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61. 发明申请

US20050185539A1 Optical reproducing apparatus 失效
标题翻译：光学再现装置
公开(公告)号：US20050185539A1
公开(公告)日：2005-08-25
申请号：US11109639
申请日：2005-04-20
申请人： Takeshi Shimano , Hirofumi Sukeda
发明人： Takeshi Shimano , Hirofumi Sukeda
IPC分类号： G11B7/09 , G11B7/00 , G11B7/095 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1374 , G11B7/005 , G11B7/0903 , G11B7/0906 , G11B7/094 , G11B7/0943 , G11B7/123 , G11B7/1263 , G11B7/1275 , G11B7/131 , G11B7/1353 , G11B19/12 , G11B2007/0006
摘要： An optical reproducing apparatus that uses a hologram laser module and is applicable to a DVD Multi drive, wherein five sub spots of light in total that are most suitable to perform the differential push-pull tracking both for DVD-RAM and for DVD-R/RW are irradiated on the disk, respectively, and influence of several sub spots that are unnecessary in recording and reproducing a disk is canceled out by calculation, to realize an optical head that is compatible with the DVD Multi drive using a hologram laser module, and thereby providing a small-size, high-performance optical reproducing apparatus.
摘要翻译：一种使用全息激光模块并适用于DVD多驱动器的光学再现装置，其中总共最适合于执行DVD-RAM和DVD-R / DVD的差分推挽跟踪的五个子光点， RW分别照射在盘上，并且通过计算来抵消在记录和再现盘中不必要的几个子点的影响，以实现与使用全息激光模块的DVD多驱动器兼容的光学头，以及从而提供小尺寸的高性能光学再现装置。

62. 发明授权

US06791934B2 Objective lens optical system, optical head and optical information reproduction apparatus 失效
标题翻译：物镜光学系统，光头和光信息再生装置
公开(公告)号：US06791934B2
公开(公告)日：2004-09-14
申请号：US10076663
申请日：2002-02-19
申请人： Takeshi Shimano , Tetsuo Ariyoshi , Kazuo Shigematsu , Koichi Maruyama , Shuichi Takeuchi
发明人： Takeshi Shimano , Tetsuo Ariyoshi , Kazuo Shigematsu , Koichi Maruyama , Shuichi Takeuchi
IPC分类号： G11B700
CPC分类号： G11B7/1378 , G11B7/093 , G11B7/0935 , G11B7/0943 , G11B7/13927
摘要： When it is intended to realize a lens having a large NA with one lens, an adjustment precision between both surfaces of the lens is very strict. Accordingly an objective lens having an NA of 0.8 or more was usually realized by two lenses. However, a working distance is small, and collision of the objective lens with a disc is apt to occur. A coma corrector for compensating coma caused by decentering of both surfaces in realizing the high NA lens with one lens is added. However, in this case, astigmatism occurs when the objective lens decenters from the coma corrector relatively accompanied with a tracking operation. The objective lens and the coma corrector are fixed to a mirror barrel so as to be unified with each other, and driven by a two-dimensional lens actuator. With such a constitution, decentering of the objective lens and the coma corrector does not occur, and hence astigmatism does not occur.
摘要翻译：当想要实现具有一个透镜的具有大NA的透镜时，透镜的两个表面之间的调节精度非常严格。因此，通常通过两个透镜实现NA为0.8以上的物镜。然而，工作距离小，容易发生物镜与盘的碰撞。添加了一个用于补偿由两个表面偏心造成的实现具有一个透镜的高NA透镜的昏迷校正器。然而，在这种情况下，当物镜相对于跟踪操作相对于昏迷校正器偏离时，发生散光。物镜和彗差校正器被固定到镜筒上，以便彼此一体化，并由二维透镜致动器驱动。通过这样的结构，不会发生物镜和昏迷校正器的偏心，因此不发生散光。

