公开(公告)号：US07200849B2

公开(公告)日：2007-04-03

申请号：US10761617

申请日：2004-01-21

申请人： Hideki Aikoh ,  Tohru Nakamura ,  Osamu Mizuno

发明人： Hideki Aikoh ,  Tohru Nakamura ,  Osamu Mizuno

IPC分类号： G11B7/08

CPC分类号： G11B7/0935 ,  G11B7/0933 ,  G11B7/0956

摘要： An optical head is driven in a tracking direction with respect to a rotating optical disc. The optical head includes a light source, an optical block, a condenser shifter, and a rotating mechanism. The light source is used to read and write data from/on the optical disc. The optical block supports the light source. The condenser shifter includes a condenser, a movable body, a base, a focus direction drive mechanism and a tracking direction drive mechanism. The condenser focuses light, emitted from the light source, toward the optical disc. The movable body supports the condenser. The base supports the movable body elastically such that the movable body is able to shift in a focus direction and in the tracking direction. The focus and tracking direction drive mechanisms are provided to shift the movable body in the focus and tracking directions, respectively. The rotating mechanism rotates the condenser shifter around a predetermined axis with respect to the optical block on at least one of a first plane, which is parallel to the tracking direction and perpendicular to the optical disc, and a second plane, which is perpendicular to the tracking direction.

摘要翻译： 光头相对于旋转光盘在跟踪方向上被驱动。 光头包括光源，光学块，冷凝器移位器和旋转机构。 光源用于从/从光盘读取和写入数据。 光学块支撑光源。 冷凝器移动器包括冷凝器，可移动体，基座，聚焦方向驱动机构和跟踪方向驱动机构。 聚光器将从光源发射的光朝向光盘聚焦。 可移动体支撑冷凝器。 基座弹性地支撑可移动体，使得可移动体能够在聚焦方向和跟踪方向上移动。 提供聚焦和跟踪方向驱动机构以分别在焦点和跟踪方向上移动可移动体。 所述旋转机构在平行于跟踪方向并垂直于光盘的第一平面和垂直于光盘的第二平面中的至少一个上相对于光学块围绕预定轴旋转冷凝器移位器，第二平面垂直于光盘 跟踪方向。

公开(公告)号：US06970404B2

公开(公告)日：2005-11-29

申请号：US09972701

申请日：2001-10-05

申请人： Fumitomo Yamasaki ,  Hideki Aikoh ,  Akihiro Arai ,  Tohru Nakamura

发明人： Fumitomo Yamasaki ,  Hideki Aikoh ,  Akihiro Arai ,  Tohru Nakamura

IPC分类号： G11B7/09 ,  G11B7/095 ,  G11B7/00

CPC分类号： G11B7/094 ,  G11B7/0901 ,  G11B7/0956

摘要： An information recording/reproducing apparatus includes a focusing optical system for focusing light from a light source on an information recording medium as a light spot and an error signal generation system for generating an error signal that represents the positional deviation between an information track and the light spot on the information recording medium from the light reflected by the information recording medium. The apparatus further includes a tilt measurement system for measuring the amount of relative inclination between the focusing optical system and the information recording medium and an offset application system for performing off-track of the light spot by applying an electric offset corresponding to the measured amount of inclination to the error signal. Since the electric offset that corresponds to the amount of inclination is added directly to the error signal, the apparatus does not require a complicated algorithm and can improve the recording and reproduction characteristics easily at low cost.

摘要翻译： 一种信息记录/再现装置，包括用于将来自光源的光聚焦在作为光点的信息记录介质上的聚焦光学系统和用于产生表示信息光道与光线之间的位置偏差的误差信号的误差信号发生系统 从信息记录介质反射的光线在信息记录介质上点光。 该装置还包括倾斜测量系统，用于测量聚焦光学系统和信息记录介质之间的相对倾斜度，以及偏移应用系统，用于通过施加与所测量的测量量相对应的电偏移来执行光点的偏离轨迹 倾斜于误差信号。 由于对应于倾斜量的电偏移直接与误差信号相加，因此该装置不需要复杂的算法，并且可以以低成本容易地提高记录和再现特性。

