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公开(公告)号：US20050063259A1
公开(公告)日：2005-03-24
申请号：US10879080
申请日：2004-06-30
CPC分类号： G11B7/13925 , G11B7/0033 , G11B7/0917 , G11B7/0945 , G11B2007/0013
摘要： A rewritable optical disk apparatus, optical information recording and reproducing apparatus or the like is allowed to automatically and properly adjust the optical system to the optimum focal condition regardless of the readout signal detector's positional error and the residual aberration in the optical system. The spherical aberration and defocus are coarsely adjusted using the amplitude (PP amplitude) of the tracking error signal and then finely adjusted using the amplitude (RF amplitude) of the readout signal. Since the spherical aberration can properly be adjusted, it is possible to raise the reliability of the readout signal.
摘要翻译： 不管读出信号检测器的位置误差和光学系统中的残余像差如何，允许可重写光盘装置，光学信息记录和再现装置等将光学系统自动且适当地调整到最佳焦点状态。 使用跟踪误差信号的振幅（PP振幅）粗略调整球面像差和散焦，然后使用读出信号的振幅（RF幅度）进行微调。 由于可以适当地调节球面像差，所以可以提高读出信号的可靠性。
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22.发明授权
公开(公告)号：US5555334A
公开(公告)日：1996-09-10
申请号：US319940
申请日：1994-10-07
申请人： Kunikazu Ohnishi , Masayuki Inoue , Yoshio Suzuki , Yukio Fukui
发明人： Kunikazu Ohnishi , Masayuki Inoue , Yoshio Suzuki , Yukio Fukui
CPC分类号： H04B10/40 , G02B6/4246 , G02B6/2804 , G02B6/4234
摘要： A bidirectional optical transmission and receiving module of a simplified structure and an optical communication system using the same. The optical transmission and receiving module includes a light emitting device and a light receiving device disposed with in a same package having an opening covered with a cover glass sheet, and a holographic diffraction grating provided on a top or lower surface of the glass sheet. In transmitting operation, a light beam emitted from the light emitting device passes through the diffraction grating to be concentrated onto an end face of an optical fiber by a lens. In receiving operation, a received light beam emanated from the end face of the optical fiber reaches the diffraction grating via the lens to be thereby diffracted. A plus-sign primary diffracted light beam resulting from the diffraction is concentrated onto a light detecting surface of the light receiving device. Signal as transmitted through the optical fiber in the form of signal light can thus be received.
摘要翻译： 一种简化结构的双向光传输和接收模块以及使用其的光通信系统。 光传输和接收模块包括发光器件和光接收器件，其设置在具有覆盖玻璃片的开口的相同封装中，以及设置在玻璃板的顶表面或下表面上的全息衍射光栅。 在发射操作中，从发光器件发射的光束通过衍射光栅，通过透镜被集中在光纤的端面上。 在接收操作中，从光纤的端面发出的接收光束经由透镜到达衍射光栅，从而衍射。 由衍射产生的正符号主衍射光束集中在光接收装置的光检测表面上。 因此可以接收以信号光的形式透过光纤的信号。
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23.发明授权Optical disc with phase pits and a reproducing apparatus for data recorded on the optical disc 失效具有相位凹坑的光盘和用于记录在光盘上的数据的再现装置
公开(公告)号：US5541909A
公开(公告)日：1996-07-30
申请号：US137969
申请日：1993-10-19
申请人： Junji Nakajima , Kunikazu Ohnishi , Tooru Sasaki , Makoto Miyamoto , Masaaki Kurebayashi , Yoshio Suzuki , Masayuki Inoue , Hisamitsu Tanaka , Motoyuki Suzuki , Yukio Fukui
发明人： Junji Nakajima , Kunikazu Ohnishi , Tooru Sasaki , Makoto Miyamoto , Masaaki Kurebayashi , Yoshio Suzuki , Masayuki Inoue , Hisamitsu Tanaka , Motoyuki Suzuki , Yukio Fukui
CPC分类号： G11B7/24 , G11B7/0051 , G11B7/0903 , G11B7/0909 , G11B7/0941 , G11B7/1365 , G11B7/1398 , G11B7/0945 , G11B7/24085 , G11B7/243
摘要： A masking type light control layer for decreasing its reflection factor in a high-temperature region is formed on phase pits of an optical disc, and the phase pit depth is set to a predetermined value. A light spot for reproduction is shaped to an elliptical form and two sub-flux beams on the optical disc are spaced by 5/4 track pitch from a principal flux beam in the radial direction of the optical disc. The kind of optical disc is discriminated and reproduction laser power and characteristics of an equalizer circuit are switched in accordance with the type of an optical disc. Through this, a stable servo signal detection can be ensured and repetitive reproduction characteristics can be improved.
