公开(公告)号：US08429681B2

公开(公告)日：2013-04-23

申请号：US12205081

申请日：2008-09-05

Applicant: Mitsuhiro Hashimoto ,  Ryoichi Kawasaki

Inventor： Mitsuhiro Hashimoto ,  Ryoichi Kawasaki

IPC: G11B33/02 ,  G11B7/00

CPC classification number: G11B7/1376 ,  G11B7/0927 ,  G11B7/13925 ,  G11B2007/0013

Abstract: An optical member driving apparatus comprising: a holding member configured to have an optical member mounted thereon; a driving unit assembly configured to be capable of driving the holding member; a connecting member configured to connect the holding member and the driving unit assembly; and a jointing member configured to joint the connecting member and either or both of the holding member and the driving unit assembly.

Abstract translation: 一种光学构件驱动装置，包括：保持构件，其构造成在其上安装光学构件; 构造成能够驱动所述保持构件的驱动单元组件; 连接构件，其构造成连接所述保持构件和所述驱动单元组件; 以及接合构件，其构造成将所述连接构件和所述保持构件和所述驱动单元组件中的一个或两者接合。

公开(公告)号：US08385180B2

公开(公告)日：2013-02-26

申请号：US12404824

申请日：2009-03-16

Applicant: Tohru Hotta ,  Ryoichi Kawasaki

Inventor： Tohru Hotta ,  Ryoichi Kawasaki

IPC: G11B7/00

CPC classification number: G11B7/13927 ,  G11B7/1353 ,  G11B7/1376

Abstract: An optical pickup apparatus comprising: a laser diode; an objective lens made of a synthetic resin configured to focus laser light emitted from the laser diode to a signal recording layer of an optical disc; and a collimating lens having a diffraction grating and arranged in an optical path between the laser diode and the objective lens, the collimating lens being so moved in an optical axis direction of the laser light as to correct spherical aberration occurring in response to a change in temperature when performing a recording operation for the optical disc, and the collimating lens correcting by the diffraction grating chromatic aberration occurring when switching from the recording operation to a reproducing operation for the optical disc.

Abstract translation: 一种光学拾取装置，包括：激光二极管; 由合成树脂制成的物镜，被配置为将从激光二极管发出的激光聚焦到光盘的信号记录层; 以及具有衍射光栅并配置在激光二极管和物镜之间的光路中的准直透镜，准直透镜沿激光的光轴方向移动，以校正响应于变化而发生的球面像差 以及通过当从记录操作切换到光盘的再现操作时发生的衍射光栅色差校正的准直透镜。

公开(公告)号：US08369193B2

公开(公告)日：2013-02-05

申请号：US12859123

申请日：2010-08-18

Applicant: Ryoichi Kawasaki ,  Tohru Hotta

Inventor： Ryoichi Kawasaki ,  Tohru Hotta

IPC: G11B7/00

CPC classification number: G11B7/22 ,  G11B7/1374 ,  G11B7/13925 ,  G11B2007/0006 ,  Y10T29/49826

Abstract: An optical-pickup apparatus includes: a first-objective lens; a second-objective lens; a lens holder including a first-lens barrel having the first-objective lens mounted on an end face thereof and a second-lens barrel having the second-objective lens mounted on an end face thereof; an actuator unit having the lens holder mounted thereon; and a housing having the actuator unit mounted thereon, the first and second objective lenses each being mounted on the lens holder such that a direction, in which wavefront of coma aberration on each lens face is most advanced in phase, is aligned with a radial direction of an information-recording medium, the actuator unit being mounted on the housing such that an optical axis of the first-objective lens is inclined in the radial direction at an inclination angle of the axis toward a recording surface of the medium required to cancel coma aberration of the first-objective lens to the surface.

Abstract translation: 一种光拾取装置，包括：第一物镜; 第二物镜; 透镜保持器，其包括具有安装在其端面上的第一物镜的第一透镜镜筒和安装在其端面上的具有第二物镜的第二透镜镜筒; 具有安装在其上的透镜保持器的致动器单元; 以及具有安装在其上的致动器单元的壳体，所述第一和第二物镜各自安装在所述透镜保持器上，使得每个透镜面上的彗差的波前相位最前进的方向与径向对齐 所述致动器单元安装在所述壳体上，使得所述第一物镜的光轴在径向方向上以朝向所述介质的记录表面的倾斜角倾斜以消除昏迷所需的介质 第一物镜对表面的像差。

公开(公告)号：US08363526B2

公开(公告)日：2013-01-29

申请号：US12915643

申请日：2010-10-29

Applicant: Tohru Hotta ,  Ryoichi Kawasaki

Inventor： Tohru Hotta ,  Ryoichi Kawasaki

IPC: G11B7/125

CPC classification number: G11B7/13925 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/0013

Abstract: An optical pickup apparatus, which reads signals recorded on first and second signal recording layers of an optical disc, includes: a laser diode; an objective lens to condense a laser beam to the first and second signal recording layers; and a collimating lens disposed in a light path of the laser beam between the laser diode and the objective lens and configured to correct a spherical aberration by moving in a light axis direction of the laser beam, and the objective lens includes a bifocal lens and is configured such that a second focal point does not coincide in position with the second signal recording layer when a first focal point coincides in position with the first signal recording layer, and the first focal point does not coincide in position with the first signal recording layer when the second focal point coincides in position with the second signal recording layer.

