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    Disk tilting compensation with an offset signal to control the location of a light beam
    1.
    发明授权
    Disk tilting compensation with an offset signal to control the location of a light beam 有权

    公开(公告)号：US06363039B1

    公开(公告)日：2002-03-26

    申请号：US09427825

    申请日：1999-10-27

    申请人： Hideki Hayashi ,  Yasuo Fujikawa ,  Shin-ichi Kadowaki ,  Ryusuke Horibe

    发明人： Hideki Hayashi ,  Yasuo Fujikawa ,  Shin-ichi Kadowaki ,  Ryusuke Horibe

    IPC分类号： G11B700

    摘要： An optical information recording and playback apparatus for recording and playing back an optical information recording medium having a transparent protective layer comprises a tilt detection device and an off-track adding device, and includes means for determining an optimum direction in which the center of a light spot is to be displaced from the centerline of an information track on the optical information recording medium to compensate for the tilting of the optical information recording medium relative to the light beam, means for setting the amount of displacement as fixed values, and means for splitting the optical information recording medium into a number of areas and for activating a tilt detection function each time switching is made from one area to another during recording or playback. In this way, by scanning the light spot on the optical information recording medium with the center of the light spot displaced from the centerline of the information track on the optical information recording medium, the degradation of recording/playback signal quality due to the tilting of the recording surface of the optical information recording medium can be reduced.

    Optical pickup head and information recording/reproducing device
    2.
    再颁专利
    Optical pickup head and information recording/reproducing device 有权
    光拾取头和信息记录/再现装置

    公开(公告)号：USRE43126E1

    公开(公告)日：2012-01-24

    申请号：US11529689

    申请日：2006-09-28

    申请人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

    发明人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

    IPC分类号： G11G7/00

    CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

    摘要： An optical pickup head is provided with a light source, a diffracting means for creating a plurality of diffracted beams, a converging means for focusing the diffracted beams onto an optical storage medium, a beam branching means for branching the plurality of beams reflected by the optical storage medium, and an optical detecting means for outputting a signal corresponding to the amount of light of the received beams. The optical detecting means has main beam light receiving portions and sub-beam light receiving portions. The amount of light of the first or higher order diffracted beams when they are substantially focused on and reflected by a focus plane of the plurality of information recording planes is equal to or greater than the amount of light of the zero order diffracted beam when it is reflected without focusing by a non-focus plane other then the focus plane of the plurality of information recording planes. The invention provides an optical pickup head where offset is not generated in the TE signals even during tracking with the objective lens when a two-layered disk is used.

    摘要翻译： 光拾取头设置有光源，用于产生多个衍射光束的衍射装置，用于将衍射光束聚焦到光存储介质上的会聚装置，用于将由光学器件反射的多个光束分支的光束分支装置 存储介质，以及光检测装置，用于输出对应于接收光束的光量的信号。 光检测装置具有主光束光接收部分和副光束光接收部分。 当它们基本上聚焦在多个信息记录面的聚焦平面上并被其反射时，第一或更高阶衍射光束的光量等于或大于零级衍射光束的光量 反射而不聚焦在多个信息记录平面的焦点平面之外的非聚焦平面。 本发明提供了一种光拾取头，即使在使用双层盘的情况下在物镜进行跟踪期间，也不会在TE信号中产生偏移。

    Optical pickup head and information recording/reproducing device
    3.
    发明授权
    Optical pickup head and information recording/reproducing device 有权
    光拾取头和信息记录/再现装置

    公开(公告)号：US06798723B2

    公开(公告)日：2004-09-28

    申请号：US10163443

    申请日：2002-06-04

    申请人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

    发明人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

    IPC分类号： G11B700

    CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

    摘要： An optical pickup head is provided with a light source, a diffracting means for creating a plurality of diffracted beams, a converging means for focusing the diffracted beams onto an optical storage medium, a beam branching means for branching the plurality of beams reflected by the optical storage medium, and an optical detecting means for outputting a signal corresponding to the amount of light of the received beams. The optical detecting means has main beam light receiving portions and sub-beam light receiving portions. The amount of light of the first or higher order diffracted beams when they are substantially focused on and reflected by a focus plane of the plurality of information recording planes is equal to or greater than the amount of light of the zero order diffracted beam when it is reflected without focusing by a non-focus plane other then the focus plane of the plurality of information recording planes. The invention provides an optical pickup head where offset is not generated in the TE signals even during tracking with the objective lens when a two-layered disk is used.

