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41. 发明授权

US06667943B1 Optical disc apparatus 失效
标题翻译：光盘装置
公开(公告)号：US06667943B1
公开(公告)日：2003-12-23
申请号：US09553854
申请日：2000-04-21
申请人： Koichi Maruyama , Hisashi Konno , Suguru Takishima , Wataru Kubo , Hiroshi Nishikawa , Hiroshi Yamamoto
发明人： Koichi Maruyama , Hisashi Konno , Suguru Takishima , Wataru Kubo , Hiroshi Nishikawa , Hiroshi Yamamoto
IPC分类号： G11B700
CPC分类号： G11B7/1275 , G11B7/1353 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： An optical disc apparatus includes a fixed portion having a light source portion and a movable portion that holds an objective lens and moves along a radial direction of an optical disc. The fixed portion includes the light source portion for selectively emitting short and long wavelength laser beams, and a collimator lens for collimating the laser beams. The objective lens includes a positive refractive lens and a diffractive lens structure formed on a surface of the refractive lens. The diffractive lens structure has wavelength dependence such that spherical aberration varies in the undercorrected direction as wavelength of incident light increases. The objective lens converges the short wavelength laser beam of a predetermined diffraction order onto an informatlon layer of a thin cover type optical disc, and converges the long wavelength laser beam of the identical diffraction order onto an information layer of a thick cover type optical disc.
摘要翻译：光盘装置包括具有光源部分和保持物镜并沿着光盘的径向方向移动的可动部分的固定部分。固定部分包括用于选择性地发射短波长和长波长激光束的光源部分和用于准直激光束的准直透镜。物镜包括形成在折射透镜的表面上的正折射透镜和衍射透镜结构。衍射透镜结构具有波长依赖性，使得随着入射光的波长的增加，球面像差在校正不正确的方向上变化。物镜将预定衍射级的短波长激光束会聚到薄盖型光盘的信息层上，并将相同衍射级的长波长激光束会聚到厚盖型光盘的信息层上。

42. 发明授权

US06278682B1 Optical system for optical disc drive 失效
标题翻译：光盘驱动器光学系统
公开(公告)号：US06278682B1
公开(公告)日：2001-08-21
申请号：US09187337
申请日：1998-11-06
申请人： Suguru Takishima , Hiroshi Nishikawa
发明人： Suguru Takishima , Hiroshi Nishikawa
IPC分类号： G11B700
CPC分类号： B82Y10/00 , G11B7/08564 , G11B7/08576 , G11B7/122 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/1381 , G11B7/1387 , G11B11/10543 , G11B11/10554 , G11B11/10576 , G11B11/1058 , G11B2007/13727
摘要： Disclosed is an optical disc drive for reading/writing data from/on an optical disc. The disc drive is provided with a laser source, an objective lens system, a deflection mirror between the laser source and the objective lens system. An incident angle of the laser beam incident on the objective lens system is changed by rotating the deflection mirror. Further, a relay lens system is provided between the deflection mirror and the objective lens system. A diffraction grating is provided between the laser source and the deflection mirror. The diffraction grating divides an incident beam into at least 0th order beam and ±1st order diffraction beams having predetermined diffraction angles. Further provided is a detecting system that receives the ±1st order diffraction beams deflected by the deflection mirror and determines a rotational position of the deflection mirror in accordance with the received ±1st order diffraction beams.
摘要翻译：公开了一种用于从/从光盘读取/写入数据的光盘驱动器。盘驱动器设置有激光源，物镜系统，激光源和物镜系统之间的偏转镜。通过旋转偏转镜来改变入射在物镜系统上的激光束的入射角。此外，在偏转镜和物镜系统之间设置有中继透镜系统。衍射光栅设置在激光源和偏转镜之间。衍射光栅将入射光束分成具有预定衍射角的至少0阶光束和±1阶衍射光束。进一步提供一种检测系统，其接收由偏转镜偏转的±1级衍射光束，并根据所接收的±1级衍射光束确定偏转镜的旋转位置。

