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921 条记录 (耗时 0.029 秒)

    Information recording device and information reproducing device
    11.
    发明授权
    Information recording device and information reproducing device 有权
    信息记录装置和信息再现装置

    公开(公告)号：US08588046B2

    公开(公告)日：2013-11-19

    申请号：US12440393

    申请日：2007-08-22

    申请人： Seiji Nishiwaki ,  Kazuo Momoo

    发明人： Seiji Nishiwaki ,  Kazuo Momoo

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1362 ,  G11B7/0065 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/128

    摘要： An information recording/reproducing device includes a radiation light source 1 such as a semiconductor laser, a spatial modulation element 6 that splits laser light 2 emitted from the radiation light source 1 into a large number of diffracted light rays, and an objective lens 7 that converges the large number of diffracted light rays onto different points. The laser light 2 emitted from the radiation light source 1 is split into a large number of diffracted light rays by the spatial modulation element 6, the large number of diffracted light rays are converged onto different points in the photosensitive layer 8b of the information recording medium 8 by the objective lens 7, and information is recorded in the photosensitive layer 8b of the information recording medium 8, using an assembly of these converging points. Accordingly, it is possible to provide an information recording device capable of realizing high-contrast recording in which stray light or diffraction has no influence during signal recording.

    摘要翻译： 信息记录/再现装置包括诸如半导体激光器的辐射光源1，将从辐射光源1发射的激光2分成大量衍射光线的空间调制元件6和物镜7， 将大量的衍射光线会聚到不同的点上。 从辐射光源1发射的激光2被空间调制元件6分成大量的衍射光线，大量的衍射光束会聚在信息记录介质的感光层8b中的不同点上 8，并且使用这些会聚点的组合将信息记录在信息记录介质8的感光层8b中。 因此，可以提供能够实现在信号记录期间杂散光或衍射没有影响的高对比度记录的信息记录装置。

    Reproducing device and optical path length servo control method
    12.
    发明授权
    Reproducing device and optical path length servo control method 失效
    再现装置和光程长度伺服控制方法

    公开(公告)号：US08553516B2

    公开(公告)日：2013-10-08

    申请号：US13233269

    申请日：2011-09-15

    申请人： Takahiro Miura ,  Yojiro Sumi

    发明人： Takahiro Miura ,  Yojiro Sumi

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1362 ,  G11B7/00452 ,  G11B7/0908 ,  G11B7/0938 ,  G11B7/13 ,  G11B7/1359 ,  G11B7/1365 ,  G11B7/1378 ,  G11B2007/0009

    摘要： A reproducing device includes a homodyne detection part that carries out homodyne detection by using reflected light of first light obtained from a recording layer as signal light and using reflected light of second light by a mirror as reference light, a signal reproducing part that obtains a reproduced signal based on the signal light, based on a result of homodyne detection, and a one-axis actuator that drives the mirror. The reproducing device further includes an optical path length servo control part that carries out driving control of the one-axis actuator in such a manner that the optical path length difference between the signal light and the reference light is kept constant, and an offset giving part that gives an offset that reduces or enlarges the amplitude difference of the reproduced signal of marks that are recorded in the recording layer and have sizes different from each other.

    摘要翻译： 一种再现装置，包括：通过使用从记录层获得的第一光的反射光作为信号光并使用由反射镜作为参考光的第二光的反射光进行零差检测的零差检测部，获得再现的信号再现部 基于信号光的信号，基于零差检测的结果，以及驱动反射镜的单轴致动器。 再现装置还包括光路长度伺服控制部分，其以使得信号光和参考光之间的光程长度差保持恒定的方式执行单轴致动器的驱动控制，以及偏移给定部分 其给出了减小或放大记录在记录层中的标记的再现信号的幅度差并具有彼此不同的尺寸的偏移。

    NEAR-FIELD OPTICAL HEAD AND METHOD FOR MANUFACTURING SAME
    14.
    发明申请
    NEAR-FIELD OPTICAL HEAD AND METHOD FOR MANUFACTURING SAME 失效
    近场光学头及其制造方法