摘要翻译： 在光盘的相位凹坑上形成用于降低高温区域的反射系数的掩模型光控制层，将相位深度设定为规定值。 用于再现的光斑被成形为椭圆形，并且光盘上的两个子光束在光盘的径向方向上从主通量束间隔开+ E，fra 5/4 + EE轨道间距。 根据光盘的类型，鉴别出光盘的种类和再现激光功率和均衡器电路的特性。 由此，能够确保稳定的伺服信号检测，能够提高重复再生特性。
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24.发明授权Optical recording/reproducing apparatus with light beam deflection means including wedge-shaped prism 失效具有光束偏转装置的光记录/再现装置包括楔形棱镜
公开(公告)号：US5278813A
公开(公告)日：1994-01-11
申请号：US878974
申请日：1992-05-06
申请人： Kunikazu Ohnishi , Tohru Sasaki , Masayuki Inoue , Michio Miura , Akira Saito , Kazuo Shigematsu
发明人： Kunikazu Ohnishi , Tohru Sasaki , Masayuki Inoue , Michio Miura , Akira Saito , Kazuo Shigematsu
CPC分类号： G11B7/1359 , G11B7/094
摘要： An optical recording/reproducing apparatus includes a plurality of semiconductor lasers, an objective lens for focusing light beams from the semiconductor lasers on an optical disk to form a plurality of light spots, and a correction unit for reducing an offset in a tracking signal occurring concomitantly with relative position correction for the light spots. The correction unit includes a rotary wedge-shaped prism disposed in an optical path through which a laser beam incident on the optical disk and a reflection laser beam from a light spot on the disk pass in opposite directions. The shape, refractive index and initial installation angle of the wedge-shaped prism are designed to have predetermined values that cancel the position shift of the laser beam on the objective lens surface occurring concomitantly with deflection of the laser beam.
摘要翻译： 一种光学记录/再现装置，包括多个半导体激光器，用于将来自半导体激光器的光束聚焦在光盘上以形成多个光点的物镜，以及用于减少伴随发生的跟踪信号中的偏移的校正单元 对于光点进行相对位置校正。 校正单元包括设置在光路中的旋转楔形棱镜，通过该光路入射到光盘上的激光束和来自光盘上的光点的反射激光束通过相反方向。 楔形棱镜的形状，折射率和初始安装角度被设计成具有预定值，其消除与激光束的偏转同时发生的物镜表面上的激光束的位置偏移。
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25.发明申请公开(公告)号：US20120300602A1
公开(公告)日：2012-11-29
申请号：US13478199
申请日：2012-05-23
申请人： Kunikazu OHNISHI
发明人： Kunikazu OHNISHI
IPC分类号： G11B7/09
CPC分类号： G11B7/0903 , G11B7/0906 , G11B7/0938 , G11B7/2405 , G11B2007/0013
摘要： An optical information device used with a grooveless multilayer disc including multiple recording layers used to record and reproduce information signals and a guide layer dedicated to detect tracking error signals (TES) can always stably detect the TESs when the distance between the recording layer and guide layer varies due to selection of a target recording layer. For example, a plurality of light spots for detecting the TESs are formed by a holographic grating on the guide layer, but are defocused with respect to each other. The TESs are detected individually from the respective light spots. The TESs are subjected to an addition operation to be a signal for tracking control, thereby extraordinary increasing the defocus dynamic range of the TESs.