43. 发明授权

US6018393A Evaluating system for a dual focus lens 失效
标题翻译：评估双焦镜头系统
公开(公告)号：US6018393A
公开(公告)日：2000-01-25
申请号：US899721
申请日：1997-07-24
申请人： Suguru Takishima , Toshiyuki Kase
发明人： Suguru Takishima , Toshiyuki Kase
IPC分类号： G01M11/02 , G01B9/02
CPC分类号： G01M11/0271
摘要： An lens evaluating system for evaluating a dual-focus lens is disclosed. The lens evaluating system is provided with an interferometer to form an image of interference fringes and a masking system which masks a part of the image corresponding to a noise component.
摘要翻译：公开了一种用于评估双焦点透镜的透镜评估系统。透镜评估系统设置有干涉仪以形成干涉条纹的图像，以及遮蔽对应于噪声分量的图像的一部分的掩蔽系统。

44. 发明授权

US5701216A Shutter mechanism for disk drive cartridge insertion opening 失效
标题翻译：磁盘驱动器盒插入开口的快门机构
公开(公告)号：US5701216A
公开(公告)日：1997-12-23
申请号：US599339
申请日：1996-02-08
申请人： Hiroshi Yamamoto , Suguru Takishima , Shimpei Shinozaki
发明人： Hiroshi Yamamoto , Suguru Takishima , Shimpei Shinozaki
IPC分类号： G11B17/04 , G11B33/02
CPC分类号： G11B17/0405 , G11B33/027
摘要： A shutter mechanism for a disk drive includes at least one flat wire spring member inserted within lateral sides of opposing swingable shutters provided to a cartridge insertion opening to connect the shutters. The spring member swing the shutters closed when they are swingedly displaced from a neutral position. Regulating members control the range of the swingable shutters, and positions end portions of the shutters to guide an inserted disk cartridge to a waiting carriage for transporting the disk cartridge within the drive.
摘要翻译：用于盘驱动器的快门机构包括至少一个扁平线弹簧构件，其插入到设置到盒插入开口以连接快门的相对的可摆动百叶窗的侧面内。当弹簧构件从中立位置摆动移动时，使快门关闭。调节构件控制可摆动百叶窗的范围，并且定位百叶窗的端部以将插入的盘盒引导到用于在驱动器内传送盘盒的等待托架。

45. 发明授权

US5617387A Optical system for optical information recording/reproducing apparatus 失效
标题翻译：用于光学信息记录/再现装置的光学系统
公开(公告)号：US5617387A
公开(公告)日：1997-04-01
申请号：US782737
申请日：1991-10-28
申请人： Takashi Morita , Suguru Takishima , Isao Okuda
发明人： Takashi Morita , Suguru Takishima , Isao Okuda
IPC分类号： G11B7/08 , G02B26/08 , G11B7/09 , G11B7/12 , G11B7/135 , G11B7/22 , G11B11/105 , G11B7/00 , G02B5/30
CPC分类号： G02B26/0875 , G11B7/094 , G11B7/1365 , G11B7/22 , G11B11/10543 , G11B7/0901 , G11B7/12
摘要： In an optical system comprising a light source section consisting of a semiconductor laser and a collimator lens, an objective lens for focusing a light beam on an optical disk, a beam splitter for separating part of the light beam reflected from the optical disk, a condenser lens, and a photosensor for detecting the separated light beam to produce a focusing and a tracking error signal, a plane parallel plate is provided between the light source section and the beam splitter. By rotating the plane parallel plate with an adjusting mechanism, the light beam undergoes a parallel shift, so that the intensity distribution of light being incident on the objective lens is varied and a tracking offset due to a deviation of the optical axis of the output light from the light source section can be compensated for. The plane parallel plate may be disposed between the beam splitter and the condenser lens.
摘要翻译：在包括由半导体激光器和准直透镜构成的光源部分的光学系统中，用于将光束聚焦在光盘上的物镜，用于分离从光盘反射的光束的一部分的分束器，冷凝器透镜和用于检测分离的光束以产生聚焦和跟踪误差信号的光电传感器，在光源部分和分束器之间设置平面平行板。通过用调整机构旋转平面平行板，光束经受平行移动，使得入射到物镜上的光的强度分布变化，并且由于输出光的光轴偏离引起的跟踪偏移从光源部分可以补偿。平面平行板可以设置在分束器和聚光透镜之间。