63. 发明授权

US06639925B2 Optical information processing equipment and semiconductor light emitting device suitable therefor 有权
公开(公告)号：US06639925B2
公开(公告)日：2003-10-28
申请号：US09964519
申请日：2001-09-28
申请人： Atsuko Niwa , Tsukuru Ohtoshi , Takao Kuroda , Makoto Okai , Takeshi Shimano
发明人： Atsuko Niwa , Tsukuru Ohtoshi , Takao Kuroda , Makoto Okai , Takeshi Shimano
IPC分类号： H01S500
CPC分类号： B82Y20/00 , H01S5/3202 , H01S5/3407 , H01S5/343 , H01S5/34333
摘要： An information processor of a high reliability and a high recording density, and a blue color, blue-violet color and violet color based semiconductor light emitting device operable at a low threshold current density, used for the same, are provided. An optical information processor of a high reliability and a high recording density enables a moving picture, such as a high-definition television picture, to be recorded and reproduced satisfactorily. A barrier layer in a quantum-well active layer of a semiconductor light emitting device is doped with n-type impurities at a high density. Alternatively, the face orientation of a quantum-well active layer of a semiconductor light emitting device is a plane inclined from the (0001) plane, whereby the threshold current value of the semiconductor light emitting device can be decreased. The semiconductor light emitting device is typified by a gallium nitride based compound semiconductor laser device.

64. 发明授权

US06333908B2 Optical head having two semiconductor lasers of different wavelength, an objective lens focusing laser beams on different thickness substrates, and an annular phase shifter decreasing focused laser beam spot aberration 有权
公开(公告)号：US06333908B2
公开(公告)日：2001-12-25
申请号：US09768310
申请日：2001-01-25
申请人： Takeshi Shimano , Akira Arimoto
发明人： Takeshi Shimano , Akira Arimoto
IPC分类号： G11B7135
CPC分类号： G11B7/127 , G11B7/0909 , G11B7/12 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： An objective lens and an optical head including the objective lens for reading information contained on substrates having different thicknesses using laser beams having different wavelengths. The objective lens includes an annular phase shifter for decreasing an aberration of a focused spot of each of the laser beams. The annular phase shifter can be optimally combined with the objective lens having inner and outer regions each having a different substrate thicknesses.

65. 发明授权

US06185177B2 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same 失效
标题翻译：与光源和光电检测器一体形成的飞行型光学头及其光盘装置
公开(公告)号：US06185177B2
公开(公告)日：2001-02-06
申请号：US09573610
申请日：2000-05-19
申请人： Takeshi Shimano , Kenchi Ito , Yooji Maruyama , Hiroyuki Awano
发明人： Takeshi Shimano , Kenchi Ito , Yooji Maruyama , Hiroyuki Awano
IPC分类号： G11B712
CPC分类号： H01S5/18388 , B82Y20/00 , G02B6/12004 , G02B6/124 , G02B6/4246 , G02B2006/12107 , G11B7/122 , G11B7/123 , G11B7/1353 , G11B7/1374 , G11B7/13922 , G11B7/22 , G11B11/10532 , G11B11/10554 , G11B11/1058 , G11B2007/13727 , H01S5/0207 , H01S5/0215 , H01S5/0264 , H01S5/18305 , H01S5/18308 , H01S5/3432
摘要： The optical head is arranged such that a semiconductor laser and a photodetector are formed via a buffer layer on the same substrate; and an opening portion is formed in the substrate under the semiconductor laser and the photodetector. This optical head is further arranged by that the opening portion is filled with a first transparent layer; a diffraction grating is formed on a lower surface of the first transparent layer; a second transparent layer is stacked on a lower surface of the first transparent layer; and a condenser lens is formed on a lower surface of the transparent layer. In this optical head, laser light emitted from the semiconductor laser is penetrated through the substrate, the first transparent layer, the diffraction grating, and the second transparent layer, and condensed toward a place just under the condenser lens by the condenser lens, thereby forming a light spot on an optical storage medium positioned apart from the condenser lens, whereas reflection light reflected from the optical storage medium is penetrated through the condenser lens and the second transparent layer, diffracted by the diffraction grating toward a light receiving plane of the photodetector, and further penetrated through the first transparent layer to be received by the photodetector.
摘要翻译：光头被布置成使得半导体激光器和光电检测器经由同一衬底上的缓冲层形成; 并且在半导体激光器下的基板和光电检测器中形成开口部。该光头还通过开口部分填充有第一透明层而进一步布置; 衍射光栅形成在第一透明层的下表面上; 第二透明层堆叠在第一透明层的下表面上; 并且在透明层的下表面上形成聚光透镜。在该光学头中，从半导体激光器发射的激光穿过基板，第一透明层，衍射光栅和第二透明层，并通过聚光透镜朝向聚光透镜正下方的位置冷凝，由此形成位于离聚光透镜的光存储介质上的光点，而从光存储介质反射的反射光穿过聚光透镜和第二透明层，由衍射光栅衍射成光检测器的光接收面，并且进一步穿透第一透明层以被光电检测器接收。

