公开(公告)号：US4792935A

公开(公告)日：1988-12-20

申请号：US945089

申请日：1986-12-22

申请人： Kenjiro Kime ,  Shigekazu Sakabe ,  Akira Hashimoto ,  Toshiya Matozaki

发明人： Kenjiro Kime ,  Shigekazu Sakabe ,  Akira Hashimoto ,  Toshiya Matozaki

IPC分类号： G11B7/09 ,  H02K41/035 ,  G11B7/00

CPC分类号： G11B7/093 ,  H02K41/0354 ,  H02K2201/18

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5434834A

公开(公告)日：1995-07-18

申请号：US321876

申请日：1994-10-14

申请人： Masahisa Shinoda ,  Kenjiro Kime ,  Toshiya Matozaki ,  Keiji Nakamura ,  Toru Yoshihara ,  Takeshi Ito

发明人： Masahisa Shinoda ,  Kenjiro Kime ,  Toshiya Matozaki ,  Keiji Nakamura ,  Toru Yoshihara ,  Takeshi Ito

IPC分类号： G11B7/09

CPC分类号： G11B7/0938 ,  G11B7/0904 ,  G11B7/094

摘要： An optical recording and reproducing apparatus uses a laser to form one or more spots on an information recording medium preformatted with wobbling guide grooves, and detects tracking error. If the differential push-pull method of detecting tracking error is used, a center spot is flanked by satellite spots distant by an odd multiple of half the repeating period of tile wobble. If the three-beam method is used, the distance is an odd multiple of one-fourth the repeating period of the wobble. If the push-pull method is used, a split photodetector generates a pair of electrical signals. The sum and difference of these signals are filtered, then synchronously detected, and the result is combined with the difference signal to generate a corrected tracking error signal.

摘要翻译： 光学记录和再现装置使用激光器在预先格定有摆动引导槽的信息记录介质上形成一个或多个点，并且检测跟踪误差。 如果使用检测跟踪误差的差分推挽方法，则中心点位于远离瓦片摆动的重复周期的一半的奇数倍的卫星点。 如果使用三光束方式，距离是摆动重复周期的四分之一的奇数倍。 如果使用推挽方法，则分离光电检测器产生一对电信号。 这些信号的和差被滤波，然后同步检测，结果与差分信号相结合，产生校正的跟踪误差信号。

公开(公告)号：US5383169A

公开(公告)日：1995-01-17

申请号：US196463

申请日：1994-02-15

申请人： Masahisa Shinoda ,  Kenjiro Kime ,  Toshiya Matozaki ,  Keiji Nakamura ,  Toru Yoshihara ,  Takeshi Ito

发明人： Masahisa Shinoda ,  Kenjiro Kime ,  Toshiya Matozaki ,  Keiji Nakamura ,  Toru Yoshihara ,  Takeshi Ito

IPC分类号： G11B7/09

CPC分类号： G11B7/0938 ,  G11B7/0904 ,  G11B7/094

摘要： An optical recording and reproducing apparatus uses a laser to form one or more spots on an information recording medium preformatted with wobbling guide grooves, and detects tracking error. If the differential push-pull method of detecting tracking error is used, a center spot is flanked by satellite spots distant by an odd multiple of half time repeating period of tile wobble. If tile three-beam method is used, the distance is an odd multiple of one-fourth the repeating period of the wobble. If the push-pull method is used, a split photodetector generates a pair of electrical signals. The sum and difference of these signals are filtered, then synchronously detected, and the result is combined with the difference signal to generate a corrected tracking error signal.

摘要翻译： 光学记录和再现装置使用激光器在预先格定有摆动引导槽的信息记录介质上形成一个或多个点，并且检测跟踪误差。 如果使用检测跟踪误差的差分推挽方法，则中心点位于远离瓦片摆动的半个时间重复周期的奇数倍的卫星点。 如果采用瓦片三波束法，距离是摆动重复周期的四分之一的奇数倍。 如果使用推挽方法，则分离光电检测器产生一对电信号。 这些信号的和差被滤波，然后同步检测，结果与差分信号相结合，产生校正的跟踪误差信号。

公开(公告)号：US5303216A

公开(公告)日：1994-04-12

申请号：US935925

申请日：1992-08-27

申请人： Masahisa Shinoda ,  Kenjiro Kime ,  Toshiya Matozaki ,  Keiji Nakamura ,  Toru Yoshihara ,  Takeshi Ito