46. 发明授权

US5592447A Control device for head unit having optical head and multiple magnetic heads 失效
标题翻译：用于具有光头和多个磁头的头单元的控制装置
公开(公告)号：US5592447A
公开(公告)日：1997-01-07
申请号：US539763
申请日：1995-10-06
申请人： Suguru Takishima
发明人： Suguru Takishima
IPC分类号： G11B11/105 , G11B7/095
CPC分类号： G11B11/10595 , G11B11/10554 , G11B11/10573 , G11B11/1058
摘要： A head unit control device comprising an optical head unit for radiating a laser beam onto a magneto-optical disc, a magnetic head unit including a floating magnetic head and a fixed magnetic head. Luminous flux is radiated onto the magnetic head unit and the optical head unit. The luminous flux reflected by these units is sensed by photo detectors, so that a relative position error signal is generated by a sensing circuit. When information is overwritten onto the magneto-optical disc on which information has been already recorded, the floating magnetic head is moved in synchronization with the optical head, based on the relative position error signal. When information is recorded on the magneto-optical disc on which information has not been recorded, the fixed magnetic head is moved in synchronization with the optical head, based on the relative position error signal.
摘要翻译：一种头单元控制装置，包括用于将激光束照射到磁光盘上的光学头单元，包括浮动磁头和固定磁头的磁头单元。光通量辐射到磁头单元和光头单元上。由这些单元反射的光通量由光电检测器检测，从而由感测电路产生相对位置误差信号。当信息被覆盖到已经记录了信息的磁光盘上时，浮动磁头基于相对位置误差信号与光头同步移动。当信息被记录在尚未记录信息的磁光盘上时，固定磁头基于相对位置误差信号与光头同步移动。

47. 发明授权

US5416753A Magneto-optical disk drive system with head position adjustability 失效
标题翻译：磁头驱动系统，磁头位置可调
公开(公告)号：US5416753A
公开(公告)日：1995-05-16
申请号：US151113
申请日：1993-11-12
申请人： Hiroshi Kanazawa , Shimpei Shinozaki , Suguru Takishima , Isao Okuda
发明人： Hiroshi Kanazawa , Shimpei Shinozaki , Suguru Takishima , Isao Okuda
IPC分类号： G11B11/105 , G11B17/04 , G11B13/04
CPC分类号： G11B17/0434 , G11B11/10558 , G11B11/10571 , G11B11/10573
摘要： A magneto-optical disk drive system is provided with a housing and a disk cartridge for housing a magneto-optical disk therein. The disk cartridge is insertable into the housing, an optical head is disposed in the housing for movement in a first radial direction of the magneto-optical disk on one side thereof. A magnetic head is disposed in the housing for movement in a second radial direction of the magneto-optical disk on an opposite side thereof, and a position sensor is coupled to the optical and magnetic heads, for detecting the relative position of the optical and magnetic heads. A first position adjuster disposed in the housing for aligning the first and second radial directions with each other, second position adjuster disposed in the housing for positionally aligning the optical head and the magnetic head with each other across the first and second radial directions, and third position adjuster is disposed in the housing for positionally adjusting the position sensor with respect to the optical head and the magnetic head along the first and second radial directions.
摘要翻译：磁光盘驱动系统设置有壳体和用于在其中容纳磁光盘的盘盒。磁盘盒可插入壳体中，光学头设置在壳体中，用于在其一侧的磁光盘的第一径向方向上移动。一个磁头设置在壳体中，用于在磁光盘的相反侧的第二径向移动，并且位置传感器耦合到光磁头，用于检测光磁盘的相对位置头。第一位置调节器，设置在壳体中，用于使第一和第二径向对准，第二位置调节器设置在壳体中，用于使光学头和磁头在第一和第二径向方向上彼此定位; 位置调节器设置在壳体中，用于相对于光学头和磁头沿着第一和第二径向位置地调节位置传感器。

