20
    • US945089
    • 1986-12-22
    • Kenjiro KimeShigekazu SakabeAkira HashimotoToshiya Matozaki
    • Kenjiro KimeShigekazu SakabeAkira HashimotoToshiya Matozaki
    • G11B7/09H02K41/035G11B7/00
    • G11B7/093H02K41/0354H02K2201/18
    • An objective lens driving device with a multipole magnet which includes a cylindrical yoke with an E-shaped cross section for defining an annular gap between the central yoke section and the outer cyclindrical yoke section; four rectangular tracking coils attached to the side of a focusing coil such that a pair of vertical coil sides of each tracking coil are parallel to a supporting shaft; and a pair of circular multipole magnets disposed within the gap between the central and outer cylindrical yoke sections and each having at least three magnet sections, with opposite end magnet sections having a polarity opposite to that of the central magnet section so that the vertical coil sides interlink with magnetic fluxes having opposite directions to each other, whereby tracking forces act upon the vertical coil sides in the same direction.
    • 一种具有多极磁体的物镜驱动装置,其包括具有E形横截面的圆柱形磁轭,用于限定中心磁轭部分和外旋转磁轭部分之间的环形间隙; 四个矩形跟踪线圈附接到聚焦线圈的侧面,使得每个跟踪线圈的一对垂直线圈侧平行于支撑轴; 以及一对圆形多极磁体,其设置在中央和外部圆柱形磁轭部分之间的间隙内,并且每个具有至少三个磁体部分,相对的端部磁体部分具有与中心磁体部分的极性相反的极性,使得垂直线圈侧 与彼此具有相反方向的磁通相互连接,由此跟踪力沿相同方向作用在垂直线圈侧。
    • 7. 发明授权
    • Optical-system driving device effecting switchover between objective lenses for achieving focal spots
    • 光学系统驱动装置实现物镜之间的切换以实现焦点
    • US08171506B2
    • 2012-05-01
    • US11989584
    • 2006-06-05
    • Keiji NakamuraMitoru YabeNobuo TakeshitaToshiya Matozaki
    • Keiji NakamuraMitoru YabeNobuo TakeshitaToshiya Matozaki
    • G11B7/00
    • G11B7/1374G11B7/0932G11B7/0933G11B7/0935G11B2007/0006
    • 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.
    • 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。
    • 8. 发明申请
    • Optical-system driving device
    • 光学系统驱动装置
    • US20100162282A1
    • 2010-06-24
    • US11989584
    • 2006-06-05
    • Keiji NakamuraMitoru YabeNobuo TakeshitaToshiya Matozaki
    • Keiji NakamuraMitoru YabeNobuo TakeshitaToshiya Matozaki
    • G11B7/00G11B7/135
    • G11B7/1374G11B7/0932G11B7/0933G11B7/0935G11B2007/0006
    • 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.
    • 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。
    • 9. 发明授权
    • Optical head device and optical disc device
    • 光头设备和光盘设备
    • US08891342B2
    • 2014-11-18
    • US14362865
    • 2012-10-11
    • Hironori NakaharaToshiya MatozakiNobuo Takeshita
    • Hironori NakaharaToshiya MatozakiNobuo Takeshita
    • G11B7/00G11B7/13G11B7/09G11B7/1353
    • G11B7/1353G11B7/0901G11B2007/0013
    • An optical component, a hologram, and a photodetector are configured in an optical head device of an optical disc device such that a +1-order beam or a −1-order beam of diffracted light generated from light reflected from an information track in the intended information recording layer strikes the interior of the light-receiving surfaces of the tracking error detection light-receiving sections, a +1-order beam or a −1-order beam of diffracted light generated from light reflected from an information track in an information recording layer one layer deeper than the intended information recording layer strikes outside the light-receiving sections, and a +1-order beam or a −1-order beam of diffracted light that is generated from light reflected from an information track in an information recording layer one layer shallower than the intended information recording layer strikes outside the light-receiving sections.
    • 光学元件,全息图和光电检测器被配置在光盘装置的光学头装置中,使得从在光盘装置中的信息轨道反射的光产生的+ 1级光束或-1级衍射光束 目标信息记录层撞击跟踪误差检测光接收部分的光接收表面的内部,从信息中的信息轨迹反射的光产生的+ 1级光束或-1级衍射光束 比预期的信息记录层更深一层的记录层撞击光接收部分外部,以及从信息记录中从信息轨道反射的光产生的+1级光束或-1级衍射光束 比预期的信息记录层浅的层1撞击光接收部分。
    • 10. 发明申请
    • OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE
    • 光学拾取装置和光盘装置
    • US20110211429A1
    • 2011-09-01
    • US13034735
    • 2011-02-25
    • Hironori NAKAHARAToshiya MatozakiNobuo Takeshita
    • Hironori NAKAHARAToshiya MatozakiNobuo Takeshita
    • G11B7/125
    • G11B7/1275G11B7/1362G11B7/13922G11B2007/0006
    • An optical pickup device includes a plurality of laser light sources emitting laser beams of different oscillation wavelengths, and a plurality of objective lenses on which the laser beams in the form of diverging beams emitted by the plurality of laser light sources are incident, and which directly focus the laser beams onto a recording surface of an optical disc. A rising mirror reflects a laser beam in the form of a diverging beam emitted by a laser light source of a predetermined oscillation wavelength among the plurality of laser light sources so as to lead the laser beam to one of the plurality of objective lenses, and transmits the laser beam in the form of a diverging beam emitted by the other laser light source. As the rising mirror transmits the laser beam in the form of the diverging beam emitted by said other laser light source, astigmatism is generated so as to correct existing astigmatism of the laser beam emitted by said other laser light source.
    • 光拾取装置包括发射不同振荡波长的激光束的多个激光光源和由多个激光光源发射的发散光束形式的激光束入射的多个物镜,并且直接 将激光束聚焦到光盘的记录表面上。 上升反射镜反射出由多个激光源中的预定振荡波长的激光源发射的发散光束的形式的激光束,以将激光束引导到多个物镜中的一个,并传输 由另一激光光源发射的发散光束形式的激光束。 随着上升反射镜以由所述其它激光光源发射的发散光束的形式传输激光束,产生散光,以校正由所述其它激光光源发射的激光束的现有像散。