66. 发明授权

US07911889B2 Optical disc apparatus 有权
标题翻译：光盘装置
公开(公告)号：US07911889B2
公开(公告)日：2011-03-22
申请号：US12754211
申请日：2010-04-05
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： An optical disc apparatus includes a laser diode, a first optical component which branches beams from the laser diode into a first beam and a second beam, an objective lens which focuses the first beam on an optical information recording medium, an actuator which drives the objective lens in an optical axis direction, a reference mirror provided in an optical path of the second beam, an optical path length varying unit which varies an optical path length of the second beam, a first photo detector, a second photo detector, a second optical component which branches beams obtained by combining the first beam which is reflected by the optical information recording medium and the second beam which is reflected by the reference mirror and which makes the branched beams incident on the first and second photo detectors, and a signal processing part.
摘要翻译：一种光盘装置，包括激光二极管，将激光二极管分束成第一光束的第一光学部件和第二光束，将第一光束聚焦在光学信息记录介质上的物镜，驱动该物镜的致动器透镜在光轴方向上，设置在第二光束的光路中的参考镜，改变第二光束的光路长度的光程长度变化部，第一光检测器，第二光检测器，第二光检测器通过组合由光信息记录介质反射的第一光束和被参考反射镜反射并使分支光束入射在第一和第二光电检测器上的第二光束而获得的光束的分量，以及信号处理部分。

67. 发明申请

US20080219128A1 OPTICAL PICKUP, OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS AND METHOD FOR OPTICALLY RECORDING AND REPRODUCING INFORMATION 有权
标题翻译：光学拾取，光学信息记录和再现设备以及用于光学记录和再现信息的方法
公开(公告)号：US20080219128A1
公开(公告)日：2008-09-11
申请号：US12038174
申请日：2008-02-27
申请人： Tatsuro Ide , Kenichi Shimada , Masahiko Takahashi , Takeshi Shimano , Kevin R. Curtis , Ken E. Anderson
发明人： Tatsuro Ide , Kenichi Shimada , Masahiko Takahashi , Takeshi Shimano , Kevin R. Curtis , Ken E. Anderson
IPC分类号： G11B7/00
CPC分类号： G11B7/00772 , G03H1/041 , G11B7/1353 , G11B7/1378
摘要： An optical pickup for recording a hologram by using an angle multiplexing method. An optical beam is separated into two beams, a signal beam and a reference beam having different convergence/divergence degrees, by using an optical component such as a diffraction lens. The signal and reference beams are made incident upon the same objective, and the optical component or the objective lens is moved in a direction perpendicular to an optical axis, to thereby realize angle multiplex recording. If an optical information recording medium is inclined, the optical component or the objective lens is moved along the direction along which the optical information recording medium moved to change an angle of the reference beam incident upon the optical information recording medium and compensate for degradation of a reproduction signal.
摘要翻译：一种用于通过使用角度复用方法记录全息图的光学拾取器。通过使用诸如衍射透镜的光学部件，将光束分离成两束，信号光束和具有不同会聚/发散度的参考光束。信号和参考光束入射到相同的物镜上，并且光学部件或物镜在垂直于光轴的方向上移动，从而实现角度多路复用记录。如果光学信息记录介质倾斜，则光学部件或物镜沿着光学信息记录介质移动的方向移动以改变入射在光学信息记录介质上的参考光束的角度并补偿光学信息记录介质的劣化再现信号。

