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    Optical disc and optical disc device
    1.
    发明授权
    Optical disc and optical disc device 有权

    公开(公告)号：US10381037B2

    公开(公告)日：2019-08-13

    申请号：US15983568

    申请日：2018-05-18

    申请人： Mitsubishi Electric Corporation

    发明人： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

    IPC分类号： G11B7/00 ,  G11B7/24 ,  G11B7/2403 ,  G11B7/007 ,  G11B7/24041 ,  G11B7/1392 ,  G11B7/13 ,  G11B7/013 ,  G11B7/24038 ,  G11B20/12 ,  G11B7/127 ,  G11B7/135 ,  G11B7/085

    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.

    OPTICAL DISC DEVICE AND SPHERICAL ABERRATION ERROR SIGNAL DETECTION METHOD
    2.
    发明申请
    OPTICAL DISC DEVICE AND SPHERICAL ABERRATION ERROR SIGNAL DETECTION METHOD 有权
    光盘设备和球形异常错误信号检测方法

    公开(公告)号：US20160225400A1

    公开(公告)日：2016-08-04

    申请号：US14974335

    申请日：2015-12-18

    申请人： SONY CORPORATION

    发明人： Tomoya IKUTA ,  Takeshi KUBO ,  Takashi NAKAO ,  Kimihiro SAITO ,  Kenji YAMAMOTO

    IPC分类号： G11B7/1392 ,  G11B7/007 ,  G11B7/09

    CPC分类号： G11B7/13927 ,  G11B7/0037 ,  G11B7/00718 ,  G11B7/08511 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/1353 ,  G11B7/1378 ,  G11B7/1381 ,  G11B7/1395

    摘要： There is provided an optical disc device that performs recording on a land and a groove, including an optical path splitter configured to split a luminous flux returning from an optical disc into first and second optical paths, a first detector configured to receive a whole of the luminous flux that has passed through the first optical path, a second detector configured to receive a luminous flux of an inside part of the luminous flux that has passed through the second optical path, a spherical aberration error signal generation unit configured to generate a spherical aberration error signal on the basis of a difference between a first focus error signal obtained on the basis of a detection signal of the first detector and a second focus error signal obtained on the basis of a detection signal of the second detector, a spherical aberration correction unit, and an adjustment unit.

    摘要翻译： 提供了一种光盘装置，其在陆地和凹槽上执行记录，包括光路分路器，其构造成将从光盘返回的光束分成第一和第二光路;第一检测器，被配置为接收整个 已经通过第一光路的光通量，被配置为接收通过第二光路的光通量的内部的光通量的第二检测器，被配置为产生球面像差的球面像差误差信号生成单元 基于第一检测器的检测信号获得的第一聚焦误差信号与基于第二检测器的检测信号获得的第二聚焦误差信号之间的差异的误差信号，球面像差校正单元 ，和调整单元。

    Polarization conversion element
    3.
    发明授权
    Polarization conversion element 有权
    极化转换元件

    公开(公告)号：US09257141B2

    公开(公告)日：2016-02-09

    申请号：US13581198

    申请日：2011-02-24

    申请人： Nobuyuki Hashimoto ,  Makoto Kurihara ,  Kenji Matsumoto ,  Masafumi Yokoyama ,  Ayano Tanabe

    发明人： Nobuyuki Hashimoto ,  Makoto Kurihara ,  Kenji Matsumoto ,  Masafumi Yokoyama ,  Ayano Tanabe

    IPC分类号： G02F1/1347 ,  G02F1/1343 ,  G02F1/13 ,  G11B7/1392 ,  G02B27/28 ,  G11B7/1369 ,  G02F1/01

    CPC分类号： G11B7/13925 ,  G02B27/286 ,  G02F1/0136 ,  G02F1/134309 ,  G02F1/1347 ,  G02F2203/04 ,  G02F2203/07 ,  G02F2203/50 ,  G11B7/1369

    摘要： A polarization conversion element includes a phase reversal element and a polarization plane rotation element including a liquid crystal layer. The liquid crystal layer has a plurality of regions disposed along circumferential direction with the intersection point of the polarization plane rotation element and the optical axis as the center with alignment directions different from each other. When electric voltage in accordance with the wavelength of linear polarization incident on the polarization plane rotation element is applied, each region rotates the polarization plane of the polarization component transmitted by each region, and thereby converts linear polarization to radial polarization. The phase reversal element reverses, among the first and the second annular portions alternately disposed along the radial direction with the optical axis as the center, the phase of light incident on the first annular portion relative to the phase of light incident on the second annular portion.

