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：US08004949B2

公开(公告)日：2011-08-23

申请号：US11878406

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：US08004943B2

公开(公告)日：2011-08-23

申请号：US12501845

申请日：2009-07-13

申请人： Nobuo Takeshita ,  Osamu Tsukahara ,  Tomo Kishigami

发明人： Nobuo Takeshita ,  Osamu Tsukahara ,  Tomo Kishigami

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B2007/0013

摘要： A recording method for an optical disc having at least three recording layers (11, 12, 13, 14), in which test recording areas are formed in the odd-numbered recording layers (11, 13) and the even-numbered recording layers (12, 14) in positions that are mutually non-overlapping in the thickness direction of the optical disc, the test recording areas in the odd-numbered recording layers are formed in positions mutually aligned in the thickness direction, and the test recording areas in the even-numbered recording layers are formed in positions mutually aligned in the thickness direction. The time for test recording for determining the optimal recording power can be shortened.

摘要翻译： 一种用于具有至少三个记录层（11,12,13,14）的光盘的记录方法，其中测试记录区域形成在奇数编号记录层（11,13）和偶数记录层（ 12,14）在光盘的厚度方向上彼此不重叠的位置中，奇数编号记录层中的测试记录区域形成在厚度方向上相互排列的位置，并且测试记录区域 偶数编号的记录层形成在厚度方向上相互排列的位置上。 可以缩短用于确定最佳记录功率的测试记录的时间。

公开(公告)号：US08000217B2

公开(公告)日：2011-08-16

申请号：US11978595

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： G11B7/24

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：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：US20080267021A1

公开(公告)日：2008-10-30

申请号：US11797056

申请日：2007-04-30

申请人： Tomo Kishigami ,  Nobuo Takeshita

发明人： Tomo Kishigami ,  Nobuo Takeshita

IPC分类号： G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/1267 ,  G11B2007/0013

摘要： A wide test region is ensured in an optical disk and the number of repeated recording instances is suppressed so that the optical disk is made insusceptible to damage and the test region can effectively be utilized. In an optical disk which includes a plurality of recording layers each having a power adjustment region for performing adjustment of power of a beam emitted while the data is recorded and in which the data can be rewritten in each recording layer, when, in performing the adjustment of power while the data is recorded, a region between a first power adjustment region that is a power adjustment region in a first recording layer and a second power adjustment region that is a power adjustment region in a second recording layer provided at a position that is more apart than that of the first recording layer from a plane from which the light beam enters becomes smaller, along a radial direction of the optical disk, than a predetermined size, a utilized region, in one of the first power adjustment region and the second power adjustment region, which is larger than that in the other is erased.

摘要翻译： 在光盘中确保宽的测试区域，并且抑制重复的记录实例的数量，使得光盘不可被损坏并且可以有效地利用测试区域。 在包括多个记录层的光盘中，每个记录层具有功率调整区域，用于在记录数据时发射的光束的功率调节，并且可以在每个记录层中重写数据，当进行调整时 的数据被记录在作为第一记录层中的功率调节区域的第一功率调整区域和作为第二记录层中的功率调整区域的第二功率调整区域之间的区域，所述第二功率调整区域设置在位于 与来自光束入射的平面的第一记录层相比，沿着光盘的径向相比，比第一功率调节区域和第二功率调整区域中的一个的预定尺寸小的利用区域 大于另一个的功率调整区域被擦除。

公开(公告)号：US20080056098A1

公开(公告)日：2008-03-06

申请号：US11978596

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： G11B7/20

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：US20070263500A1

公开(公告)日：2007-11-15

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： G11B7/00

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.

公开(公告)号：US20070263496A1

公开(公告)日：2007-11-15

申请号：US11878406

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： G11B7/00

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.

公开(公告)号：US07190660B2

公开(公告)日：2007-03-13

申请号：US10259530

申请日：2002-09-30

申请人： Tomo Kishigami ,  Nobuo Takeshita

发明人： Tomo Kishigami ,  Nobuo Takeshita

IPC分类号： G11B7/00

CPC分类号： G11B7/22 ,  G11B7/13

摘要： In an optical pickup device, a flexible substrate (FPC) (2) and an auxiliary board (4) are fixed to an optical unit (5) with screws (11) before fixing an optical detector (1) to the FPC (2). After that, the optical detector (1) is pressed to the FPC (2) by probes (12), to bring lead portions (1a) into contact with conductor portions (2a). The optical detector 1 is singly moved by the probes (12) in that state, to perform position adjustment of the optical detector (1). Since the friction between the optical detector (1) alone and the FPC (2) is small, the position adjustment can be performed with high accuracy. Further, since the lead portions (1a) and the conductor portions (2a) are in contact with each other, it is possible to perform the position adjustment while observing an electrical signal outputted from the optical detector (1) through the FPC (2). Then, after determining the optimal position of the optical detector (1), the lead portions (1a) and the conductor portions (2a) are fixed to each other by soldering. Through such a manufacturing method, it is possible to improve the accuracy of position adjustment of the optical detector relative to the optical unit and improve the reliability of position of the optical detector after the position adjustment.

摘要翻译： 在光拾取装置中，在将光学检测器（1）固定到FPC（2）之前，通过螺钉（11）将柔性基板（FPC）（2）和辅助板（4）固定到光学单元（5） 。 之后，通过探针（12）将光学检测器（1）按压到FPC（2），以使引线部分（1a）与导体部分（2a）接触。 在该状态下，光检测器1被探针（12）单独移动，以进行光检测器（1）的位置调整。 由于单独的光学检测器（1）和FPC（2）之间的摩擦小，因此可以高精度地执行位置调整。 此外，由于引线部分（1a）和导体部分（2a）彼此接触，所以可以通过FPC观察从光学检测器（1）输出的电信号来执行位置调整（ 2）。 然后，在确定了光学检测器（1）的最佳位置之后，引线部分（1a）和导体部分（2a）通过焊接彼此固定。 通过这样的制造方法，能够提高光检测器相对于光学单元的位置调整精度，提高位置调整后的光检测器的位置的可靠性。