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公开(公告)号：US5511048A
公开(公告)日：1996-04-23
申请号：US361478
申请日：1994-12-22
申请人： Mitsuru Irie , Takeshi Utakouji , Morihiro Karaki , Nobuo Takeshita , Manabu Koike , Yasuyuki Satou , Naoyuki Egusa , Masahisa Shinoda , Akira Ishimori , Akihiro Shima , Shigenori Yagi
发明人： Mitsuru Irie , Takeshi Utakouji , Morihiro Karaki , Nobuo Takeshita , Manabu Koike , Yasuyuki Satou , Naoyuki Egusa , Masahisa Shinoda , Akira Ishimori , Akihiro Shima , Shigenori Yagi
IPC分类号： G11B11/10 , G11B7/125 , G11B11/105 , G11B11/00
CPC分类号： G11B7/125 , G11B11/10504 , G11B11/10532 , G11B11/10595
摘要： The second harmonic wave of a solid laser light which is emitted from a second harmonic wave light source is divided into a plurality of laser beams by a diffraction grating. The divided laser beams are converged on a record carrier into a plurality of light spots by an optical head. Magnetic field generating coils for applying magnetic fields to the respective light spots in accordance with the recording signals from a signal line are disposed under the record carrier. Part of the solid laser light is reflected and input to a beam splitter. Since part of the light input to the beam splitter is taken out, a stabilizer controls the output of the solid laser light from the second harmonic wave light source, parallel recording/reproduction using the plurality of light spots which are arranged on the record carrier is enabled and the formation of the plurality of light spots is effectively controlled. Thus, a magneto-optical recording and reproducing apparatus which is capable of high-density recording and high-speed data transfer, which supplies a stable and accurate optical output, and which facilitates the control of the optical output is provided.
摘要翻译： 从二次谐波光源发射的固体激光的二次谐波通过衍射光栅被分成多个激光束。 分割的激光束通过光学头被会聚在记录载体上成多个光点。 根据来自信号线的记录信号将磁场施加到各个光点的磁场产生线圈设置在记录载体下方。 固体激光的一部分被反射并输入到分束器。 由于输入到分束器的光的一部分被取出，所以稳定器控制来自二次谐波光源的固体激光的输出，使用布置在记录载体上的多个光点进行并行记录/再现 并且有效地控制多个光点的形成。 因此，提供了能够进行高密度记录和高速数据传送的磁光记录和再现装置，其提供稳定且准确的光输出，并且有助于光输出的控制。
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2.发明授权Optical information processing device having switchable optics for use with plural media types 失效光学信息处理设备具有可与多种介质类型一起使用的可切换光学器件
公开(公告)号：US5986984A
公开(公告)日：1999-11-16
申请号：US596876
申请日：1996-02-09
申请人： Keiji Nakamura , Masahisa Shinoda , Takeshi Utakouji , Norihiro Watanabe , Nobuo Takeshita , Hideaki Kobachi , Masaharu Ogawa , Eiji Yokoyama , Kouichi Komawaki , Kenjiro Kime
发明人： Keiji Nakamura , Masahisa Shinoda , Takeshi Utakouji , Norihiro Watanabe , Nobuo Takeshita , Hideaki Kobachi , Masaharu Ogawa , Eiji Yokoyama , Kouichi Komawaki , Kenjiro Kime
IPC分类号： G11B7/00 , G11B7/0037 , G11B7/005 , G11B7/09 , G11B7/12 , G11B7/125 , G11B7/135 , G11B19/12 , G11B7/095
CPC分类号： G11B19/12 , G11B7/005 , G11B7/0903 , G11B7/093 , G11B7/12 , G11B7/126 , G11B7/1374 , G11B2007/0006 , G11B7/0037
摘要： The reference character 5 denotes a supporting shaft holding base, which holds the lower end of a supporting shaft 103 coated with fluororesin with a small frictional coefficient. The reference characters 107a and 107b are tracking magnets bipolar-magnetized in the right and left direction, which are fixed to a fixing base 1 by bonding. The character 108 denotes a mirror for reflecting a light beam 2 incident from the front in the vertical upward direction. The character 6 denotes a lens holder formed of a plastic material, or the like, with light weight and high stiffness, which holds objective lenses 3 and 4 corresponding to a plurality of optical information recording media with different substrate thicknesses and different recording densities at positions eccentrically displaced by almost equal distances from the supporting shaft 103.