    摘要翻译： 光拾取头设置有光源，用于产生多个衍射光束的衍射装置，用于将衍射光束聚焦到光存储介质上的会聚装置，用于将由光学器件反射的多个光束分支的光束分支装置 存储介质，以及光检测装置，用于输出对应于接收光束的光量的信号。 光检测装置具有主光束光接收部分和副光束光接收部分。 当它们基本上聚焦在多个信息记录面的聚焦平面上并被其反射时，第一或更高阶衍射光束的光量等于或大于零级衍射光束的光量 反射而不聚焦在多个信息记录平面的焦点平面之外的非聚焦平面。 本发明提供了一种光拾取头，即使在使用双层盘的情况下在物镜进行跟踪期间，也不会在TE信号中产生偏移。

    Optical pick-up head with semiconductor laser
    4.
    发明授权
    Optical pick-up head with semiconductor laser 有权
    带半导体激光器的光学拾音头

    公开(公告)号：US06731585B2

    公开(公告)日：2004-05-04

    申请号：US09794439

    申请日：2001-02-27

    申请人： Shin-ichi Kadowaki ,  Hideki Hayashi

    发明人： Shin-ichi Kadowaki ,  Hideki Hayashi

    IPC分类号： G11B390

    CPC分类号： G11B7/126 ,  G11B7/0916 ,  G11B7/094 ,  G11B7/123 ,  G11B7/1353

    摘要： An optical pick-up head of the present invention includes a semiconductor substrate, a semiconductor laser mounted on the semiconductor substrate, a first photodetector for receiving a laser beam emitted from the semiconductor laser and reflected from an optical storage medium and outputting a current signal in accordance with the light amount of the received laser beam, and a current-voltage conversion circuit for converting the current signal to a voltage signal. The semiconductor laser is supplied with a high-frequency signal for preventing an output from fluctuating due to the laser beam reflected from the optical storage medium, and the photodetector and the current-voltage conversion circuit are formed on the semiconductor substrate.

    摘要翻译： 本发明的光拾取头包括半导体衬底，安装在半导体衬底上的半导体激光器，第一光电检测器，用于接收从半导体激光器发射并从光存储介质反射的激光束并输出电流信号 根据接收到的激光束的光量，以及用于将电流信号转换为电压信号的电流 - 电压转换电路。 半导体激光器被提供有高频信号，用于防止由于从光存储介质反射的激光束而产生的输出波动，并且在半导体衬底上形成光电检测器和电流 - 电压转换电路。

    Optical element, light source apparatus, optical head apparatus, and optical information processing apparatus
    5.
    发明授权
    Optical element, light source apparatus, optical head apparatus, and optical information processing apparatus 失效
    光学元件，光源装置，光学头装置和光学信息处理装置

    公开(公告)号：US06643245B2

    公开(公告)日：2003-11-04

    申请号：US09892583

    申请日：2001-06-27

    申请人： Hiroaki Yamamoto ,  Hideki Hayashi ,  Shin-ichi Kadowaki

    发明人： Hiroaki Yamamoto ,  Hideki Hayashi ,  Shin-ichi Kadowaki

    IPC分类号： G11B700

    CPC分类号： G11B7/1365 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B2007/0006

    摘要： A first semiconductor laser emits a light beam L1 with a first wavelength polarized in an x-axis direction. A second semiconductor laser emits a light beam L2 with a second wavelength polarized in the x-axis direction. A wavelength plate functions as a (2m+1)&lgr;/2 plate (m is an integer) with respect to the light beam L1, and functions as a n&lgr; plate (n is an integer) with respect to the light beam L2. A polarization anisotropic hologram element diffracts the light polarized in the x-axis direction, and transmits the light polarized in the y-axis direction. Consequently, an apparent emission point of diffracted light L2′ may be allowed to coincide with an emission point of the light beam L1. A light source apparatus thus constructed can emit two light beams with different wavelengths at a low cost and a high efficiency with optical axes aligned in a simple configuration.

    摘要翻译： 第一半导体激光器发射具有沿x轴方向偏振的第一波长的光束L1。 第二半导体激光器发射具有在x轴方向上偏振的第二波长的光束L2。 波长板相对于光束L1作为（2m + 1）λ/ 2板（m为整数）起作用，并且相对于光束L2起到n1板（n为整数）的作用。 偏振各向异性全息元件衍射沿x轴方向偏振的光，并透射沿y轴方向偏振的光。 因此，可以使衍射光L2'的表观发射点与光束L1的发射点一致。 这样构成的光源装置可以以简单的结构以低成本和高效率发射具有不同波长的两个光束。

    SURFACE ILLUMINATOR AND LIQUID CRYSTAL DISPLAY USING SAME
    8.
    发明申请
    SURFACE ILLUMINATOR AND LIQUID CRYSTAL DISPLAY USING SAME 有权
    表面照明器和使用相同的液晶显示器

    公开(公告)号：US20090303417A1

    公开(公告)日：2009-12-10

    申请号：US12093487

    申请日：2006-11-15

    申请人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

    发明人： Tetsuro Mizushima ,  Ken'ichi Kasazumi ,  Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Shin-ichi Kadowaki ,  Tatsuo Itoh

    IPC分类号： F21V8/00 ,  G02F1/13357

    CPC分类号： G02B5/02 ,  G02B3/0056 ,  G02B6/0028 ,  G02B6/0066 ,  G02B19/0028 ,  G02B19/0057 ,  G02B26/105 ,  G02B27/1053 ,  G02B27/1086 ,  G02B27/144 ,  G02B27/145 ,  G02B27/48 ,  G02F1/133621

    摘要： The present invention provides a surface illuminator having a uniform luminance over a large area by using a laser light source, having a wide color reproduction range, and capable of suppressing a speckle noise, as well as a liquid crystal display using the same. The surface illuminator of the present invention includes the laser light source that emits a laser beam; a beam scan section that deflects and scans the laser beam; and a first plate-shaped light guide that makes the laser beam deflected and scanned by the beam scan section to be incident from an end face portion and making the incident laser beam to emit from a first major surface. Further, the liquid crystal display of the present invention includes a liquid crystal display panel and the surface illuminator, wherein the surface illuminator is used as a backlight illuminator that lights the liquid crystal display panel from backside in this liquid crystal display.