公开(公告)号：US08493824B2

公开(公告)日：2013-07-23

申请号：US12089984

申请日：2006-10-10

申请人： Fumitomo Yamasaki ,  Akihiro Arai ,  Hideki Aikoh

发明人： Fumitomo Yamasaki ,  Akihiro Arai ,  Hideki Aikoh

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0943

摘要： A tilt can be detected highly accurately by minimizing the tilt detection error. An optical head includes: an objective lens for converging a light beam from a light source onto an optical disc; a photodetector section receiving the beam, reflected from the disc, at divided areas on its photodetection plane and outputting light detection signals from those areas; and a tilt detecting section for detecting a relative tilt between the lens and disc based on the detection signals. The tilt detecting section generates a first push-pull signal PP1 based on the detection signals supplied from a first group of areas, which are arranged symmetrically to a virtual reference line drawn parallel to a disc radial direction and crossing an optical axis, also generates a second push-pull signal PP2 based on the detection signals supplied from a second group of areas, different from the first group and also arranged symmetrically to the reference line, changes coefficients k according to the location of the lens in a disc radial direction, and generates a tilt detection signal TLT by TLT=PP1−k×PP2.

摘要翻译： 通过最小化倾斜检测误差可以高精度地检测倾斜。 光头包括：用于将来自光源的光束会聚到光盘上的物镜; 光接收器部分，在光检测平面上的分割区域处接收从光盘反射的光束，并从这些区域输出光检测信号; 以及倾斜检测部分，用于基于检测信号检测透镜和光盘之间的相对倾斜度。 倾斜检测部基于从与盘径向平行且与光轴交叉的虚拟参考线对称地配置的第一组区域提供的检测信号，生成第一推挽信号PP1，也产生 基于从与第一组不同的第二组区域提供的并且对称地布置到参考线的检测信号的第二推挽信号PP2根据透镜在盘径向的位置改变系数k，以及 通过TLT = PP1-k×PP2生成倾斜检测信号TLT。

公开(公告)号：US08299782B2

公开(公告)日：2012-10-30

申请号：US11918613

申请日：2006-04-18

申请人： Osamu Mizuno ,  Hiroshi Yamamoto ,  Takuya Wada ,  Hideki Aikoh ,  Kanji Wakabayashi ,  Takatoshi Yukimasa

发明人： Osamu Mizuno ,  Hiroshi Yamamoto ,  Takuya Wada ,  Hideki Aikoh ,  Kanji Wakabayashi ,  Takatoshi Yukimasa

IPC分类号： G01B7/14

CPC分类号： G01D5/145 ,  G11B7/08505 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0013

摘要： As imaging devices are miniaturized, and optical devices are miniaturized, lens moving mechanisms are also miniaturized. Thus, position sensors for them are required to be miniaturized and have high accuracy at low cost. A magnet of a pillar shape and a yoke which move in the X axis direction with respect to a magnetic field detection element are provided, and a shape of a cross section of the yoke which is orthogonal to a longitudinal direction of the magnet changes along the longitudinal direction.

摘要翻译： 随着成像装置小型化，光学装置小型化，透镜移动机构也小型化。 因此，它们的位置传感器需要小型化并且以低成本具有高精度。 提供了相对于磁场检测元件沿X轴方向移动的柱状磁轭和磁轭，并且与磁体的长度方向正交的轭的截面形状沿着 纵向。

公开(公告)号：US07952979B2

公开(公告)日：2011-05-31

申请号：US12305784

申请日：2007-06-15

申请人： Fumitomo Yamasaki ,  Sadao Mizuno ,  Katsuhiko Hayashi ,  Hideki Aikoh

发明人： Fumitomo Yamasaki ,  Sadao Mizuno ,  Katsuhiko Hayashi ,  Hideki Aikoh

IPC分类号： G11B7/135

CPC分类号： G11B7/1376 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： Provides a coupling lens which, when used in combination with an objective lens for a plurality of types of optical discs such as a high density disc, DVD, CD or the like, is capable of compensating for various types of aberrations including those caused by wavelength changes and thus providing good recording or reproduction characteristics with a good wavelength dispersion compensation ability; and an optical head and an optical disc apparatus (drive).A coupling lens is incorporated into an optical head for collecting laser light emitted from a plurality of light sources and having different wavelengths on an information recording face of different types of optical information recording mediums respectively. The coupling lens comprises a first lens and a second lens which are substantially in close contact with each other such that optical axes thereof match each other and designed such that the laser light having different wavelengths are refracted by the close contact face. The coupling lens is afocal for the shortest wavelength among the different wavelengths of the laser light.