摘要翻译： 附图标记5表示支撑轴保持基座，其保持涂覆有摩擦系数小的氟树脂的支撑轴103的下端。 附图标记107a，107b是在左右方向双极磁化的跟踪磁体，它们通过粘合固定在固定基座1上。 字符108表示用于反射从垂直向上方向入射的光束2的反射镜。 字符6表示由塑料材料等形成的具有重量轻且刚度高的透镜夹持器，其保持对应于具有不同衬底厚度和不同记录密度的多个光学信息记录介质的物镜3和4 偏心距离支撑轴103几乎相等的距离。
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3.发明授权Lens actuating system with improved frequency response for optical disk drive 失效镜头驱动系统具有改善的光盘驱动器的频率响应
公开(公告)号：US5416756A
公开(公告)日：1995-05-16
申请号：US971233
申请日：1992-11-04
CPC分类号： G11B7/08505
摘要： A lens actuating system for an optical disk drive has an objective lens movably mounted in a movable frame with orthogonal X-, Y-, and Z-axes. A seeking servo moves the frame in the X-direction. A tracking servo moves the objective lens in the X-direction. A focusing servo moves the objective lens in the Z-direction. An optoelectronic sensor detects the relative position of the objective lens and frame in the X-direction, so that the tracking servo can maintain a fixed relative position during track-seeking, or in the Z-direction, to establish a neutral point on the Z-axis for the focusing servo. Force applied by the focusing servo or tracking servo to move the objective lens in one direction can be opposed by an equal and opposite force applied to a driven mass, so that a net zero force is transmitted to the frame.
摘要翻译： 用于光盘驱动器的镜头致动系统具有可移动地安装在具有正交X，Y和Z轴的可移动框架中的物镜。 寻求伺服器在X方向上移动框架。 跟踪伺服在X方向移动物镜。 聚焦伺服将物镜沿Z方向移动。 光电传感器在X方向上检测物镜和镜架的相对位置，使得跟踪伺服器可以在寻轨期间或在Z方向上保持固定的相对位置，以在Z上建立中性点 轴用于聚焦伺服。 通过聚焦伺服或跟踪伺服施加的力在一个方向上移动物镜可以通过施加到从动质量上的相等和相反的力相对，从而净零力传递到框架。
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公开(公告)号：US5687032A
公开(公告)日：1997-11-11
申请号：US592178
申请日：1996-01-26
申请人： Nobuo Takeshita , Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane , Kenjiro Kime , Hideaki Kobachi
发明人： Nobuo Takeshita , Teruo Fujita , Morihiro Karaki , Mitsuru Irie , Kazuhiko Nakane , Kenjiro Kime , Hideaki Kobachi
CPC分类号： G11B7/133 , G11B7/00718 , G11B7/0908 , G11B7/0916 , G11B7/0933 , G11B7/0935 , G11B7/094 , G11B7/0948 , G11B7/0956 , G11B7/1353 , G11B7/1381 , G11B7/14 , G11B7/22 , G11B7/0909
摘要： An optical device inclination angle adjuster for adjusting an optical axis of an optical device. The optical device has an optical axis and a peripheral portion, and is held by a holder. The adjuster includes an annular plate inserted between the optical device and the holder. The annular plate is in alignment with the peripheral portion of the optical device, and has an opening with an axis in alignment with the optical axis of the optical device to permit passage of light through the opening of the annular plate and through the optical device. A first pair of projections are formed between the annular plate and the optical device. The first pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. A second pair of projections are formed between the annular plate and the holder. The second pair of projections are disposed diametrically opposite to each other with respect to the optical axis and project in a direction parallel to the optical axis. The first pair of projections and the second pair of projections are disposed at different rotary angles about the optical axis; whereby the inclination angle is adjusted by rotating the optical device about the first pair of projections or about the second pair of projections.
