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111 条记录 (耗时 0.041 秒)

    GRATING ELEMENT, OPTICAL PICKUP OPTICAL SYSTEM AND METHOD OF DESIGNING GRATING ELEMENT
    31.
    发明申请
    GRATING ELEMENT, OPTICAL PICKUP OPTICAL SYSTEM AND METHOD OF DESIGNING GRATING ELEMENT 审中-公开
    光学元件，光学拾取光学系统和设计元件的方法

    公开(公告)号：US20110085432A1

    公开(公告)日：2011-04-14

    申请号：US12995761

    申请日：2009-10-29

    申请人： Mitsuhiro Miyauchi ,  Takako Shiba ,  Takeshi Shimano

    发明人： Mitsuhiro Miyauchi ,  Takako Shiba ,  Takeshi Shimano

    IPC分类号： G11B7/135 ,  G02B5/18 ,  B32B37/02

    CPC分类号： G11B7/1275 ,  G11B7/0903 ,  G11B7/1353 ,  G11B2007/0006 ,  Y10T156/10

    摘要： A grating element is provided with diffraction members wherein protrusions and recesses are periodically arranged, respectively, on one surface of each of transparent substrates. The diffraction members are laminated in the substantially perpendicular direction to the transparent substrates, the protrusions of the diffraction members are made of a dielectric multilayer film, and the dielectric multilayer film has dielectric films of two or more types laminated in the substantially perpendicular direction on the transparent substrates. The wavelengths of laser beams diffracted at predetermined diffraction efficiencies by the diffraction members are different from one another.

    摘要翻译： 光栅元件设置有衍射构件，其中突出部和凹部分别周期地布置在每个透明基板的一个表面上。 衍射构件在与透明基板大致垂直的方向上层叠，衍射构件的突起由电介质多层膜制成，并且电介质多层膜具有在基本垂直的方向上层叠的两种或更多种类型的电介质膜 透明基板。 由衍射构件以预定的衍射效率衍射的激光束的波长彼此不同。

    Optical disk apparatus
    33.
    发明授权
    Optical disk apparatus 有权
    光盘装置

    公开(公告)号：US07715287B2

    公开(公告)日：2010-05-11

    申请号：US11746681

    申请日：2007-05-10

    申请人： Takeshi Shimano ,  Harukazu Miyamoto

    发明人： Takeshi Shimano ,  Harukazu Miyamoto

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1362 ,  G11B7/1356 ,  G11B7/1365

    摘要： Provided is an optical disc apparatus including an interference-type optical disk signal detection system, which allows an optical path difference between two kinds of light to be controlled easily, which has a high signal amplification effect, and which is suitable for miniaturization of an optical system. An interference-type optical system is integrally formed to stabilize an optical path difference between signal light and reference light. At the same time, means for controlling an optical path length of the reference light is attached to a reference mirror, and thereby controls signal amplitude so as to be constantly set the maximum in response to a change in the optical path length with time due to a variation in the thickness of a cover layer of an optical disk, a temperature and the like. Moreover, the optical system is miniaturized by using a Twyman-Green type interference optical system.

    摘要翻译： 提供了一种包括干涉型光盘信号检测系统的光盘装置，其能够容易地控制两种光之间的光路差异，其具有高的信号放大效应，并且适合于光学的小型化 系统。 整体形成干涉型光学系统，以稳定信号光与参考光之间的光程差。 同时，用于控制参考光的光程长度的装置附加到参考反射镜，从而控制信号幅度，以便随着时间的流逝随时间的变化而恒定地设定最大值 光盘的覆盖层的厚度的变化，温度等。 此外，通过使用Twyman-Green型干涉光学系统，光学系统被小型化。

    OPTICAL DISC APPARATUS THEREFOR
    34.
    发明申请
    OPTICAL DISC APPARATUS THEREFOR 有权
    其光盘设备

    公开(公告)号：US20090303847A1

    公开(公告)日：2009-12-10

    申请号：US12473752

    申请日：2009-05-28

    申请人： Yoshinori Ishikawa ,  Takeshi Shimano ,  Akio Fukushima

    发明人： Yoshinori Ishikawa ,  Takeshi Shimano ,  Akio Fukushima

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13925 ,  G11B7/08511 ,  G11B7/0945 ,  G11B7/24038 ,  G11B2007/0013

    摘要： There is a need to accurately lock focus of a laser beam onto a target data layer of a multilayer optical disc. The above need can be addressed by, for example, performing a focus lock operation after a spherical aberration correction amount is set in such a way as to make smaller the ratio of the focus error signal waveform amplitude at the data layer adjacent to a target data layer through which a laser beam passes earlier than through the target data layer to the focus error signal waveform amplitude at the target data layer than that when the spherical aberration correction amount is set so as to be optimal for the target data layer.