    摘要翻译： 本发明通过使用具有宽的色彩再现范围并且能够抑制散斑噪声的激光源以及使用其的液晶显示器，提供了在大面积上具有均匀亮度的表面照明器。 本发明的表面照明器包括发射激光束的激光光源; 光束扫描部分，其偏转和扫描激光束; 以及第一板状光导，其使由激光束扫描部偏转和扫描的激光束从端面部入射并使入射的激光束从第一主表面发射。 此外，本发明的液晶显示器包括液晶显示面板和表面照明器，其中表面照明器用作从该液晶显示器的背面照亮液晶显示面板的背光照明器。

    Optical Disc Drive
    9.
    发明申请
    Optical Disc Drive 有权
    光盘驱动器

    公开(公告)号：US20090073824A1

    公开(公告)日：2009-03-19

    申请号：US11576482

    申请日：2005-09-20

    申请人： Akira Kurozuka ,  Shin-ichi Kadowaki ,  Joji Anzai ,  Osamu Kajino

    发明人： Akira Kurozuka ,  Shin-ichi Kadowaki ,  Joji Anzai ,  Osamu Kajino

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1275 ,  G11B7/08511 ,  G11B7/1362 ,  G11B7/13925 ,  G11B19/12 ,  G11B2007/0006 ,  G11B2007/0013

    摘要： An optical disk apparatus according to the present invention includes: a light emission section for emitting laser light; an optical system for irradiating the optical disk medium with the laser light; and an aberration control section for controlling aberration of the laser light. In one embodiment, the aberration control section repeatedly switches between a plurality of aberration setting states in a focus lock-in operation. In another embodiment, the aberration control section simultaneously sets a plurality of aberration setting states in a focus lock-in operation. As a result, a plurality of aberration setting states can be allowed to substantially coexist within a single optical system.

    摘要翻译： 根据本发明的光盘装置包括：发光部分，用于发射激光; 用于用激光照射光盘介质的光学系统; 以及用于控制激光的像差的像差控制部。 在一个实施例中，像差控制部分在聚焦锁定操作中在多个像差设置状态之间重复地切换。 在另一实施例中，像差控制部分在聚焦锁定操作中同时设置多个像差设置状态。 结果，可以允许多个像差设定状态在单个光学系统内基本共存。

    OPTICAL HEAD DEVICE AND OPTICAL INFORMATION PROCESSING DEVICE
    10.
    发明申请
    OPTICAL HEAD DEVICE AND OPTICAL INFORMATION PROCESSING DEVICE 有权
    光头设备和光信息处理设备

    公开(公告)号：US20090028035A1

    公开(公告)日：2009-01-29

    申请号：US11912469

    申请日：2006-04-24

    申请人： Kousei Sano ,  Yoshiaki Komma ,  Shin-ichi Kadowaki

    发明人： Kousei Sano ,  Yoshiaki Komma ,  Shin-ichi Kadowaki

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1381 ,  G11B7/0903 ,  G11B7/1353 ,  G11B2007/0013

    摘要： An optical head device according to the present invention includes a splitting section for splitting a light beam having been reflected from an optical storage medium. The splitting section includes: a first main region transmitting a first interfering portion; a second interfering portion transmitting a second main region; and first and second sub-regions through which the first interfering portion is transmitted with a lower rate than in the first main region and through which the second interfering portion is transmitted with a lower rate than in the second main region. The splitting section splits the reflected light beam into: a first main light beam transmitted through the first main region; a second main light beam transmitted through the second main region; a first sub-light beam transmitted through the first sub-region; and a second sub-light beam transmitted through the second sub-region. The splitting section further includes a swapping section for swapping a portion of the first sub-light beam with a portion of the second sub-light beam.

    摘要翻译： 根据本发明的光学头装置包括用于分离已经从光学存储介质反射的光束的分离部分。 分割部分包括：传送第一干扰部分的第一主区域; 传送第二主区域的第二干扰部分; 第一和第二子区域以比在第一主区域中低的速率传输第一干扰部分，并且第二干扰部分以比在第二主要区域中更低的速率透过。 所述分割部将所述反射光束分割为：透过所述第一主区域的第一主光束; 透过第二​​主区域的第二主光束; 透射通过第一子区域的第一子光束; 和通过第二子区域传输的第二副光束。 分割部还包括用于将第一子光束的一部分与第二子光束的一部分交换的交换部分。