摘要翻译： 提供耦合透镜，当与用于诸如高密度盘，DVD，CD等的多种类型的光盘的物镜组合使用时，能够补偿各种类型的像差，包括由波长 改变，从而提供良好的记录或再现特性，具有良好的波长色散补偿能力; 以及光头和光盘装置（驱动器）。 耦合透镜被结合到光学头中，用于分别在不同类型的光学信息记录介质的信息记录面上收集从多个光源发射并具有不同波长的激光。 耦合透镜包括基本上彼此紧密接触的第一透镜和第二透镜，使得其光轴彼此匹配并且被设计成使得具有不同波长的激光被紧密接触面折射。 耦合透镜对于激光的不同波长中的最短波长是无焦点的。

公开(公告)号：US07882513B2

公开(公告)日：2011-02-01

申请号：US11909379

申请日：2006-03-20

申请人： Hideki Aikoh ,  Makoto Takashima ,  Takao Hayashi ,  Akira Yoshikawa ,  Tomio Yamamoto ,  Kouretsu Boku

发明人： Hideki Aikoh ,  Makoto Takashima ,  Takao Hayashi ,  Akira Yoshikawa ,  Tomio Yamamoto ,  Kouretsu Boku

IPC分类号： G11B17/00

CPC分类号： G11B33/1446 ,  G11B7/121 ,  G11B17/0282

摘要： An optical disk device of the present application includes: a turntable 30 including plural induction grooves 31a to 31h as concave portions radially extending from vicinity of a center of the turntable 30 and having open portions in an outer periphery of the turntable 30 and plural through-holes 32a to 32h penetrating bottom faces 33a to 33h on the vicinity of the center side of the plural induction grooves 31a to 31h and a top face of the turntable 30; and an outer rotor type spindle motor 35 provided with plural fins 36a to 36h as convex portions on a rotor on a side face thereof. The optical disk device of the present application utilizes an airflow generated by rotation of the rotor of the spindle motor 35 and the turntable 30 in conjunction therewith as a dust removing wind for removing dust attaching to an objective lens side area.

摘要翻译： 本申请的光盘装置包括：转盘30，其具有作为从转盘30的中心附近径向延伸的凹部的多个感应槽31a〜31h，在转台30的外周具有开口部， 在多个感应槽31a〜31h的中心侧附近的底面33a〜33h以及转台30的上表面的贯通孔32a〜32h的孔32a〜 以及外转子型主轴电动机35，在其侧面的转子上设置有作为凸部的多个翅片36a〜36h。 本申请的光盘装置利用由主轴电机35的转子和转盘30的旋转而产生的气流作为除尘附着到物镜侧区域的除尘风。

公开(公告)号：US07848208B2

公开(公告)日：2010-12-07

申请号：US11905927

申请日：2007-10-05

申请人： Eishin Mori ,  Hideki Aikoh ,  Joji Anzai ,  Kousei Sano

发明人： Eishin Mori ,  Hideki Aikoh ,  Joji Anzai ,  Kousei Sano

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G02B27/0037 ,  G02B27/4238 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0013

摘要： An optical head device is provided with a semiconductor laser, an aberration correcting element for transmitting a beam from the semiconductor laser, a light guiding portion for introducing the beam from the semiconductor laser to the aberration correcting element, and an objective lens for focusing the beam having passed through the aberration correcting element on an optical disc. The aberration correcting element corrects a longitudinal chromatic aberration occurring in the objective lens and a longitudinal chromatic aberration occurring in the light guiding portion excluding the objective lens and the aberration correcting element based on a longitudinal chromatic aberration occurring in the aberration correcting element when the semiconductor laser emits a beam having a wavelength different by a specified wavelength difference.Therefore, an optical head device, an aberration correction method and an optical information processing apparatus can be provided which can suppress a longitudinal chromatic aberration occurring in the entire optical system from a light source to an objective lens.