摘要翻译： 与包括用于记录和再现信息信号的多个记录层的无槽多层盘一起使用的光学信息装置和专用于检测跟踪误差信号（TES）的引导层可以在记录层和引导层之间的距离时始终稳定地检测TES 由于目标记录层的选择而变化。 例如，用于检测TES的多个光点由引导层上的全息光栅形成，但彼此散焦。 从相应的光点分别检测TES。 将TES作为追加控制的信号进行加法运算，从而非常增加TES的散焦动态范围。
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26.发明申请OPTICAL INFORMATION DEVICE AND INTERLAYER MOVEMENT METHOD IN OPTICAL INFORMATION DEVICE 审中-公开光信息设备中的光信息设备和中间层移动方法公开(公告)号：US20120127846A1
公开(公告)日：2012-05-24
申请号：US13293304
申请日：2011-11-10
申请人： Kunikazu Ohnishi
发明人： Kunikazu Ohnishi
IPC分类号： G11B7/1374
CPC分类号： G11B7/08511 , G11B7/13925 , G11B2007/0006
摘要： Provided is a method of, in movement between recording layers of an optical disc, resolving a problem caused by an increase in spherical aberration change as a result of widening of a layer interval at which the movement is made and executing appropriate interlayer movement. An upper limit value is defined for a recording layer interval at which the interlayer movement can be made, and if a layer interval from a moving-source layer to a moving-target layer is equal to or larger than the upper limit value, the interlayer movement and spherical aberration correction are once carried out where a predetermined recording layer for which a layer interval is less than the upper limit value is defined as a temporary shelter layer, and the processing is repeated with this temporary shelter layer defined as a new moving-source recording layer to thereby realize favorable interlayer movement to the target layer.
摘要翻译： 提供了一种在光盘的记录层之间移动的方法，其解决了作为移动的层间间隔的加宽和执行适当的层间移动而导致的球面像差变化的增加所引起的问题。 对于可以进行层间移动的记录层间隔定义上限值，并且如果从移动源层到移动目标层的层间隔等于或大于上限值，则中间层 一旦执行层间隔小于上限值的预定记录层被定义为临时遮蔽层，并且将该临时遮蔽层重新定义为新的移动 - 源记录层，从而实现对目标层的有利的层间移动。
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公开(公告)号：US08149678B2
公开(公告)日：2012-04-03
申请号：US12417037
申请日：2009-04-02
申请人： Kunikazu Ohnishi
发明人： Kunikazu Ohnishi
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B2007/0013
摘要： Undesired disturbance components leak eventually into various detection signals and reproduction signals as stray optical beams reflected from recording layers other than a reproduction layer overlap with signal beams on a light reception surface of an optical detector and interference occurs between them when an optical disc having multi-layered recording layers is reproduced. A diffraction grating having a specific grating groove pattern is arranged immediately ahead of an optical detector or in a return optical path. Such optical unit averages the disturbance components resulting from interference between a signal beam and a stray beam and can satisfactorily improve influences of leak.
摘要翻译： 不期望的干扰分量最终会泄漏到各种检测信号和再现信号中，因为从再生层以外的记录层反射的杂散光束与光学检测器的光接收表面上的信号光束重叠，并且当具有多个光盘的光盘时， 复制分层记录层。 具有特定格栅凹槽图案的衍射光栅布置在光学检测器的正前方或者在返回光路中。 这样的光学单元平均化由信号光束和杂散光束之间的干涉导致的干扰分量，并且可以令人满意地改善泄漏的影响。
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公开(公告)号：US08081550B2
公开(公告)日：2011-12-20
申请号：US12608121
申请日：2009-10-29
CPC分类号： G11B7/0917 , G11B7/0916 , G11B2007/0013
摘要： In a multilayer disc has an increased number of recording layers) spaced by spacing from each other, a generation interval between focus error (FE) signals detected from the respective recording layers becomes small. This causes mutual interference between the FE signals and a resulting undesired offset and the like in the signals, leading to a significantly deteriorated quality of the FE signals. To avoid this, in an optical pickup device according to the present invention, detection surfaces are newly added at positions adjacent to the FE signal detection surfaces, a predetermined detection signal obtained from the newly-added detection surfaces is multiplied by a predetermined coefficient value depending on the spacing between the recording layers, and the multiplied signal is subtracted from the original FE signal. As a result, mutual interference between the FE signals can be remarkably reduced.