68. 发明申请

US20080205246A1 OPTICAL HEAD AND OPTICAL DISK DEVICE 有权
标题翻译：光头和光盘设备
公开(公告)号：US20080205246A1
公开(公告)日：2008-08-28
申请号：US12025797
申请日：2008-02-05
申请人： Takeshi Shimano , Harukazu Miyamoto , Hideharu Mikami , Jiro Hashizume
发明人： Takeshi Shimano , Harukazu Miyamoto , Hideharu Mikami , Jiro Hashizume
IPC分类号： G11B7/135
CPC分类号： G11B7/1378 , G11B7/0903 , G11B7/1353 , G11B7/1356 , G11B7/1359
摘要： An interference type optical head and an optical disk device that can easily adjust an optical path length difference of a couple of lights, ensure higher signal amplification effect, and are suitable for reduction in size are provided in order to improve a regeneration signal quality with amplification of signal in the case where reflectivity of each layer must be lowered and relative noise for the signal increases because read speed is high in a multilayer optical disk. In view of essentially improving an S/N ratio of the regeneration signal in high-speed rotation of a multilayer disk, a plurality of interference phases are generated and an optical system for differential calculation has been reduced in size with an angular selective polarization conversion element in the optical disk device for amplifying the signal with interference of the light not radiated to the disk with the reflected light from the disk. Moreover, adjustment of reflection mirror angle of the reference light is no longer required by using a corner cube prism as the reference light reflection mirror and highly accurate signal detection can also be realized with a simplified structure.
摘要翻译：可以容易地调整两个光的光程长度差的干涉型光头和光盘装置，确保更高的信号放大效果，并且适合于减小尺寸，以便通过放大来提高再生信号质量在多层光盘中的读取速度高的情况下，必须降低每一层的反射率和信号的相对噪声的信号。鉴于在多层盘的高速旋转中基本上提高再生信号的S / N比，产生多个干涉相位，并且用角度选择偏振转换元件的差分计算用光学系统的尺寸减小了在光盘装置中，用于将没有辐射到盘的光的信号与来自盘的反射光放大的信号。此外，通过使用角隅棱镜作为参考光反射镜，不再需要对参考光的反射镜角度的调整，并且也可以以简化的结构实现高精度的信号检测。

69. 发明申请

US20070268807A1 OPTICAL DISC DRIVE APPARATUS 失效
标题翻译：光盘驱动器
公开(公告)号：US20070268807A1
公开(公告)日：2007-11-22
申请号：US11669223
申请日：2007-01-31
申请人： Shigeharu Kimura , Takeshi Shimano
发明人： Shigeharu Kimura , Takeshi Shimano
IPC分类号： G11B7/00
CPC分类号： G11B7/1367 , G11B7/131 , G11B7/1362 , G11B7/1381 , G11B7/1392 , G11B2007/0013
摘要： The amount of reflected light from an adjacent layer in a multilayer optical disc is reduced by means of a combination of half-wave plates having different optical axes and a flat mirror. The polarization direction of the reflected light from a target layer is changed without changing the polarization direction of reflected light from the adjacent layer so as to detect a signal from the target layer alone. Because no stray light is introduced into the tracking error signal or focus signal, the laser light irradiated position can be controlled with high accuracy. This makes it possible to accurately determine the laser irradiated position during reading and writing, thereby enhancing signal quality. Because no reflected light from the adjacent layer is introduced into the data signal, a data signal with reduced error can be obtained.
摘要翻译：通过具有不同光轴的半波片和平面镜的组合来减少来自多层光盘中的相邻层的反射光的量。改变来自目标层的反射光的偏振方向，而不改变来自相邻层的反射光的偏振方向，从而仅检测来自目标层的信号。由于没有杂散光被引入到跟踪误差信号或聚焦信号中，因此可以高精度地控制激光照射位置。这使得可以在读取和写入期间准确地确定激光照射位置，从而提高信号质量。由于没有将来自相邻层的反射光引入到数据信号中，所以可以获得具有减小的误差的数据信号。

70. 发明授权

US07260033B2 Optical reproducing apparatus 失效
公开(公告)号：US07260033B2
公开(公告)日：2007-08-21
申请号：US11109639
申请日：2005-04-20
申请人： Takeshi Shimano , Hirofumi Sukeda
发明人： Takeshi Shimano , Hirofumi Sukeda
IPC分类号： G11B7/135
CPC分类号： G11B7/1374 , G11B7/005 , G11B7/0903 , G11B7/0906 , G11B7/094 , G11B7/0943 , G11B7/123 , G11B7/1263 , G11B7/1275 , G11B7/131 , G11B7/1353 , G11B19/12 , G11B2007/0006
摘要： An optical reproducing apparatus that uses a hologram laser module and is applicable to a DVD Multi drive, wherein five sub spots of light in total that are most suitable to perform the differential push-pull tracking both for DVD-RAM and for DVD-R/RW are irradiated on the disk, respectively, and influence of several sub spots that are unnecessary in recording and reproducing a disk is canceled out by calculation, to realize an optical head that is compatible with the DVD Multi drive using a hologram laser module, and thereby providing a small-size, high-performance optical reproducing apparatus.

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