发明人： Masahisa Shinoda ,  Kenjiro Kime ,  Toshiya Matozaki ,  Keiji Nakamura ,  Toru Yoshihara ,  Takeshi Ito

IPC分类号： G11B7/09

CPC分类号： G11B7/0938 ,  G11B7/0904 ,  G11B7/094

摘要： An optical recording and reproducing apparatus uses a laser to form one or more spots on an information recording medium preformatted with wobbling guide grooves, and detects tracking error. If the differential push-pull method of detecting tracking error is used, a center spot is flanked by satellite spots distant by an odd multiple of half the repeating period of the wobble. If the three-beam method is used, the distance is an odd multiple of one-fourth the repeating period of the wobble. If the push-pull method is used, a split photodetector generates a pair of electrical signals. The sum and difference of these signals are filtered, then synchronously detected, and the result is combined with the difference signal to generate a corrected tracking error signal.

摘要翻译： 光学记录和再现装置使用激光器在预先格定有摆动引导槽的信息记录介质上形成一个或多个点，并且检测跟踪误差。 如果使用检测跟踪误差的差分推挽方法，则中心点位于远离摆动重复周期的一半的奇数倍的卫星点。 如果使用三光束方式，距离是摆动重复周期的四分之一的奇数倍。 如果使用推挽方法，则分离光电检测器产生一对电信号。 这些信号的和差被滤波，然后同步检测，结果与差分信号相结合，产生校正的跟踪误差信号。

公开(公告)号：US08891342B2

公开(公告)日：2014-11-18

申请号：US14362865

申请日：2012-10-11

申请人： Hironori Nakahara ,  Toshiya Matozaki ,  Nobuo Takeshita

发明人： Hironori Nakahara ,  Toshiya Matozaki ,  Nobuo Takeshita

IPC分类号： G11B7/00 ,  G11B7/13 ,  G11B7/09 ,  G11B7/1353

CPC分类号： G11B7/1353 ,  G11B7/0901 ,  G11B2007/0013

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20110211429A1

公开(公告)日：2011-09-01

申请号：US13034735

申请日：2011-02-25

申请人： Hironori NAKAHARA ,  Toshiya Matozaki ,  Nobuo Takeshita

发明人： Hironori NAKAHARA ,  Toshiya Matozaki ,  Nobuo Takeshita

IPC分类号： G11B7/125

CPC分类号： G11B7/1275 ,  G11B7/1362 ,  G11B7/13922 ,  G11B2007/0006

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07554675B2

公开(公告)日：2009-06-30

申请号：US10548838

申请日：2003-11-17

申请人： Nobuo Takeshita ,  Teruo Fujita ,  Toshiya Matozaki ,  Michihiro Tadokoro

发明人： Nobuo Takeshita ,  Teruo Fujita ,  Toshiya Matozaki ,  Michihiro Tadokoro

IPC分类号： G01B9/02

CPC分类号： G11B7/22 ,  G01J9/02 ,  G11B7/1359 ,  G11B7/1367 ,  G11B7/1376 ,  G11B7/1381 ,  G11B7/1392 ,  G11B7/13927

摘要： A light wavefront measuring apparatus (2, 2a, 42) includes a separating element (7a, 47a) for separating a flux of light which exits from an optical head (1, 31) into a first beam and a second beam, a first interference fringe display section (21, 21a) for displaying interference fringes formed from the first beam, a Dove prism (13, 53) for rotating a wavefront of the second beam around its optical axis (AX2), and a second interference fringe display section (22, 22a) for displaying interference fringes formed from the second beam which passed through it. In adjustment of the light source device, position of a collimator (5) in the optical head (1, 31) is adjusted in optical axis direction so as to approximate the interference fringe patterns displayed in the interference fringe display sections (21, 22, 21a, 22a) each other.