    公开(公告)号：US20130114389A1

    公开(公告)日：2013-05-09

    申请号：US13658468

    申请日：2012-10-23

    申请人： Kenji KATO ,  Takashi NIWA ,  Susumu ICHIHARA ,  Norio CHIBA ,  Manabu OUMI ,  Nobuyuki KASAMA ,  Yasuyuki MITSUOKA

    发明人： Kenji KATO ,  Takashi NIWA ,  Susumu ICHIHARA ,  Norio CHIBA ,  Manabu OUMI ,  Nobuyuki KASAMA ,  Yasuyuki MITSUOKA

    IPC分类号： G11B7/125

    CPC分类号： G11B7/125 ,  G01Q80/00 ,  G02B6/4214 ,  G11B7/122 ,  G11B7/124 ,  G11B7/1362 ,  G11B7/1387 ,  G11B7/22 ,  G11B2007/13727

    摘要： A near-field optical head which can be manufactured using a silicon process and illuminate and detect sufficient light from a very small aperture at all times in a state of stably proximate to a media.The near-field optical head (3000) is structured by a very small aperture (3008) formed at an apex of a taper, a light introducing part (3002) for propagating light in a direction generally parallel with a media, and a light reflection layer (3001) for reflecting the light propagated through the light introducing part (3002) toward the very small aperture (3008). Furthermore, a focusing function is structurally provided for illuminating the light focused on the very small aperture (3008).

    摘要翻译： 一种近场光学头，其可以使用硅工艺制造，并且在稳定地靠近介质的状态下始终照射和检测来自非常小的孔的足够的光。 近场光学头（3000）由形成在锥形顶点处的非常小的孔（3008）构成，用于在大致平行于介质的方向上传播光的光引入部（3002），以及光反射 层（3001），用于将通过光导入部（3002）传播的光朝向非常小的孔（3008）反射。 此外，在结构上提供了用于照亮聚焦在非常小的孔（3008）上的光的聚焦功能。

    Optical disc drive having a mechanism to reduce the noise level of a focus error signal
    18.
    发明授权
    Optical disc drive having a mechanism to reduce the noise level of a focus error signal 有权
    具有降低聚焦误差信号的噪声水平的机构的光盘驱动器

    公开(公告)号：US08264922B2

    公开(公告)日：2012-09-11

    申请号：US11696910

    申请日：2007-04-05

    申请人： Shuichi Takeuchi

    发明人： Shuichi Takeuchi

    IPC分类号： G11B7/00 ,  G11B7/125

    CPC分类号： G11B7/0909 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1381

    摘要： There is provided an optical disc drive, which includes a light source emitting a light beam, a beam dividing element that divides the light beam into main and sub-beams, an objective lens, an astigmatism producing unit that gives astigmatism to the main and sub-beams, a signal generation unit that has sensors for the beams and generates a focus error signal based on output signals of the sensors; and an optical element that has a function of adjusting intensity distribution of the main beam such that the main beam incident on the optical disc has a predetermined intensity distribution where a maximum intensity level is positioned at a predetermined height within a range of 70% of a pupil diameter, the predetermined height is not equal to an optical axis, and an intensity of the main beam decreases gradually from the predetermined height to a peripheral portion of the pupil.

    摘要翻译： 提供了一种光盘驱动器，其包括发射光束的光源，将光束分割成主光束和子光束的光束分割元件，物镜，散光产生单元，其对主像素和子像素进行散光 波束，信号生成单元，其具有用于所述波束的传感器，并且基于所述传感器的输出信号产生聚焦误差信号; 以及光学元件，其具有调整主光束的强度分布的功能，使得入射在光盘上的主光束具有预定的强度分布，其中最大强度水平位于预定高度的70％的范围内 瞳孔直径，预定高度不等于光轴，并且主光束的强度从预定高度逐渐减小到瞳孔的周边部分。