摘要翻译： 在多层盘中具有增加数量的记录层），间隔彼此间隔，从各个记录层检测到的聚焦误差（FE）信号之间的产生间隔变小。 这导致FE信号之间的相互干扰和信号中产生的不期望的偏移等，导致FE信号的质量显着劣化。 为了避免这种情况，在根据本发明的光学拾取装置中，在与FE信号检测表面相邻的位置处新添加检测表面，将从新添加的检测表面获得的预定检测信号乘以预定系数值取决于 在记录层之间的间隔上，并且从原始FE信号中减去相乘的信号。 结果，可以显着地减少FE信号之间的相互干扰。
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29.发明授权Photodetector, diffraction grating, optical pickup and optical disc apparatus 有权光电检测器，衍射光栅，光学拾取器和光盘装置公开(公告)号：US07936658B2
公开(公告)日：2011-05-03
申请号：US12709613
申请日：2010-02-22
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/1275 , G11B7/1353 , G11B2007/0006
摘要： The present invention provides a photodetector capable of generating highly accurate tracking and focusing error signals free of variations in light quantity caused by interference, in an optical pickup with a two-wavelength multilaser. The photodetector comprises first three light receiving areas arranged linearly to receive three light beams respectively resulting from splitting of a light beam emitted from a laser light source of a first wavelength and second three light receiving areas arranged linearly to receive three light beams respectively resulting from splitting of a light beam emitted from a laser light source of a second wavelength longer than the first wavelength. The distance between both-end light receiving areas out of the first three light receiving areas is longer than the distance between both-end light receiving areas out of the second three light receiving areas.
摘要翻译： 本发明提供了一种能够在具有双波长多光盘的光学拾取器中产生高精度的跟踪和聚焦误差信号的光检测器，该误差信号不受干扰引起的光量的变化。 光电检测器包括前三个光接收区域，线性地布置以接收三个光束，分别由从第一波长的激光光源发射的光束分裂，并且第二三个光线接收区域被线性地分配以接收分别由分裂产生的三个光束 从比第一波长长的第二波长的激光光源发射的光束。 在前三个光接收区域中的两端光接收区域之间的距离比第二三个光接收区域中的两端光接收区域之间的距离长。
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30.发明申请PHOTODETECTOR, DIFFRACTION GRATING, OPTICAL PICKUP AND OPTICAL DISC APPARATUS 有权光电转换器，衍射光栅，光学拾取器和光盘设备公开(公告)号：US20100148045A1
公开(公告)日：2010-06-17
申请号：US12709613
申请日：2010-02-22
IPC分类号： H01L31/0232 , H01L31/09
CPC分类号： G11B7/131 , G11B7/1275 , G11B7/1353 , G11B2007/0006
摘要： The present invention provides a photodetector capable of generating highly accurate tracking and focusing error signals free of variations in light quantity caused by interference, in an optical pickup with a two-wavelength multilaser. The photodetector comprises first three light receiving areas arranged linearly to receive three light beams respectively resulting from splitting of a light beam emitted from a laser light source of a first wavelength and second three light receiving areas arranged linearly to receive three light beams respectively resulting from splitting of a light beam emitted from a laser light source of a second wavelength longer than the first wavelength. The distance between both-end light receiving areas out of the first three light receiving areas is longer than the distance between both-end light receiving areas out of the second three light receiving areas.
摘要翻译： 本发明提供了一种能够在具有双波长多光盘的光学拾取器中产生高精度的跟踪和聚焦误差信号的光检测器，该误差信号不受干扰引起的光量的变化。 光电检测器包括前三个光接收区域，线性地布置以接收三个光束，分别由从第一波长的激光光源发射的光束分裂，并且第二三个光线接收区域被线性地分配以接收分别由分裂产生的三个光束 从比第一波长长的第二波长的激光光源发射的光束。 在前三个光接收区域中的两端光接收区域之间的距离比第二三个光接收区域中的两端光接收区域之间的距离长。
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