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31. 发明申请

US20070097833A1 OPTICAL HEAD UNIT AND OPTICAL DISC APPARATUS 审中-公开
标题翻译：光头单元和光盘设备
公开(公告)号：US20070097833A1
公开(公告)日：2007-05-03
申请号：US11552208
申请日：2006-10-24
申请人： Hideaki OKANO , Katsuo Iwata , Kazuhiro Nagata
发明人： Hideaki OKANO , Katsuo Iwata , Kazuhiro Nagata
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903
摘要： According to one embodiment, an optical head unit of the invention combines preferably and simplifies a diffraction pattern of a diffraction element to guide a reflected laser beam divided into a predetermined number to a photodetector, in order to provide an optical head unit and an optical disc apparatus which provide a stable reproducing signal irrespectively of the standards of recording media, when reproducing information from a recording medium of optional standard. By using the combined and simplified diffraction pattern, the optical head unit easily provides outputs usable to detect first, second and third signals used to detect a tracking error when reproducing information recorded on an optical disc from a reflected laser beam from an optical disc, a fourth signal used to detect a focus error, and a fifth signal used to detect a spherical aberration compensating component.
摘要翻译：根据一个实施例，本发明的光头单元优选地并且简化了衍射元件的衍射图案，以将分成预定数量的反射激光束引导到光电检测器，以便提供光学头单元和光盘当从可选标准的记录介质再现信息时，提供与记录介质的标准无关的稳定再现信号的装置。通过使用组合和简化的衍射图案，光学头单元容易地提供可用于检测用于在从光盘反射的激光束再现记录在光盘上的信息时检测跟踪误差的第一，第二和第三信号的输出，用于检测聚焦误差的第四信号，以及用于检测球面像差补偿分量的第五信号。

32. 发明申请

US20070064573A1 Optical head unit and optical disc apparatus 审中-公开
标题翻译：光头单元和光盘装置
公开(公告)号：US20070064573A1
公开(公告)日：2007-03-22
申请号：US11519996
申请日：2006-09-11
申请人： Kazuhiro Nagata , Katsuo Iwata , Hideaki Okano
发明人： Kazuhiro Nagata , Katsuo Iwata , Hideaki Okano
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/0906 , G11B7/0916 , G11B7/0956
摘要： According to one embodiment, a diffraction pattern of a diffraction element, or a hologram polarization element, to guide a reflected laser beam divided into a predetermined number to a photodetector is combined preferably as one unit, in order to provide an optical head unit and an optical disc apparatus, which provides a stable reproducing signal, irrespectively of the standards of recording media, when reproducing information from a recording medium of optional standard. By using this diffraction pattern, it is possible to obtain outputs usable to detect first, second and third signals used to detect a tracking error when reproducing information recorded on an optical disc from a reflected laser beam from an optical disc, a fourth signal used to detect a focus error, and a fifth signal used to detect a disc tilt error and a spherical aberration compensating component.
摘要翻译：根据一个实施例，衍射元件或全息偏振元件的衍射图案，用于将被分成预定数量的反射激光束引导到光电检测器，优选组合为一个单元，以便提供光学头单元和光盘装置，当从可选标准的记录介质再现信息时，提供与记录介质的标准无关的稳定再现信号。通过使用该衍射图案，可以获得可用于检测从用于从光盘反射的激光束再现记录在光盘上的信息时检测跟踪误差的第一，第二和第三信号的输出，第四信号用于检测聚焦误差，以及用于检测光盘倾斜误差的第五信号和球面像差补偿分量。

33. 发明申请

US20070025227A1 Optical head and information recording/reproducing apparatus 审中-公开
标题翻译：光头和信息记录/重放装置
公开(公告)号：US20070025227A1
公开(公告)日：2007-02-01
申请号：US11495259
申请日：2006-07-28
申请人： Katsuo Iwata , Kazuhiro Nagata
发明人： Katsuo Iwata , Kazuhiro Nagata
IPC分类号： G11B7/135
CPC分类号： G11B7/131 , G11B7/0901 , G11B7/094 , G11B7/1353 , G11B2007/0006
摘要： According to one embodiment, a diffraction pattern of a diffraction element or hologram polarization element to guide a reflected laser beam divided into a predetermined number is suitably combined as one body in a photodetector, and an optical head unit is easily designed to obtain a focus error signal, a track error signal, a correction track error signal (in a system with a lens shift), and a reproducing signal (RF) from a laser beam reflected on an optical disc. Therefore, when reproducing information from a recording medium of optional standard, it is possible to provide an optical head unit and optical disc apparatus which provides a stable reproducing signal regardless of the standards of recording media.
摘要翻译：根据一个实施例，用于引导被分成预定数量的反射激光束的衍射元件或全息图偏振元件的衍射图案在光电检测器中适当地组合为一体，并且光学头单元容易设计以获得聚焦误差信号，轨道误差信号，校正轨道误差信号（在具有透镜偏移的系统中）以及来自在光盘上反射的激光束的再现信号（RF）。因此，当从可选标准的记录介质再现信息时，可以提供一种提供稳定再现信号的光学头单元和光盘装置，而与记录介质的标准无关。