    摘要翻译： 偏振转换元件包括相位反转元件和包括液晶层的偏振面旋转元件。 液晶层具有沿着圆周方向设置的多个区域，偏振面旋转元件与光轴的交点为取向方向不同的中心。 当施加根据偏振面旋转元件入射的线偏振波长的电压时，每个区域旋转由每个区域传输的偏振分量的偏振面，从而将线偏振转换成径向偏振。 相反反转元件在以光轴为中心沿着径向方向交替布置的第一和第二环形部分之间相反，相对于入射在第二环形部分上的光的相位入射到第一环形部分上的光的相位 。

    LENS DRIVING DEVICE, INFORMATION RECORDING AND PLAYBACK APPARATUS, AND ELECTRONIC INSTRUMENT
    4.
    发明申请
    LENS DRIVING DEVICE, INFORMATION RECORDING AND PLAYBACK APPARATUS, AND ELECTRONIC INSTRUMENT 审中-公开
    镜头驱动装置，信息记录和回放装置以及电子仪器

    公开(公告)号：US20140086035A1

    公开(公告)日：2014-03-27

    申请号：US13967572

    申请日：2013-08-15

    申请人： KABUSHIKI KAISHA TOSHIBA

    发明人： Yasuaki Hadame ,  Kazuo Watabe

    IPC分类号： G11B7/1392

    CPC分类号： G11B7/13925 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/0935

    摘要： According to one embodiment, a lens driving device includes a fixed member, a movable member, a support part, and a coil. The movable member is configured to retain a lens and a magnet. The supporting part is configured such that a guide member placed substantially in parallel with a lens optical axis supports the movable member at plural positions symmetric with respect to the lens optical axis while the movable member is movable in a direction of the lens optical axis with respect to the fixed member. The coil is configured such that a driving force is generated for the movable member by interaction with the magnet provided in the fixed member.

    摘要翻译： 根据一个实施例，透镜驱动装置包括固定部件，可动部件，支撑部件和线圈。 可动构件被构造成保持透镜和磁体。 支撑部构造成使得基本上与透镜光轴平行放置的引导部件将可动部件支撑在相对于透镜光轴对称的多个位置，同时可移动部件可以在透镜光轴的方向上相对于 到固定成员。 线圈构造成使得通过与设置在固定构件中的磁体相互作用而为可动构件产生驱动力。

    OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE
    5.
    发明申请
    OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 有权
    光学拾取装置和光盘装置

    公开(公告)号：US20130286810A1

    公开(公告)日：2013-10-31

    申请号：US13978160

    申请日：2012-01-17

    申请人： Hironori Nakahara ,  Toshiya Matozaki ,  Nobuo Takeshita

    发明人： Hironori Nakahara ,  Toshiya Matozaki ,  Nobuo Takeshita

    IPC分类号： G11B7/1392

    CPC分类号： G11B7/13927 ,  G11B7/1362 ,  G11B7/1376 ,  G11B2007/0013

    摘要： An optical pickup device includes a laser light source 201, a collimating optical system 202 for converting laser light to parallel light, a focusing optical system 205 for focusing the parallel light onto an optical disc, a light detection unit for receiving returning light returning by reflection of the focused light from the optical disc 101 and outputting a detection signal, and a reflecting mirror 204 disposed between the collimating optical system and the focusing optical system. The reflecting mirror 204 has a reflective surface including three regions having different reflectances. The central region on the reflecting surface meets the other two regions, at positions illuminated by the light focused by the light focusing optical system, in boundary lines that are parallel to a radial direction on the optical disc 101. The reflectance of the central region is lower than the reflectances of the other two regions.

    摘要翻译： 光拾取装置包括激光源201，用于将激光转换为平行光的准直光学系统202，用于将平行光聚焦到光盘上的聚焦光学系统205，用于接收通过反射返回的返回光的光检测单元 来自光盘101的聚焦光并输出检测信号，反射镜204设置在准直光学系统和聚焦光学系统之间。 反射镜204具有包括具有不同反射率的三个区域的反射表面。 反射表面上的中心区域与由光聚焦光学系统聚焦的光照射的位置处在与光盘101上的径向平行的边界线处的另外两个区域相交。中心区域的反射率为 低于其他两个地区的反射率。

    OPTICAL INFORMATION DEVICE AND LOSS-OF-CONTROL DETECTION METHOD
    6.
    发明申请
    OPTICAL INFORMATION DEVICE AND LOSS-OF-CONTROL DETECTION METHOD 审中-公开
    光信息设备和失控控制检测方法