摘要翻译： 光学头装置设置有半导体激光器，用于透射来自半导体激光器的光束的像差校正元件，用于将来自半导体激光器的光束引入到像差校正元件的导光部分，以及用于聚焦光束的物镜 已经通过光盘上的像差校正元件。 像差校正元件根据在半导体激光器中产生的像差校正元件中发生的纵向色差校正在物镜中发生的纵向色差和除了物镜和像差校正元件之外的导光部分中产生的纵​​向色差 发射波长不同于特定波长差的波束。 因此，可以提供可以抑制从光源到物镜的整个光学系统中发生的纵向色差的光学头装置，像差校正方法和光学信息处理装置。

公开(公告)号：US07773468B2

公开(公告)日：2010-08-10

申请号：US11570821

申请日：2006-04-11

申请人： Fumitomo Yamasaki ,  Eishin Mori ,  Hideki Aikoh ,  Akihiro Arai ,  Joji Anzai

发明人： Fumitomo Yamasaki ,  Eishin Mori ,  Hideki Aikoh ,  Akihiro Arai ,  Joji Anzai

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1369 ,  G11B7/1376 ,  G11B2007/0013

摘要： Fifth order spherical aberration in addition to third order spherical aberration for an optical information recording medium of which thickness of a light transmission layer changes greatly is corrected. An objective lens collects a laser beam emitted from a semiconductor laser on an optical information recording medium. A spherical aberration correcting portion corrects spherical aberration generated according to a thickness of the light transmission layer of the optical information recording medium, in which the spherical aberration correcting portion includes a collimator lens, a lens holder and a stepping motor for correcting the third order spherical aberration and a liquid crystal element and an applied voltage control portion for correcting the fifth order spherical aberration.

摘要翻译： 校正光传输层的厚度变化较大的光信息记录介质的三阶球面像差的第五级球面像差。 物镜将从半导体激光器发射的激光束收集在光学信息记录介质上。 球面像差校正部分校正根据光学信息记录介质的光透射层的厚度产生的球面像差，其中球面像差校正部分包括准直透镜，透镜保持器和用于校正三阶球面的步进电机 像差和用于校正五阶球面像差的液晶元件和施加电压控制部分。

公开(公告)号：US20090161499A1

公开(公告)日：2009-06-25

申请号：US12294310

申请日：2007-03-26

申请人： Hideki Aikoh ,  Masahiro Birukawa

发明人： Hideki Aikoh ,  Masahiro Birukawa

IPC分类号： G11B11/00

CPC分类号： G11B7/122 ,  G11B7/08582 ,  G11B7/1387

摘要： A conventional near-field optical head cannot be miniaturized because a scattering body generating a near field and an optical head exist individually. A near-field optical head capable of being significantly miniaturized is constituted by a near-field optical probe slider formed by holding, on a slider, a semiconductor laser, a heat dissipation member, a prism for guiding light from the semiconductor laser to a scattering body and a photodetector element.

摘要翻译： 常规的近场光学头不能小型化，因为产生近场和光学头的散射体单独存在。 能够显着地小型化的近场光学头由近场光学探头滑块构成，其通过在滑块上保持半导体激光器，散热构件，用于将来自半导体激光器的光引导到散射的棱镜 身体和光电检测器元件。

公开(公告)号：US20090135683A1

公开(公告)日：2009-05-28

申请号：US12066282

申请日：2006-09-07

申请人： Osamu Mizuno ,  Hiroshi Yamamoto ,  Hideki Aikoh

发明人： Osamu Mizuno ,  Hiroshi Yamamoto ,  Hideki Aikoh

IPC分类号： G11B7/00 ,  H02N2/04 ,  B23Q5/22

CPC分类号： H02N2/025 ,  G02B7/182 ,  Y10T74/18888

摘要： A drive mechanism according to the present invention includes: a drive body that defines a longitudinal direction; a mover that makes a friction fit with the drive body so as to slide in the longitudinal direction; a base member that supports the drive body so as to allow the drive body to move in the longitudinal direction; a drive element, which is secured to one end of the drive body to vibrate the drive body in the longitudinal direction; and a viscoelastic body, which is arranged between the drive body and the base member in a direction perpendicular to the longitudinal direction.

摘要翻译： 根据本发明的驱动机构包括：限定纵向方向的驱动体; 与驱动体摩擦配合以便沿纵向滑动的动子; 基部构件，其支撑所述驱动体，以允许所述驱动体沿所述纵向方向移动; 驱动元件，其被固定到驱动体的一端以使驱动体沿纵向振动; 以及在垂直于纵向方向的方向上布置在驱动体和基底构件之间的粘弹体。