34. 发明申请

US20060245317A1 Optical head and information recording/reproducing apparatus 审中-公开
标题翻译：光头和信息记录/重放装置
公开(公告)号：US20060245317A1
公开(公告)日：2006-11-02
申请号：US11410158
申请日：2006-04-25
申请人： Katsuo Iwata , Kazuhiro Nagata , Yuuichi Nakamura
发明人： Katsuo Iwata , Kazuhiro Nagata , Yuuichi Nakamura
IPC分类号： G11B7/00
CPC分类号： G11B7/1275 , G11B7/1353 , G11B7/1381 , G11B2007/0006
摘要： To provide an optical head unit which is configured to provide a reproduce signal when reproducing information from a recording medium of a corresponding standard by selectively using laser beams with different wavelengths, an optical diffraction element is provided, in which the grooves of a binary diffraction grating mainly for a laser beam with a wavelength of 655 nm and a blazed diffraction grating mainly for a laser beam with a wavelength of 405 nm are defined substantially parallel, and the reflected laser beams of the laser beams with respective wavelengths reflected by a corresponding optical disc are guided to a substantially the same detection area or detection areas positioned very close to one another in a photodetector.
摘要翻译：为了提供一种光头单元，其被配置为当通过选择性地使用具有不同波长的激光束从相应标准的记录介质再现信息时提供再现信号，提供光学衍射元件，其中二元衍射光栅主要用于波长为655nm的激光束和主要用于波长为405nm的激光束的闪耀衍射光栅被基本上平行地限定，并且具有相应波长的激光束的反射激光束被相应的光盘被引导到基本上相同的检测区域或在光电检测器中彼此非常接近定位的检测区域。

35. 发明申请

US20060245316A1 Optical head and information recording/reproducing apparatus 审中-公开
标题翻译：光头和信息记录/重放装置
公开(公告)号：US20060245316A1
公开(公告)日：2006-11-02
申请号：US11410137
申请日：2006-04-25
申请人： Katsuo Iwata , Kazuhiro Nagata , Yuuichi Nakamura
发明人： Katsuo Iwata , Kazuhiro Nagata , Yuuichi Nakamura
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B2007/0006
摘要： To provide an optical head unit which is configured to provide a reproducing signal difficult to be influenced by vibrations when reproducing information from a recording medium of a corresponding standard by selectively using laser beams with different wavelengths, the distance between a beam split phase of a beam splitter and a photodetector is reduced by providing a ball lens on a beam split plane defined not parallel and not vertical to an axial line connecting an optical coupling prism and a beam splitter, and reducing the distance between a photodetector and a beam split plane of a beam splitter, as an embodiment of a disc apparatus.
摘要翻译：提供一种光头单元，其被配置为当通过选择性地使用具有不同波长的激光束从相应标准的记录介质再现信息时提供难以受到振动的再现信号，光束分束相位之间的距离通过在光束分离平面上设置球面透镜而不是平行且不垂直于连接光耦合棱镜和分束器的轴线而减小光束检测器和光束检测器，并且减小光电检测器与光束分离平面之间的距离分束器，作为盘装置的实施例。