48. 发明授权

US5309423A Magneto-optical reproducing device with optical system having two reflective elements and providing phase difference cancellation 失效
标题翻译：具有光学系统的磁光再现装置具有两个反射元件并提供相位差消除
公开(公告)号：US5309423A
公开(公告)日：1994-05-03
申请号：US929535
申请日：1992-08-14
申请人： Masato Noguchi , Isao Okuda , Suguru Takishima
发明人： Masato Noguchi , Isao Okuda , Suguru Takishima
IPC分类号： G11B11/10 , G11B11/105 , G11B7/00
CPC分类号： G11B11/10543
摘要： A reflected light beam from a magneto-optic disk is reflected by a first and second reflective element toward a signal detecting system. The first reflective element reflects the reflected light from the magneto-optic disk and gives a phase difference into the light beam. The second reflective element reflects the reflected light by the first reflective element toward the signal detecting system, and gives a phase difference which has the same amount as the phase difference caused by the first reflective element, but with the inverse sign thereof.
摘要翻译：来自磁光盘的反射光束被第一和第二反射元件反射向信号检测系统。第一反射元件反射来自磁光盘的反射光，并给出光束的相位差。第二反射元件将第一反射元件的反射光反射到信号检测系统，并且给出与由第一反射元件引起的相位差相同量的相位差，但是具有其相反的符号。

49. 发明授权

US5103345A Optical head 失效
标题翻译：光头
公开(公告)号：US5103345A
公开(公告)日：1992-04-07
申请号：US588037
申请日：1990-09-25
申请人： Osamu Watanabe , Suguru Takishima
发明人： Osamu Watanabe , Suguru Takishima
IPC分类号： G11B7/09
CPC分类号： G11B7/0935 , G11B7/0929
摘要： In a reflecting plate provided on an optical head arranged to be movable at least in a predetermined direction within a device such as a compact-disk player and the like, a multiplicity of irregularities are formed on a surface of the reflecting plate for causing diffused reflection of light. Then, since the light is diffusely reflected at the edge portions of the reflecting plate in the predetermined direction, an area, in which a linear relation exists between movement of the optical head and the output level of an amplifier signal in accordance with the movement can be wider as compared with the case in which these irregularities are not formed.
摘要翻译：在设置在光学头上的反射板中，其设置成至少在诸如光盘播放器等的装置内能够在预定方向上移动，在反射板的表面上形成多个不规则部分，用于引起漫反射的光。然后，由于光在反射板的边缘部分沿预定方向漫反射，所以根据移动可以在光头的移动与放大器信号的输出电平之间存在线性关系的区域与不形成这些不规则的情况相比更宽。

50. 发明授权

US08305865B2 Optical information recording/reproducing optical system and optical information recording/reproducing apparatus 失效
标题翻译：光信息记录/再现光学系统和光信息记录/重放装置
公开(公告)号：US08305865B2
公开(公告)日：2012-11-06
申请号：US12893268
申请日：2010-09-29
申请人： Satoshi Inoue , Yuta Yoshida , Naoto Hashimoto , Suguru Takishima
发明人： Satoshi Inoue , Yuta Yoshida , Naoto Hashimoto , Suguru Takishima
IPC分类号： G11B7/135
CPC分类号： G11B7/1374
摘要： An objective lens for an optical information recording/reproducing optical system for an optical disc letting a laser beam impinge on a recording layer of the optical disc, and wherein a center wavelength λ (unit: nm) of the laser beam is in a range defined by a condition: 390≦λ≦420, a base material of the objective lens is made of resin, the resin has a glass transition temperature Tg and light transmissivity T (unit: %) per a path length of 3 mm at a wavelength of 406 nm defined by conditions: Tg≧115° C., 85≦T≦90, same antireflection films or different types of antireflection films are respectively formed on optical surfaces of the objective lens, and each of the antireflection films formed on the objective lens has a thickness of 100 nm or more in a vicinity of an optical axis of the objective lens.
摘要翻译：一种用于光盘的光学信息记录/再现光学系统的物镜，其使激光束照射在光盘的记录层上，并且其中激光束的中心波长λ（单位：nm）在限定的范围内通过条件：390＆nlE;λ＆nlE; 420，物镜的基材由树脂制成，树脂的玻璃化转变温度Tg和光透射率T（单位：％），每个路径长度为3mm，波长为由条件限定的406nm：Tg≥115℃，85＆lt; NE; T＆lt; NE; 90，在物镜的光学表面上分别形成相同的防反射膜或不同类型的抗反射膜，并且形成在物镜上的每个防反射膜在物镜的光轴附近具有100nm以上的厚度。

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