    摘要翻译： 需要将激光束的焦点准确地锁定到多层光盘的目标数据层上。 可以通过例如在设置球面像差校正量之后进行聚焦锁定操作来解决上述需要，以便使得与目标数据相邻的数据层处的聚焦误差信号波形幅度的比例变小 激光束比通过目标数据层更早地传递到目标数据层的聚焦误差信号波形振幅的层，而不是对于目标数据层设置为最佳的球面像差校正量。

    Optical recording and reading equipment
    35.
    发明申请
    Optical recording and reading equipment 审中-公开
    光学录音设备

    公开(公告)号：US20090154326A1

    公开(公告)日：2009-06-18

    申请号：US12379217

    申请日：2009-02-17

    申请人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

    发明人： Koichi Watanabe ,  Takahiro Kurokawa ,  Masahiro Aoki ,  Takeshi Shimano

    IPC分类号： G11B7/00

    CPC分类号： G11B7/127 ,  G11B7/1263 ,  G11B7/128

    摘要： Disclosed herewith is a data recording and reading equipment capable of reducing laser noise easily. At first, a laser beam source that can reduce the laser noise when reading data from a subject optical disk is obtained. A modulator capable of varying laser attenuation with a voltage is disposed so as to precede the laser, thereby the laser noise when reading data from the optical disk can be reduced without lowering the laser power when in writing.

    摘要翻译： 这里公开了能够容易地减少激光噪声的数据记录和读取设备。 首先，获得当从主体光盘读取数据时能够降低激光噪声的激光束源。 能够在激光之前设置能够以电压变化激光衰减的调制器，从而可以在写入时降低激光功率而降低从光盘读取数据时的激光噪声。

    Information recording apparatus, information recording medium and information recording medium
    36.
    发明授权
    Information recording apparatus, information recording medium and information recording medium 失效
    信息记录装置，信息记录介质和信息记录方法

    公开(公告)号：US07542396B2

    公开(公告)日：2009-06-02

    申请号：US11209648

    申请日：2005-08-24

    申请人： Motoyasu Terao ,  Toshimasa Kamisada ,  Shinichi Nakatsuka ,  Takeshi Shimano ,  Hitoshi Ishii ,  Kazuhiro Soga ,  Yoshiaki Ogino

    发明人： Motoyasu Terao ,  Toshimasa Kamisada ,  Shinichi Nakatsuka ,  Takeshi Shimano ,  Hitoshi Ishii ,  Kazuhiro Soga ,  Yoshiaki Ogino

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1367 ,  G11B7/0938 ,  G11B7/127 ,  G11B2007/0009

    摘要： To achieve stable, high capacity, high speed recording. Of two light beams emitted from a light irradiation means, one or two beams are made pass through an optical path changeable member whereof at least one of the thickness and refractive index changes continuously or in two or more steps immediately after emission from the light irradiation means, so that a difference is introduced into the optical path length of the two beams, and the focusing point of one beam is made to vary to coincide with a position in the recording layer used for playback or recording. Another light beam is used for servo. Converging of light during recording or read of a multilayer recording medium is performed with higher precision than in the prior art, so higher density, higher capacity recording/playback can be performed.

    摘要翻译： 要实现稳定，高容量，高速录音。 在从光照射装置发射的两束光束中，使一束或两束光束通过光路可变构件，其中厚度和折射率中的至少一个连续地或者在从光照射装置发射之后立即改变两个或更多个步骤 ，从而在两个光束的光程长度上引入差异，并且使一个光束的聚焦点变化以与用于回放或记录的记录层中的位置一致。 另一光束用于伺服。 以比现有技术更高的精度执行多层记录介质的记录或读取期间的光的会聚，因此可以执行更高密度，更高容量的记录/重放。

    Optical head, optical information storage apparatus, and their fabrication method
    37.
    发明授权
    Optical head, optical information storage apparatus, and their fabrication method 失效
    光头，光信息存储装置及其制造方法

    公开(公告)号：US07457206B2

    公开(公告)日：2008-11-25

    申请号：US11211438

    申请日：2005-08-26

    申请人： Takeshi Shimano ,  Masatoshi Kanamaru ,  Masaya Horino

    发明人： Takeshi Shimano ,  Masatoshi Kanamaru ,  Masaya Horino

    IPC分类号： G11B7/00

    CPC分类号： G11B7/08576 ,  G11B7/123 ,  G11B7/1374

    摘要： In an optical head, if a lens is reduced in size so that it can be integrated with a light source and a photodetector, other optical components as well as the lens must be reduced in size, which would result in greater difficulties in handling for assembly and adjustment purposes. The invention allows large quantities of ultra-small optical heads to be produced accurately and at low cost, the optical heads being easy to adjust and not requiring the handling of minute components for adjustment purposes. A first substrate includes lenses for focusing light on an information storage medium, a second substrate includes detectors and disposed on the surface thereof, and a layer, which is disposed between the first and second substrates, includes prisms and mirrors. The layer also includes cavities in which light sources are disposed. The individual substrates are formed in the form of wafers with the lenses, mirrors, prisms, light sources, and photodetectors disposed thereon.

