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    Converging element, optical head, and apparatus and method of optically recording and reproducing information
    1.
    发明授权
    Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权
    聚光元件，光学头，以及光学记录和再现信息的装置和方法

    公开(公告)号：US06873588B1

    公开(公告)日：2005-03-29

    申请号：US09700343

    申请日：2000-03-14

    申请人： Sadao Mizuno ,  Hiroaki Yamamoto ,  Hideki Hayashi ,  Jouji Anzai ,  Tomotada Kamei

    发明人： Sadao Mizuno ,  Hiroaki Yamamoto ,  Hideki Hayashi ,  Jouji Anzai ,  Tomotada Kamei

    IPC分类号： G11B7/1374 ,  G02B3/08 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1367 ,  G02B3/08 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B7/1398 ,  G11B2007/0006

    摘要： An optical head reproduces optical disks of different disk plate thickness thicknesses t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.

    摘要翻译： 光头通过使用两个波长的光束和一个物镜再现不同盘片厚度t1（0.6mm）或t2（1.2mm）的光盘。 会聚元件包括中心部分和外部部分，其中中心部分具有0.6 * t1至t1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。 通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t1的信息介质和盘片厚度t2的信息介质来记录或再现信息。 或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光学距离L2设定为从第一光源到聚光光学系统的光学距离L1的80〜95％。 或者，只有第一波长的光被屏蔽或衍射成环状。

    Converging element, optical head, and apparatus and method of optically recording and reproducing information
    2.
    发明授权
    Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权
    聚光元件，光学头，以及光学记录和再现信息的装置和方法

    公开(公告)号：US06920102B2

    公开(公告)日：2005-07-19

    申请号：US10694899

    申请日：2003-10-29

    申请人： Sadao Mizuno ,  Hiroaki Yamamoto ,  Hideki Hayashi ,  Jouji Anzai ,  Tomotada Kamei

    发明人： Sadao Mizuno ,  Hiroaki Yamamoto ,  Hideki Hayashi ,  Jouji Anzai ,  Tomotada Kamei

    IPC分类号： G11B7/1374 ,  G02B3/08 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1367 ,  G02B3/08 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B7/1398 ,  G11B2007/0006

    摘要： An optical head reproduces optical disks of different disk plate thickness t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.

    摘要翻译： 光头通过使用两个波长的光束和一个物镜来再现不同盘片厚度t 1（0.6mm）或t 2（1.2mm）的光盘。 收敛元件包括中心部分和外部部分，其中中心部分具有0.6 * t 1至t 1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。 通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t 1的信息介质和盘片厚度t 2的信息介质来记录或再现信息。 或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光距离L 2设定为从第一光源到聚光光学系统的光学距离L 1的80〜95％。 或者，只有第一波长的光被屏蔽或衍射成环状。

    Converging element, optical head, and apparatus and method of optically recording and reproducing information
    3.
    发明授权
    Converging element, optical head, and apparatus and method of optically recording and reproducing information 有权
    聚光元件，光学头，以及光学记录和再现信息的装置和方法

    公开(公告)号：US06859428B2

    公开(公告)日：2005-02-22

    申请号：US10694993

    申请日：2003-10-29

    申请人： Sadao Mizuno ,  Hiroaki Yamamoto ,  Hideki Hayashi ,  Jouji Anzai ,  Tomotada Kamei

    发明人： Sadao Mizuno ,  Hiroaki Yamamoto ,  Hideki Hayashi ,  Jouji Anzai ,  Tomotada Kamei

    IPC分类号： G11B7/1374 ,  G02B3/08 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1367 ,  G02B3/08 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B7/1398 ,  G11B2007/0006

    摘要： An optical head reproduces optical disks of different disk plate thickness t1 (0.6 mm) or t2 (1.2 mm) by using light beams of two wavelengths and one object lens. An converging element comprises a central portion and outer portion, wherein the central portion has optimum design plate thickness of 0.6*t1 to t1 and the outer portion has optimum design plate thickness of 0.6 mm. By providing a step difference in the converging element, information can be recorded or reproduced for an information medium of disk plate thickness t1 and for an information medium of disk plate thickness t2, in a state having small side lobes. Alternatively, a step difference is provided in the object lens, and optical distance L2 from a second light source to a condensing optical system is set to 80 to 95% of optical distance L1 from a first light source to the condensing optical system. Alternatively, only light of first wavelength is shielded or diffracted in a ring-like shape.