摘要翻译： 一种用于调节光学装置的光轴的光学装置倾斜角度调节器。 光学装置具有光轴和周边部分，并由保持器保持。 调节器包括插入在光学装置和保持器之间的环形板。 环形板与光学装置的周边部分对准，并且具有与光学装置的光轴对准的轴线的开口，以允许光通过环形板的开口并通过光学装置。 第一对突起形成在环形板和光学装置之间。 第一对突起相对于光轴彼此沿径向相对设置，并且在平行于光轴的方向上突出。 第二对突起形成在环形板和支架之间。 第二对突起相对于光轴彼此沿径向相对设置，并且沿与光轴平行的方向突出。 第一对突起和第二对突起以围绕光轴的不同旋转角设置; 由此通过围绕第一对突起或围绕第二对突起旋转光学装置来调节倾斜角度。
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5.发明授权Lens actuating system for an optical disk drive having a driven mass for cancelling forces 失效用于具有用于抵消力的驱动质量的光盘驱动器的镜头致动系统
公开(公告)号：US5479386A
公开(公告)日：1995-12-26
申请号：US312086
申请日：1994-09-26
CPC分类号： G11B7/08505
摘要： A lens actuating system for an optical disk drive has an objective lens movably mounted in a movable frame with orthogonal X-, Y-, and Z-axes. A seeking servo moves the frame in the X-direction. A tracking servo moves the objective lens in the X-direction. A focusing servo moves the objective lens in the Z-direction. An optoelectronic sensor detects the relative position of the objective lens and frame in the X-direction, so that the tracking servo can maintain a fixed relative position during track-seeking, or in the Z-direction, to establish a neutral point on the Z-axis for the focusing servo. Force applied by the focusing servo or tracking servo to move the objective lens in one direction can be opposed by an equal and opposite force applied to a driven mass, so that a net zero force is transmitted to the frame.
摘要翻译： 用于光盘驱动器的镜头致动系统具有可移动地安装在具有正交X，Y和Z轴的可移动框架中的物镜。 寻求伺服器在X方向上移动框架。 跟踪伺服在X方向移动物镜。 聚焦伺服将物镜沿Z方向移动。 光电传感器在X方向上检测物镜和镜架的相对位置，使得跟踪伺服器可以在寻轨期间或在Z方向上保持固定的相对位置，以在Z上建立中性点 轴用于聚焦伺服。 通过聚焦伺服或跟踪伺服施加的力在一个方向上移动物镜可以通过施加到从动质量上的相等和相反的力相对，从而净零力传递到框架。
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公开(公告)号：US20120106310A1
公开(公告)日：2012-05-03
申请号：US13380791
申请日：2011-01-17
IPC分类号： G11B7/1353 , G11B7/1374
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B7/13925 , G11B7/1395 , G11B2007/0013
摘要： An optical head device mounted in an optical disc device. The optical head device is provided with a diffractive optical element and a photodetector. The diffractive optical element has: a primary diffraction region at a location on which the positive and negative first-order components and some of the zero-order component of a reflectively diffracted light beam are incident; and secondary diffraction regions at locations on which the rest of the zero-order component but none of the positive or negative first-order components of the reflectively diffracted light beam are incident. A main light-receiving section of the photodetector receives the zero-order component of a transmissively diffracted light beam that has passed through the primary diffraction region and the secondary diffraction regions. Secondary light-receiving sections receive the positive first-order component and/or the negative first-order component of the transmissively diffracted light beam that has passed through the secondary diffraction regions.
摘要翻译： 安装在光盘装置中的光学头装置。 光头装置设置有衍射光学元件和光电检测器。 衍射光学元件具有：反射衍射光束的正，负一阶分量和零级分量的一部分入射的位置处的主衍射区域; 以及零反射衍射光束的零级分量的其余部分而不是反射衍射光束的正或负一阶分量的位置处的次级衍射区域。 光检测器的主光接收部接收通过一次衍射区域和二次衍射区域的透射衍射光束的零级分量。 次级光接收部分接收通过次级衍射区域的透射衍射光束的正一级分量和/或负一级分量。
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公开(公告)号：US20090303850A1
公开(公告)日：2009-12-10
申请号：US12375138
申请日：2007-05-22
申请人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
发明人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
CPC分类号： G11B7/24 , G11B7/0901 , G11B7/0941 , G11B7/24085 , G11B2007/24308 , G11B2007/2431 , G11B2007/24314 , G11B2007/24316
摘要： When using an optical disc medium that includes pit trains having their widths narrower than a diffraction limit, it is difficult to detect a tracking error signal and take a tracking-servo control while increasing pit density in a direction orthogonal to a pit-train extension direction.Information pit trains are arranged spirally or concentrically and formed in a structure in which their depths are changed periodically at a pitch radially along the optical disc medium, so that the tracking error signal can be obtained by push-pull detection of diffraction light from the structure.