    摘要翻译： 在光学头中，如果透镜的尺寸减小以使其能够与光源和光电检测器集成，则其它光学部件以及透镜的尺寸必须减小，这将导致更大的装配难度 和调整目的。 本发明允许以低成本准确地，低成本地制造大量的超小型光学头，光学头易于调节，并且不需要处理用于调整目的的微小部件。 第一基板包括用于将光聚焦在信息存储介质上的透镜，第二基板包括检测器并设置在其表面上，并且布置在第一和第二基板之间的层包括棱镜和反射镜。 该层还包括其中设置有光源的空腔。 各个基板以晶片的形式形成，其上设置有透镜，反射镜，棱镜，光源和光电探测器。

    OPTICAL INFORMATION DETECTING METHOD, OPTICAL HEAD, AND OPTICAL DISC APPARATUS
    39.
    发明申请
    OPTICAL INFORMATION DETECTING METHOD, OPTICAL HEAD, AND OPTICAL DISC APPARATUS 有权
    光学信息检测方法，光学头和光盘设备

    公开(公告)号：US20080067321A1

    公开(公告)日：2008-03-20

    申请号：US11852361

    申请日：2007-09-10

    申请人： HARUKAZU MIYAMOTO ,  Hideharu Mikami ,  Takeshi Shimano

    发明人： HARUKAZU MIYAMOTO ,  Hideharu Mikami ,  Takeshi Shimano

    IPC分类号： G02B27/40

    CPC分类号： G11B7/1356 ,  G11B7/005 ,  G11B7/13 ,  G11B2007/0013

    摘要： In multilayer optical discs and high-speed optical discs, the amount of reproduction light per unit time greatly decreases and the reproduction signal quality (S/N) significantly drops due to the low effective reflectivity and the short read time of the medium. These problems are solved by causing reflected signal light from the optical disc and reference light, which is separated from the same light source and introduced into a detector without being shone onto the optical disc, to interference with each other on the detector. Detector outputs having four different interference states are simultaneously obtained, the interference states being displaced at intervals of 90° in terms of the phase relationship between the reference light and the signal. Based on a operation of the four detector outputs, a reproduction signal can be obtained that is stable at all times and amplified with high quality, even when there is an optical path length variation due to disc undulations.

    摘要翻译： 在多层光盘和高速光盘中，由于介质的有效反射率低和读取时间短，每单位时间的再现光量大大降低，再现信号质量（S / N）显着下降。 这些问题通过使来自光盘的反射信号光和从相同光源分离并被引入检测器而不被照射到光盘上的参考光在检测器上彼此干涉来解决。 同时获得具有四种不同干扰状态的检测器输出，以参考光和信号之间的相位关系为90°的间隔移位干涉状态。 基于四个检测器输出的操作，即使当由于盘起伏而导致光程长度变化时，也可以始终获得稳定的高质量放大的再现信号。

    Optical disk apparatus using mechanism for controlling spherical aberration
    40.
    发明授权
    Optical disk apparatus using mechanism for controlling spherical aberration 失效
    使用用于控制球面像差的机构的光盘装置

    公开(公告)号：US07283439B2

    公开(公告)日：2007-10-16

    申请号：US11270613

    申请日：2005-11-10

    申请人： Takeshi Shimano ,  Takeshi Maeda ,  Hirofumi Sukeda

    发明人： Takeshi Shimano ,  Takeshi Maeda ,  Hirofumi Sukeda

    IPC分类号： G11B7/00 ,  G11B7/135

    CPC分类号： G11B7/13927 ,  G11B7/08576 ,  G11B7/09 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/1381 ,  G11B2007/13727

    摘要： In the past there has been a problem that on a detection surface the influence of interference causes a defocusing signal to degrade, narrowing the range in which spherical aberration can be stably detected. Accordingly, a diffraction grating is used to focus the inner and outer sides of luminous flux on separate optical detectors before the optical flux is focused on an optical detector and defocusing signals are independently calculated to find the difference therebetween, thereby providing a spherical aberration signal. This makes it possible to detect spherical aberration signals more stably.

    摘要翻译： 过去存在这样的问题：在检测面上，干扰的影响会导致散焦信号劣化，能够使可以稳定地检测球面像差的范围变窄。 因此，衍射光栅用于在光通量聚焦在光学检测器之前将光通量的内侧和外侧聚焦在单独的光学检测器上，并且独立地计算散焦信号以找到它们之间的差异，从而提供球面像差信号。 这使得可以更稳定地检测球面像差信号。