    摘要翻译： 光头通过使用两个波长的光束和一个物镜来再现不同盘片厚度t1（0.6mm）或t2（1.2mm）的光盘。 会聚元件包括中心部分和外部部分，其中中心部分具有0.6 * t1至t1的最佳设计板厚度，并且外部部分具有0.6mm的最佳设计板厚度。 通过在会聚元件中提供阶梯差，可以在具有小的旁瓣的状态下，对于盘片厚度t1的信息介质和盘片厚度t2的信息介质来记录或再现信息。 或者，在物镜中设置阶梯差，从第二光源到聚光光学系统的光学距离L2设定为从第一光源到聚光光学系统的光学距离L1的80〜95％。 或者，只有第一波长的光被屏蔽或衍射成环状。

    Optical head and optical recording and reproducing apparatus
    4.
    发明授权
    Optical head and optical recording and reproducing apparatus 失效
    光头和光记录和再现装置

    公开(公告)号：US07254107B2

    公开(公告)日：2007-08-07

    申请号：US10817836

    申请日：2004-04-06

    申请人： Hidenori Wada ,  Tomotada Kamei ,  Sadao Mizuno ,  Hideki Hayashi

    发明人： Hidenori Wada ,  Tomotada Kamei ,  Sadao Mizuno ,  Hideki Hayashi

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1263 ,  G11B7/1378 ,  G11B7/1381 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical head is provided with: an objective-lens-use opening that determines an aperture of the objective lens; a light-source light-quantity controlling opening that aperture-controls light that has been separated by the light separation device; a light detector that receives light that has been aperture-controlled by the light-source light-quantity controlling opening; and a light detector that receives light that has been reflected by the optical recording medium, and has an arrangement in which: the length of the optical light path from the spherical aberration correcting device to the objective-lens-use opening is made virtually the same as a length of the optical light path from the spherical aberration correcting device to the light-source light-quantity controlling opening, and the aperture of the light-source light-quantity controlling opening has virtually the same size as the aperture of the objective-lens-use opening. The objective of the present invention is to provide an optical head in which a signal outputted from the light quantity detection device is unchanged even when the spherical aberration correcting device is driven so that by using this signal, the quantity of light from the light source is set to an appropriate value.

    摘要翻译： 光学头设置有：确定物镜孔径的物镜使用开口; 光源光量控制开口，其对由所述光分离装置分离的光进行开光控制; 光检测器，其接收由光源光量控制开口进行了光圈控制的光; 以及光检测器，其接收由光记录介质反射的光，并且具有以下配置：使从球面像差校正装置到物镜使用开口的光路的长度基本上相同 作为从球面像差校正装置到光源光量控制开口的光路的长度，并且光源光量控制开口的开口具有与物镜光源控制开口的孔径几乎相同的尺寸， 透镜使用开口。 本发明的目的是提供一种光头，其中从光量检测装置输出的信号即使在球面像差校正装置被驱动时也不变，从而通过使用该信号，来自光源的光量是 设置为适当的值。

    Optical head and optical recording and reproducing apparatus
    5.
    发明申请
    Optical head and optical recording and reproducing apparatus 失效
    光头和光记录和再现装置

    公开(公告)号：US20050058052A1

    公开(公告)日：2005-03-17

    申请号：US10817836

    申请日：2004-04-06

    申请人： Hidenori Wada ,  Tomotada Kamei ,  Sadao Mizuno ,  Hideki Hayashi

    发明人： Hidenori Wada ,  Tomotada Kamei ,  Sadao Mizuno ,  Hideki Hayashi

    IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1263 ,  G11B7/1378 ,  G11B7/1381 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical head is provided with: an objective-lens-use opening that determines an aperture of the objective lens; a light-source light-quantity controlling opening that aperture-controls light that has been separated by the light separation device; a light detector that receives light that has been aperture-controlled by the light-source light-quantity controlling opening; and a light detector that receives light that has been reflected by the optical recording medium, and has an arrangement in which: the length of the optical light path from the spherical aberration correcting device to the objective-lens-use opening is made virtually the same as a length of the optical light path from the spherical aberration correcting device to the light-source light-quantity controlling opening, and the aperture of the light-source light-quantity controlling opening has virtually the same size as the aperture of the objective-lens-use opening. The objective of the present invention is to provide an optical head in which a signal outputted from the light quantity detection device is unchanged even when the spherical aberration correcting device is driven so that by using this signal, the quantity of light from the light source is set to an appropriate value.

    摘要翻译： 光学头设置有：确定物镜孔径的物镜使用开口; 光源光量控制开口，其对由所述光分离装置分离的光进行开光控制; 光检测器，其接收由光源光量控制开口进行了光圈控制的光; 以及光检测器，其接收由光记录介质反射的光，并且具有以下配置：使从球面像差校正装置到物镜使用开口的光路的长度基本上相同 作为从球面像差校正装置到光源光量控制开口的光路的长度，并且光源光量控制开口的开口具有与物镜光源控制开口的孔径几乎相同的尺寸， 透镜使用开口。 本发明的目的是提供一种光头，其中从光量检测装置输出的信号即使在球面像差校正装置被驱动时也不变，从而通过使用该信号，来自光源的光量是 设置为适当的值。

    OPTICAL PICKUP AND OPTICAL DISC DEVICE
    6.
    发明申请
    OPTICAL PICKUP AND OPTICAL DISC DEVICE 审中-公开
    光学拾取和光盘设备