Abstract translation: 读取记录在光盘的第一和第二信号记录层上的信号的光学拾取装置包括：激光二极管; 用于将激光束冷凝到第一和第二信号记录层的物镜; 以及准直透镜，其配置在激光二极管与物镜之间的光路的光路上，并配置为通过沿着激光的光轴方向移动来校正球面像差，并且物镜包括双焦点透镜，并且是 被构造成使得当第一焦点与第一信号记录层重合时，第二焦点不与第二信号记录层重合，并且第一焦点与第一信号记录层的位置不重合， 第二焦点与第二信号记录层重合。

公开(公告)号：US08154978B2

公开(公告)日：2012-04-10

申请号：US12040518

申请日：2008-02-29

Applicant: Tohru Hotta ,  Ryoichi Kawasaki ,  Kenji Kan ,  Hiroyuki Shindo

Inventor： Tohru Hotta ,  Ryoichi Kawasaki ,  Kenji Kan ,  Hiroyuki Shindo

IPC: G11B7/00 ,  G02B1/10

CPC classification number: G11B7/1374 ,  G11B7/139

Abstract: An optical pickup apparatus comprising: an objective lens configured to focus laser light having the Gaussian distribution properties emitted from a laser diode to a signal recording layer of an optical disc; and an adjustment coating formed on a surface of an incident face of the objective lens on which the laser light is to be made incident, the adjustment coating being configured to adjust transmittance of the laser light passing through the objective lens, the adjustment coating being formed on the surface of the incident face such that the transmittance is lowered as a numerical aperture of the objective lens is reduced.

Abstract translation: 一种光学拾取装置，包括：物镜，被配置为将具有从激光二极管发射的高斯分布特性的激光聚焦到光盘的信号记录层; 以及形成在要使激光入射的物镜的入射面的表面上的调整涂层，调整涂层被配置为调节通过物镜的激光的透射率，形成调整涂层 在入射面的表面上，由于物镜的数值孔径减小，透射率降低。

公开(公告)号：US08087037B2

公开(公告)日：2011-12-27

申请号：US13036739

申请日：2011-02-28

Applicant: Ryoichi Kawasaki ,  Hiroyuki Shindo

Inventor： Ryoichi Kawasaki ,  Hiroyuki Shindo

IPC: G11B7/085 ,  G11B7/09 ,  G11B7/135

CPC classification number: G11B7/1374 ,  G11B7/0956 ,  G11B7/121 ,  G11B2007/0006

Abstract: An optical-pickup apparatus includes first and second objective lenses that focus first and second laser light on information-recording layers of first and second optical discs, the second optical disc having an information-recording format different from that of the first optical disc; and a lens holder that integrally holds the first and second objective lenses in an adjacent manner, a disc surface of the first optical disc and of the second optical disc being substantially parallel to confronting faces of the first and second objective lenses, that confront the disc surface, a minimum distance between the disc surface and the confronting faces in a direction of an optical axis of the turntable being greater than a thickness of the turntable in a direction of a rotation axis of the turntable, either one or both of the first and second objective lenses configured to focus bluish-violet laser light on an optical disc.

Abstract translation: 光拾取装置包括将第一和第二激光聚焦在第一和第二光盘的信息记录层上的第一和第二物镜，第二光盘具有不同于第一光盘的信息记录格式; 以及以相邻的方式整体地保持所述第一和第二物镜的透镜保持架，所述第一光盘和所述第二光盘的盘表面基本上平行于所述第一和第二物镜的面对的所述盘， 在转台的光轴方向上的盘表面与面对面之间的最小距离大于转台的旋转轴的方向上的厚度，第一和第二 第二物镜被配置为将蓝紫色激光聚焦在光盘上。

公开(公告)号：US08081553B2

公开(公告)日：2011-12-20

申请号：US12324248

申请日：2008-11-26

Applicant: Tohru Hotta ,  Ryoichi Kawasaki

Inventor： Tohru Hotta ,  Ryoichi Kawasaki

IPC: G11B7/00

CPC classification number: G11B7/1378 ,  G11B7/1275 ,  G11B7/1369 ,  G11B7/13925 ,  G11B2007/0006

Abstract: An optical pickup apparatus comprising: a laser diode emitting laser light having a first wavelength; an objective lens focusing the laser light having the first wavelength emitted from the laser diode to each signal recording layer of a first optical disc for which the laser light having the first wavelength is specified as laser light for reproducing a signal and a second optical disc for which laser light having a second wavelength different from the first wavelength is specified as laser light for reproducing a signal; and a spherical aberration correction element disposed in an optical path between the laser diode and the objective lens, the spherical aberration correction element correcting each spherical aberration of the first optical disc and the second optical disc to reproduce a signal recorded in each signal recording layer of the first optical disc and the second optical disc.