摘要翻译： 当使用包括其宽度窄于衍射极限的凹坑列的光盘介质时，难以检测跟踪误差信号并进行跟踪伺服控制，同时在垂直于凹坑列延伸方向的方向上增加凹坑密度 。 信息坑列被螺旋地或同心地布置并且形成在其深度沿着光盘介质沿径向周期性地改变的结构中，从而可以通过来自结构的衍射光的推挽检测来获得跟踪误差信号 。
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公开(公告)号：US08693295B2
公开(公告)日：2014-04-08
申请号：US12375138
申请日：2007-05-22
申请人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
发明人： Kenya Nakai , Masahisa Shinoda , Nobuo Takeshita
IPC分类号： G11B7/00
CPC分类号： G11B7/24 , G11B7/0901 , G11B7/0941 , G11B7/24085 , G11B2007/24308 , G11B2007/2431 , G11B2007/24314 , G11B2007/24316
摘要： When using an optical disc medium that includes pit trains having their widths narrower than a diffraction limit, it is difficult to detect a tracking error signal and take a tracking-servo control while increasing pit density in a direction orthogonal to a pit-train extension direction. Information pit trains are arranged spirally or concentrically and formed in a structure in which their depths are changed periodically at a pitch radially along the optical disc medium, so that the tracking error signal can be obtained by push-pull detection of diffraction light from the structure.
摘要翻译： 当使用包括其宽度窄于衍射极限的凹坑列的光盘介质时，难以检测跟踪误差信号并进行跟踪伺服控制，同时在垂直于凹坑列延伸方向的方向上增加凹坑密度 。 信息坑列被螺旋地或同心地布置并且形成在其深度沿着光盘介质沿径向周期性地改变的结构中，从而可以通过来自结构的衍射光的推挽检测来获得跟踪误差信号 。
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公开(公告)号：US08472300B2
公开(公告)日：2013-06-25
申请号：US13380791
申请日：2011-01-17
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/131 , G11B7/1353 , G11B7/13925 , G11B7/1395 , G11B2007/0013
摘要： An optical head device mounted in an optical disc device. The optical head device is provided with a diffractive optical element and a photodetector. The diffractive optical element has: a primary diffraction region at a location on which the positive and negative first-order components and some of the zero-order component of a reflectively diffracted light beam are incident; and secondary diffraction regions at locations on which the rest of the zero-order component but none of the positive or negative first-order components of the reflectively diffracted light beam are incident. A main light-receiving section of the photodetector receives the zero-order component of a transmissively diffracted light beam that has passed through the primary diffraction region and the secondary diffraction regions. Secondary light-receiving sections receive the positive first-order component and/or the negative first-order component of the transmissively diffracted light beam that has passed through the secondary diffraction regions.
摘要翻译： 安装在光盘装置中的光学头装置。 光头装置设置有衍射光学元件和光电检测器。 衍射光学元件具有：反射衍射光束的正，负一阶分量和零级分量的一部分入射的位置处的初级衍射区域; 以及零反射衍射光束的零级分量的其余部分而不是反射衍射光束的正或负一阶分量的位置处的次级衍射区域。 光检测器的主光接收部接收通过一次衍射区域和二次衍射区域的透射衍射光束的零级分量。 次级光接收部分接收通过次级衍射区域的透射衍射光束的正一级分量和/或负一级分量。
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公开(公告)号：US06510119B2
公开(公告)日：2003-01-21
申请号：US09727521
申请日：2000-12-04
申请人： Nobuo Takeshita , Mitsuru Irie , Toru Yoshihara
发明人： Nobuo Takeshita , Mitsuru Irie , Toru Yoshihara
IPC分类号： G11B7135
CPC分类号： G11B7/127 , G11B7/126 , G11B7/1356 , G11B2007/0006
摘要： A light source (1) is composed of a single element having a light emitting point (2S) emitting a light (3S) and a light emitting point (2L) emitting a light (3L) at a longer wavelength than the light (3S), the light emitting point (2S) and the light emitting point (2L) being formed monolithically. In the direction parallel to the optical axis of a collimator lens (6), the light emitting point (2S) is placed closer, than the light emitting point (2L), to the collimator lens (6) and is placed on the side of the inclined plane (7a) of the beam shaping prism (7). The incidence angles of the light (3S) and the light (3L) to the inclined plane (7a) are set so that the incidence angle of the light (3S) is larger than that of the light (3L) and so that the lights (3S) and (3L) exit from the inclined plane (7a) at equal exit angles. The collimator lens (6), the beam shaping prism (7), etc. have refractive indexes which become larger as the wavelength of incident light becomes shorter. It is then possible to simplify the structure and reduce the unstableness of operation caused by a difference in light wavelength.
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