    公开(公告)号：US20100149949A1

    公开(公告)日：2010-06-17

    申请号：US12712272

    申请日：2010-02-25

    申请人： Hisashi Senga ,  Tomotada Kamei ,  Kenzo Ishibashi ,  Hideki Hayashi ,  Yohichi Saitoh

    发明人： Hisashi Senga ,  Tomotada Kamei ,  Kenzo Ishibashi ,  Hideki Hayashi ,  Yohichi Saitoh

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1275 ,  G11B7/123 ,  G11B2007/0006

    摘要： An optical pickup according to the present invention includes an integrated circuit element (LDD) 5 for driving first, second, and third semiconductor lasers 3, 4, and 5. The LDD 50 is shaped so as to have a rectangular principal face surrounded by one side, with a plurality of input/output pins being arranged along each side. The plurality of input/output pins include a first pin group connected to a blue-violet laser 5 whose oscillation wavelength is the shortest, a second pin group connected to a red laser 4, and a third pin group connected to an infrared laser 3. The wiring structure of the optical pickup includes a first transmission line 41 for connecting the first pin group to the blue-violet laser 5, a second transmission line 33 for connecting the second pin group to the red laser 4, and a third transmission line 31 for connecting the third pin group to the infrared laser 3, where the first transmission line 41 is shorter than both the second and third transmission lines 31 and 33. Of the rectangular principal face of the LDD 50, the side along which the first pin group is provided is orthogonal to the side along which the second pin group is provided or to the side along which the third pin group is provided.

    摘要翻译： 根据本发明的光拾取器包括用于驱动第一，第二和第三半导体激光器3,4和5的集成电路元件（LDD）5。LDD 50被成形为具有被一个包围的矩形主面 其中沿着每一侧布置有多个输入/输出引脚。 多个输入/输出引脚包括连接到振荡波长最短的蓝紫色激光器5的第一引脚组，连接到红色激光器4的第二引脚组和连接到红外激光器3的第三引脚组。 光拾取器的布线结构包括用于将第一引线组连接到蓝紫激光器5的第一传输线41，用于将第二引脚组连接到红色激光器4的第二传输线33和第三传输线31 用于将第三引脚组连接到红外激光器3，其中第一传输线41比第二传输线31和第三传输线33短。在LDD 50的矩形主面中，第一引脚组 被设置为与设置有第二引脚组的一侧或与设置第三引脚组的一侧正交。

    Optical pick-up head, optical information apparatus, and optical information reproducing method
    9.
    发明授权
    Optical pick-up head, optical information apparatus, and optical information reproducing method 有权
    光学拾取头，光学信息装置和光学信息再现方法

    公开(公告)号：US07558170B2

    公开(公告)日：2009-07-07

    申请号：US11981366

    申请日：2007-10-31

    申请人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

    发明人： Shin-ichi Kadowaki ,  Kousei Sano ,  Akihiro Arai ,  Katsuhiko Yasuda ,  Tomotada Kamei ,  Hiroaki Yamamoto ,  Fumitomo Yamasaki

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

    摘要： An optical information apparatus of the present invention includes: an optical pick-up head including: a light source; a diffraction unit; a condensing unit; a beam splitter; a photodetector; and a tracking error signal generator. An optical recording medium has tracks arranged substantially at a constant pitch. An average of a pitch is tp. When a main beam is placed on the track, a first sub-beam and a second sub-beam are placed between the tracks. The tracking error signal generator performs a differential arithmetic operation with respect to signals output from a light-receiving portion receiving the main beam to generate a first push-pull signal, performs a differential arithmetic operation with respect to signals output from the light-receiving portions receiving the first sub-beam and the second sub-beam to generate a second push-pull signal, and performs a differential arithmetic operation with respect to the first push-pull signal and the second push-pull signal to generate a tracking error signal, in a case where an amplitude of the first push-pull signal obtained at the pitch tp is fluctuated when the light beam is scanned in a direction orthogonal to the tracks of the optical recording medium.

    摘要翻译： 本发明的光信息装置包括：光拾取头，包括：光源; 衍射单位; 冷凝单元; 分束器; 光检测器; 和跟踪误差信号发生器。 光记录介质具有基本上以恒定间距布置的轨道。 平均音高是tp。 当主光束被放置在轨道上时，第一子光束和第二子光束被放置在轨道之间。 跟踪误差信号发生器对从接收主波束的光接收部分输出的信号执行差分运算，产生第一推挽信号，对从光接收部分输出的信号执行差分运算 接收第一子光束和第二子光束以产生第二推挽信号，并且相对于第一推挽信号和第二推挽信号执行差分算术运算以产生跟踪误差信号， 当在与光记录介质的轨道正交的方向上扫描光束时，以间距tp获得的第一推挽信号的幅度波动的情况。