Abstract translation: 一种光学拾取装置，包括：发射具有第一波长的激光的激光二极管; 将具有从激光二极管发射的第一波长的激光的物镜聚焦到具有第一波长的激光的第一光盘的每个信号记录层被指定为用于再现信号的激光，以及第二光盘 具有不同于第一波长的第二波长的激光被指定为用于再现信号的激光; 以及球面像差校正元件，设置在激光二极管和物镜之间的光路中，所述球面像差校正元件校正第一光盘和第二光盘的每个球面像差，以再现记录在每个信号记录层中的信号 第一光盘和第二光盘。

公开(公告)号：US08077587B2

公开(公告)日：2011-12-13

申请号：US13034417

申请日：2011-02-24

Applicant: Ryoichi Kawasaki ,  Mitsuhiro Hashimoto

Inventor： Ryoichi Kawasaki ,  Mitsuhiro Hashimoto

IPC: G11B7/00

CPC classification number: G11B7/22 ,  G11B7/127 ,  G11B7/1275 ,  G11B2007/0006

Abstract: A laser attachment device of the present invention is formed of a LD package and a LD holder housing it. A first inner wall of the LD holder to come into contact with a side surface of the LD package is an inclined surface. This allows the facing direction of the LD package to be corrected by the first inner wall being the inclined surface, even when a laser beam emitted from a light emitting chip housed in the LD holder is inclined with respect to an optical axis. Thus, the traveling direction of the laser beam is corrected to the optical axis side.

Abstract translation: 本发明的激光附着装置由LD封装和容纳它的LD保持器构成。 与LD封装的侧表面接触的LD保持器的第一内壁是倾斜表面。 即使当从容纳在LD保持器中的发光芯片发射的激光束相对于光轴倾斜时，也能够通过作为倾斜面的第一内壁来校正LD封装的朝向的方向。 因此，激光束的行进方向被校正到光轴侧。

公开(公告)号：US20110170396A1

公开(公告)日：2011-07-14

申请号：US12986595

申请日：2011-01-07

Applicant: Ryoichi KAWASAKI ,  Tohru Hotta

Inventor： Ryoichi KAWASAKI ,  Tohru Hotta

IPC: G11B7/125 ,  H01L21/50

CPC classification number: G11B7/131 ,  G11B7/1275 ,  G11B7/22 ,  H01S5/005 ,  H01S5/02212 ,  H01S5/4087

Abstract: In the present invention, to improve CD read/write characteristics having poor image height characteristics, a third light emitting source emitting a third laser beam for CD is disposed on an optical axis of an objective lens. Thereby, the third laser beam emitted from the third light emitting source travels along the optical axis of the objective lens, thus generating no coma aberration in the third laser beam. Furthermore, in the present invention, a second light emitting source emitting a second laser beam for DVD and a first light emitting source emitting a first laser beam for BD are disposed across the third light emitting source. Thereby the phase propagation directions of coma aberrations in the first and second laser beams coincide with each other. Adjustment of the coma aberration in one of the laser beams enables the coma aberration in the other laser beam to be adjusted.

Abstract translation: 在本发明中，为了提高具有差的图像高度特性的CD读/写特性，发射用于CD的第三激光束的第三发光源设置在物镜的光轴上。 由此，从第三发光源发射的第三激光束沿着物镜的光轴行进，因此在第三激光束中不产生彗形像差。 此外，在本发明中，发射用于DVD的第二激光束的第二发光源和发射BD的第一激光束的第一发光源跨越第三发光源。 因此，第一和第二激光束中的彗形像差的相位传播方向彼此一致。 在其中一个激光束中调整彗形像差使得能够调整另一个激光束中的彗形像差。

公开(公告)号：US07957234B2

公开(公告)日：2011-06-07

申请号：US12390086

申请日：2009-02-20

Applicant: Tohru Hotta ,  Ryoichi Kawasaki

Inventor： Tohru Hotta ,  Ryoichi Kawasaki

IPC: G11B7/00

CPC classification number: G11B7/13927 ,  G11B2007/0006

Abstract: An optical pickup apparatus comprising: a laser diode; an objective lens configured to focus laser light emitted from the laser diode on a signal recording layer of an optical disc; a first aberration correction element arranged in an optical path between the laser diode and the objective lens; and a second aberration correction element arranged in the optical path between the laser diode and the objective lens and having an aberration correction speed lower than the aberration correction speed of the first aberration correction element, the first aberration correction element and the second aberration correction element being selectively operated according to the required aberration correction speed.

Abstract translation: 一种光学拾取装置，包括：激光二极管; 配置为将从激光二极管发射的激光聚焦在光盘的信号记录层上的物镜; 布置在激光二极管和物镜之间的光路中的第一像差校正元件; 以及第二像差校正元件，其布置在激光二极管和物镜之间的光路中，并且具有比第一像差校正元件的像差校正速度低的像差校正速度，第一像差校正元件和第二像差校正元件为 根据所需的像差校正速度选择性地操作。