    OPTICAL PICKUP HEAD
    19.
    发明申请
    OPTICAL PICKUP HEAD 有权
    光学拾取头

    公开(公告)号：US20120213051A1

    公开(公告)日：2012-08-23

    申请号：US13360182

    申请日：2012-01-27

    申请人： Yi CHIU ,  Hsi-Fu Shih ,  Chen-An Lin

    发明人： Yi CHIU ,  Hsi-Fu Shih ,  Chen-An Lin

    IPC分类号： G11B7/12 ,  G11B7/1374 ,  G11B7/1353

    CPC分类号： G11B7/1362 ,  G11B7/123 ,  G11B7/1353

    摘要： An optical pickup head is provided, which includes a silicon substrate, in which an aperture and an objective lens are disposed on the silicon substrate; and a laser diode (LD), a 135-degree tilted reflector, and a 135-degree tilted holographic reflector are disposed on the silicon substrate. The two 135-degree tilted reflectors and a holographic optical element (HOE) are fabricated on a slant face structure of an optical platform using a semiconductor process, so all the elements are disposed at a straight zone, and then in combination with bonding of the LD and an optical sensor element, an miniaturization objective is achieved and an optical path is shortened.

    摘要翻译： 提供一种光拾取头，其包括硅衬底，其中孔和物镜设置在硅衬底上; 并且在硅衬底上设置激光二极管（LD），135度倾斜反射器和135度倾斜全息反射器。 使用半导体工艺在两个135度倾斜反射器和全息光学元件（HOE）上制造在光学平台的倾斜面结构上，因此所有元件都设置在直线区域，然后与 LD和光学传感器元件，实现了小型化的目的，缩短了光路。

    OPTICAL PICKUP DEVICE AND OPTICAL PICKUP SUPPORTING DEVICE
    20.
    发明申请
    OPTICAL PICKUP DEVICE AND OPTICAL PICKUP SUPPORTING DEVICE 失效
    光学拾取器件和光学拾取器支持器件

    公开(公告)号：US20120201116A1

    公开(公告)日：2012-08-09

    申请号：US13501417

    申请日：2011-06-14

    申请人： Yasufumi Yamagishi

    发明人： Yasufumi Yamagishi

    IPC分类号： G11B7/1374

    CPC分类号： G11B7/12 ,  B60L3/0046 ,  B60L11/1874 ,  B60L11/1875 ,  F28F3/02 ,  F28F3/12 ,  F28F2275/08 ,  G11B7/123 ,  G11B7/1362 ,  G11B2007/0006 ,  H01M10/02 ,  H01M10/0481 ,  H01M10/0525 ,  H01M10/0565 ,  H01M10/345 ,  H01M10/613 ,  H01M10/615 ,  H01M10/625 ,  H01M10/6551 ,  H01M10/656 ,  Y02E60/122 ,  Y02E60/124 ,  Y02P70/54 ,  Y02T10/7005 ,  Y02T10/705

    摘要： In order to achieve further cost reduction while the package size of an optical pickup having two objective lenses and the restriction on the disposition of the two objective lenses are maintained, an optical system for laser light emitted from a red/infrared dual-wavelength laser diode is disposed such that a parallel plate beam splitter is disposed to be inclined with respect to the optical axis of focused light of the laser light reflected by an optical disk and the optical axis of the laser light between a rising mirror and the parallel plate beam splitter is inclined from the signal track direction of the optical disk. The laser light to which astigmatism is given by transmission through the parallel plate beam splitter is caused to be directly incident on a light detector without passing through an astigmatism adjustment optical element.

    摘要翻译： 为了实现进一步的成本降低，同时保持具有两个物镜的光学拾取器的封装尺寸和对两个物镜的布置的限制，用于从红/双红外双波长激光二极管发射的激光的光学系统 被布置成使得平行板分束器被设置成相对于由光盘反射的激光的聚焦光的光轴倾斜并且激光的光轴在上升反射镜和平行板分束器之间 从光盘的信号轨道方向倾斜。 使通过平行板分束器的透射赋予散光的激光直接入射到光检测器上，而不通过散光调节光学元件。