摘要翻译： 光波前测量装置（2,2a，42）包括分离元件（7a，47a），用于将从光头（1,31）射出的光束分离成第一光束和第二光束，第一干涉 用于显示由第一光束形成的干涉条纹的边缘显示部分（21,21a），用于旋转围绕其光轴（AX2）的第二光束的波前的Dove棱镜（13,53）和第二干涉条纹显示部分 22,22a），用于显示由通过它的第二光束形成的干涉条纹。 在光源装置的调整中，在光头（1,31）中的准直仪（5）的位置在光轴方向上调整为近似于在干涉条纹显示部（21,22）中显示的干涉条纹图案， 21a，22a）。

公开(公告)号：US20130279319A1

公开(公告)日：2013-10-24

申请号：US13978486

申请日：2011-12-05

申请人： Toshiya Matozaki ,  Hironori Nakahara ,  Nobuo Takeshita

发明人： Toshiya Matozaki ,  Hironori Nakahara ,  Nobuo Takeshita

IPC分类号： G11B7/1374

CPC分类号： G11B7/1374 ,  G11B7/08 ,  G11B7/0935 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/135 ,  G11B7/1356 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0006

摘要： An optical pickup device moves in a feed direction parallel to a radial direction of an optical disc rotating on an axis of rotation, and records or reproduces information on an information recording surface of the optical disc. The optical pickup device has a first light source that emits light of a first wavelength, a second light source that emits light of a second wavelength differing from the first wavelength, a first objective lens for focusing the light from the first light source onto the information recording surface, and a second objective lens for focusing the light from the second light source onto the information recording surface. The first and second objective lenses and the first light source are disposed in a plane that passes through the axis of rotation and is parallel to the feed direction.

摘要翻译： 光拾取装置沿与旋转轴线旋转的光盘的径向平行的进给方向移动，并将信息记录在光盘的信息记录面上。 光拾取装置具有发射第一波长的光的第一光源，发射与第一波长不同的第二波长的光的第二光源，用于将来自第一光源的光聚焦到信息上的第一物镜 记录表面和用于将来自第二光源的光聚焦到信息记录表面上的第二物镜。 第一和第二物镜和第一光源设置在穿过旋转轴线并平行于进给方向的平面中。

公开(公告)号：US20110271291A1

公开(公告)日：2011-11-03

申请号：US13142403

申请日：2010-02-04

申请人： Hironori Nakahara ,  Yoshihiro Kiyose ,  Toshiya Matozaki ,  Nobuo Takeshita

发明人： Hironori Nakahara ,  Yoshihiro Kiyose ,  Toshiya Matozaki ,  Nobuo Takeshita

IPC分类号： G11B17/04

CPC分类号： G11B19/128

摘要： An optical disc device compatible with optical discs of different types having different track pitches, having a light detecting means (104) disposed in the path of diffracted light from the recording tracks on the optical disc (101), on which a light beam from a light emitting section (103) is incident. During the loading of the optical disc, the optical disc device discriminates the type of optical disc from the detection output of the light detecting means (104) and the positional relation between the optical disc (101) and the light detecting means (104). A simple structure thus enables the optical disc type to be discriminated.

摘要翻译： 一种与具有不同轨道间距的不同类型的光盘兼容的光盘装置，具有设置在来自光盘（101）上的记录轨道的衍射光的路径中的光检测装置（104），光检测装置 发光部（103）入射。 在光盘装入期间，光盘装置鉴别光检测装置（104）的检测输出和光盘（101）与光检测装置（104）之间的位置关系。 因此，简单的结构使得能够区分光盘类型。

公开(公告)号：US20100110866A1

公开(公告)日：2010-05-06

申请号：US12596075

申请日：2008-03-31

申请人： Nobuo Takeshita ,  Toshiya Matozaki

发明人： Nobuo Takeshita ,  Toshiya Matozaki

IPC分类号： G11B7/135

CPC分类号： G11B7/1267

摘要： In a method of setting a quantity of light directed onto an optical disc for reproduction purposes, an area of the optical disc in which information has been recorded is reproduced with a test-reproducing light quantity (S14, S24), a reproduction time or number of reproductions up to the time when the reproduced signal quality value reaches a prescribed value is determined (S20, S30), and the quantity of reproducing light used in regular reproduction is set by performing calculations with the determined value (S32). The state in which recorded marks have significantly degraded can also be detected, and degradation of the recorded marks to the unreproducible state can be avoided.

摘要翻译： 在为了再现目的而设置指向光盘的光量的方法中，以测试再现光量（S14，S24），再现时间或数字再现记录有信息的光盘的区域 确定再现信号质量值达到规定值时的再现次数（S20，S30），通过利用确定值进行计算来设定常规重放中使用的再现光量（S32）。 也可以检测记录标记显着劣化的状态，并且可以避免记录标记的劣化到不可再生状态。