36. 发明申请

US20060221783A1 Optical head and optical disc apparatus 审中-公开
标题翻译：光头和光盘装置
公开(公告)号：US20060221783A1
公开(公告)日：2006-10-05
申请号：US11390393
申请日：2006-03-28
申请人： Kazuhiro Nagata , Katsuo Iwata
发明人： Kazuhiro Nagata , Katsuo Iwata
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B7/1367 , G11B7/13922 , G11B2007/0006
摘要： An embodiment of an optical head unit which is difficult to be influenced by an inter-layer crosstalk of recording layers and decreases a load of a signal reproduce system when reproducing and recording information from an optical disc having two or more recording layers, provide a diffraction optical element for focusing a pattern on the light-receiving surface of a photodetector which receives a reflected laser beam reflected on first and second recording layers of an optical disc and outputs a corresponding signal, in a state that a component close to the center of a reflected laser beam reflected by an optical disc is polarized. The diffraction optical element diffracts the central portion of a reflected laser beam at a fixed rate, receives a reflected laser beam reflected on the recording layer of an optical disc which passes a peripheral edge portion as a non-diffracted light.
摘要翻译：光记录单元的实施例难以受到记录层的层间串扰的影响，并且当从具有两个或更多个记录层的光盘再现和记录信息时减少信号再现系统的负载，提供衍射光学元件，用于在接收在光盘的第一和第二记录层上反射的反射激光束的光电检测器的光接收表面上聚焦图案，并在接近中心的分量的状态下输出相应的信号由光盘反射的反射激光束被极化。衍射光学元件以固定的速率衍射反射激光束的中心部分，接收以非衍射光通过外围边缘部分的光盘的记录层上反射的反射激光束。

37. 发明申请

US20060193220A1 Optical head unit and optical disc apparatus 审中-公开
标题翻译：光头单元和光盘装置
公开(公告)号：US20060193220A1
公开(公告)日：2006-08-31
申请号：US11363606
申请日：2006-02-28
申请人： Katsuo Iwata , Kazuhiro Nagata
发明人： Katsuo Iwata , Kazuhiro Nagata
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/131
摘要： To provide an optical pickup and an optical disc apparatus which obtains stable reproduce signal when reproducing information from a recording medium of a standard handled by selectively using laser beams with different wavelengths, use a diffraction grating having a diffraction pattern defined according to a laser beam with a first wavelength, and when a laser beam with a second wavelength different from a first wavelength passes, obtain an RF signal by adding a non-diffracted light and diffracted light to an output signal.
摘要翻译：为了提供一种光学拾取器和光盘装置，当从通过选择性地使用不同波长的激光束处理的标准的记录介质再现信息时获得稳定的再现信号，使用具有根据激光束定义的衍射图案的衍射光栅，第一波长，并且当具有不同于第一波长的第二波长的激光束通过时，通过将非衍射光和衍射光添加到输出信号来获得RF信号。

38. 发明申请

US20050259557A1 Optical disk unit for recording or reproducing information 失效
标题翻译：用于记录或再现信息的光盘单元
公开(公告)号：US20050259557A1
公开(公告)日：2005-11-24
申请号：US11187847
申请日：2005-07-25
申请人： Shintaro Takehara , Katsuo Iwata , Maho Kuwahara , Sumitaka Maruyama
发明人： Shintaro Takehara , Katsuo Iwata , Maho Kuwahara , Sumitaka Maruyama
IPC分类号： G11B7/24 , G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/007 , G11B7/085 , G11B7/125 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1263 , G11B7/00736 , G11B7/1369 , G11B7/1378 , G11B7/1381 , G11B7/13925 , G11B7/13927 , G11B7/24038 , G11B11/10543 , G11B2007/0013 , G11B2007/13727
摘要： The present invention relates to an optical head device and an optical disk unit using the same. The optical head device includes a relay lens control unit to control at least one of lenses of a relay lens unit based on an output signal outputted from a first optical detector and a power control circuit to control an intensity of a light beam emits from a light source.
摘要翻译：本发明涉及光头装置和使用该光头装置的光盘装置。光头装置包括中继透镜控制单元，用于基于从第一光学检测器输出的输出信号和功率控制电路来控制中继透镜单元的透镜中的至少一个，以控制从光发射的光束的强度资源。

39. 发明授权

US06950376B2 Optical head and optical disk apparatus 失效
标题翻译：光头和光盘装置
公开(公告)号：US06950376B2
公开(公告)日：2005-09-27
申请号：US10128514
申请日：2002-04-24
申请人： Katsuo Iwata
发明人： Katsuo Iwata
IPC分类号： G11B7/09 , G11B7/125 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/131 , G11B7/1378 , G11B7/1381 , G11B7/13927
摘要： A light beam is applied to an optical disk through a first hologram and an objective lens. The first hologram has a first region that can diffract light and a second region that can diffract light. The light beam reflected from the optical disk is applied through the objective lens to a second hologram. The second hologram splits the light beam into a first light beam and a second light beam that have passed through the first region and the second region, respectively.
摘要翻译：光束通过第一全息图和物镜施加到光盘。第一全息图具有可以衍射光的第一区域和可以衍射光的第二区域。从光盘反射的光束通过物镜施加到第二全息图。第二全息图将光束分成已分别通过第一区域和第二区域的第一光束和第二光束。

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