    公开(公告)号：US20130121122A1

    公开(公告)日：2013-05-16

    申请号：US13813278

    申请日：2012-05-29

    申请人： Kenji Kondo ,  Takeharu Yamamoto ,  Kenji Fujiune

    发明人： Kenji Kondo ,  Takeharu Yamamoto ,  Kenji Fujiune

    IPC分类号： G11B7/1392

    CPC分类号： G11B7/13927 ,  G11B7/0946 ,  G11B7/0948 ,  G11B7/1387 ,  G11B7/24038 ,  G11B7/2405

    摘要： Provided is an optical disc device including a focus control unit for performing control so that a convergent point of a main beam converges on a predetermined information layer, a tracking control unit for performing control so that the convergent point of the main beam scans a predetermined track or a predetermined mark sequence on an information layer, a sub beam receiving unit for receiving a sub beam reflected off the information layer and outputting a signal according to an amount of beam received, and a microcomputer for detecting, during a recording operation of recording the information, a focus loss-of-control state where the convergent point of the main beam deviates from the predetermined information layer or a tracking loss-of-control state where the convergent point of the main beam deviates from the predetermined track or the predetermined mark sequence on the information layer.

    摘要翻译： 提供了一种光盘装置，包括：聚焦控制单元，用于执行控制，使得主光束的会聚点会聚在预定信息层上;跟踪控制单元，用于执行控制，使得主光束的会聚点扫描预定轨迹 或信息层上的预定标记序列，子波束接收单元，用于接收从信息层反射的子波束并根据所接收的波束的量输出信号;以及微计算机，用于在记录操作期间检测记录 信息，主波束的收敛点偏离预定信息层的焦点失控状态或主波束的收敛点偏离预定轨迹或预定标记的跟踪失控状态 序列在信息层上。

    Objective lens and optical pickup apparatus
    7.
    发明申请
    Objective lens and optical pickup apparatus 审中-公开
    物镜和光学拾取装置

    公开(公告)号：US20050270958A1

    公开(公告)日：2005-12-08

    申请号：US11109735

    申请日：2005-04-20

    申请人： Kiyono Ikenaka

    发明人： Kiyono Ikenaka

    IPC分类号： G02B3/10 ,  G02B5/18 ,  G02B13/14 ,  G02B13/18 ,  G02B27/00 ,  G11B7/00 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1392

    CPC分类号： G11B7/1353 ,  G02B13/146 ,  G02B27/0037 ,  G02B27/4283 ,  G02B27/4288 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

    摘要： The present invention includes relates to an objective lens used for reproducing and/or recording of information for at least two types of optical discs including high density discs, and has excellent wavelength characteristics, temperature characteristics and tracking characteristics and to provide an optical pickup apparatus employing this objective lens. An objective lens according to the present invention is used for an optical pickup apparatus at least reproducing and/or recording information for a first optical disc having a protective substrate with a thickness t1 and a second optical disc having a protective substrate with a thickness t2 (0.8×t1≦t2). Each of the light fluxes with a wavelength λ1 and a wavelength λ2 enters into the objective lens and a diffractive structure is formed on the at least one optical surface of the objective lens, signs and values of an optical system magnification of the objective lens m1 and m2 for the light fluxes with wavelength λ1 and λ2 respectively are different each other, and the diffractive structure has a positive diffractive action.

    摘要翻译： 本发明涉及用于再现和/或记录包括高密度盘的至少两种类型的光盘的信息的物镜，并且具有优异的波长特性，温度特性和跟踪特性，并且提供一种使用 这个物镜。 根据本发明的物镜用于光学拾取装置，至少再现和/或记录具有厚度为t1的保护衬底的第一光盘和具有厚度为t2的保护衬底的第二光盘的信息（ 0.8xt1 <= t2）。 具有波长λ1和波长λ2的每个光束进入物镜，并且在物镜的至少一个光学表面上形成衍射结构，物镜的光学系统放大率的符号和值以及 波长λ1和λ2的光通量的m2分别相差不大，衍射结构具有正衍射作用。

    Optical pick-up head, optical information apparatus, and optical information reproducing method
    9.
    发明申请
    Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
    光学拾取头，光学信息装置和光学信息再现方法

    公开(公告)号：US20050199778A1

    公开(公告)日：2005-09-15

    申请号：US10646602

    申请日：2003-08-22

    申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

    发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

    IPC分类号： G11B7/09 ,  G11B7/00 ,  G11B7/005 ,  G11B7/085 ,  G11B7/095 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1392 ,  G02B7/04

    CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

    摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

    摘要翻译： 本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。 光记录介质具有基本上以恒定间距布置的轨道。 平均音高是tp。 当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。 跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算 接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号， 当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。