公开(公告)号：US20110122744A1

公开(公告)日：2011-05-26

申请号：US13014031

申请日：2011-01-26

申请人： Yoshiaki KOMMA ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki KOMMA ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/09 ,  G01C21/00

CPC分类号： G11B7/1374 ,  G11B2007/0006

摘要： An objective lens unit according to the present invention includes a first objective lens 41; and a first lens holder 2 for supporting the first objective lens 41. The first lens holder 2 is formed of a material which transmits ultraviolet. Preferably, the first lens holder 2 includes a through-hole, having first and second openings 2a and 2b, through which light incident on the first objective lens 41 passes, and an opening limiting section 3 provided along a circumferential direction of the through-hole and projecting toward a central axis of the through-hole. The first objective lens 41 is supported so as to block the first opening 2b. The opening limiting section 3 guides light incident thereon from the second opening 2a in a direction away from an optical axis of the first objective lens.

公开(公告)号：US07944798B2

公开(公告)日：2011-05-17

申请号：US12064360

申请日：2006-08-24

申请人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

发明人： Yoshiaki Komma ,  Kanji Wakabayashi ,  Kousei Sano ,  Toshiyasu Tanaka ,  Keiichi Matsuzaki ,  Hidenori Wada

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B2007/0006

摘要： An objective lens unit according to the present invention includes a first objective lens 41; and a first lens holder 2 for supporting the first objective lens 41. The first lens holder 2 is formed of a material which transmits ultraviolet. Preferably, the first lens holder 2 includes a through-hole, having first and second openings 2a and 2b, through which light incident on the first objective lens 41 passes, and an opening limiting section 3 provided along a circumferential direction of the through-hole and projecting toward a central axis of the through-hole. The first objective lens 41 is supported so as to block the first opening 2b. The opening limiting section 3 guides light incident thereon from the second opening 2a in a direction away from an optical axis of the first objective lens.

摘要翻译： 根据本发明的物镜单元包括第一物镜41; 以及用于支撑第一物镜41的第一透镜保持器2.第一透镜保持器2由透射紫外线的材料形成。 优选地，第一透镜保持件2包括通孔，具有入射在第一物镜41上的光通过的第一和第二开口2a和2b以及沿着通孔的周向设置的开口限制部3 并朝向通孔的中心轴突出。 第一物镜41被支撑以阻挡第一开口2b。 开口限制部3在远离第一物镜的光轴的方向上引导从第二开口2a入射的光。

公开(公告)号：US20100177621A1

公开(公告)日：2010-07-15

申请号：US12667877

申请日：2008-10-10

申请人： Kanji Wakabayashi ,  Fumitomo Yamasaki ,  Yoshiaki Komma ,  Hironori Tomita

发明人： Kanji Wakabayashi ,  Fumitomo Yamasaki ,  Yoshiaki Komma ,  Hironori Tomita

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/13927 ,  G11B2007/0006

摘要： It is an object of the present invention to provide an optical pickup device being capable of correcting coma aberration induced in a light-condensing optical system including an objective lens for an optical disc and having a reduced size and a reduced thickness in comparison with the conventional art. The present invention includes a first coma-aberration correction actuator (6) including a first tilt drive portion for inclining an objective lens in a first tilt direction, and a second coma-aberration correction actuator (7) including a second tilt drive portion for inclining, in a second tilt direction, a coma-aberration correction lens placed between a light source and a raising mirror for reflecting emitted light toward the objective lens.

摘要翻译： 本发明的目的是提供一种光学拾取装置，其能够校正在具有光盘的物镜的聚光光学系统中引起的彗形像差，并且与常规的相比具有减小的尺寸和减小的厚度 艺术。 本发明包括第一彗形像差校正致动器（6），其包括用于沿第一倾斜方向倾斜物镜的第一倾斜驱动部分和包括第二倾斜驱动部分的第二彗差校正致动器（7） 在第二倾斜方向上，放置在光源和提升镜之间的彗差校正透镜，用于将发射的光反射到物镜。

公开(公告)号：US20100165823A1

公开(公告)日：2010-07-01

申请号：US12280037

申请日：2007-02-15

申请人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

发明人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Toshiyasu Tanaka

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/126 ,  G11B7/1369

摘要： In an optical beam transmissive adjusting mechanism (110) included in an optical pickup device, arrangement positions of a first transmissive element (111) having a first transmittance and a second transmissive element (112) having a second transmittance higher than the first transmittance are switched by a rotational drive unit (105), and an optical beam having a first optical power and an optical beam having a second optical power are output selectively. Furthermore, since a transmissive element of a non-transmissive side for an optical beam is arranged at an angle inclined to an optical axis of the optical beam, the transmissive element does not obstruct a path of the optical beam to be diffused.

摘要翻译： 在包括在光学拾取装置中的光束透射调节机构（110）中，切换具有第一透射率的第一透射元件（111）和具有比第一透射率高的第二透射率的第二透射元件（112）的布置位置 通过旋转驱动单元（105），并且选择性地输出具有第一光功率的光束和具有第二光功率的光束。 此外，由于用于光束的非透射侧的透射元件以与光束的光轴倾斜的角度布置，所以透射元件不会妨碍光束的漫射路径。

公开(公告)号：US07630152B1

公开(公告)日：2009-12-08

申请号：US12464406

申请日：2009-05-12

申请人： Masahiro Inata ,  Kanji Wakabayashi ,  Hironori Tomita

发明人： Masahiro Inata ,  Kanji Wakabayashi ,  Hironori Tomita

IPC分类号： G02B7/02 ,  G02B15/14 ,  G02B27/14

CPC分类号： G02B7/02 ,  G02B27/0025

摘要： A guide shaft and a guide portion movably guide a lens holder for holding a collimator lens (i.e. correction lens) in an optical axis direction. A stepping motor rotates a screw shaft arranged in parallel to the optical axis direction. A nut member converts a rotating movement of the screw shaft into a rectilinear movement of the optical axis direction. An urging spring urges the lens holder against the guide shaft and the guide portion. The lens holder is driven in the optical axis direction along the guide shaft by the stepping motor, with a first contact portion and a second contact portion of the lens holder being contacted with the guide shaft, and a third contact portion of the lens holder being contacted with the guide portion by an urging force of the urging spring. The optical pickup device having the above arrangement allows for stable driving of a correction lens.

摘要翻译： 引导轴和引导部分可移动地引导用于保持准直透镜（即，校正透镜）在光轴方向上的透镜保持器。 步进电机旋转平行于光轴方向布置的螺杆轴。 螺母构件将螺杆轴的旋转运动转换为光轴方向的直线运动。 推动弹簧将透镜保持器推靠在引导轴和引导部分上。 透镜架通过步进电机沿导向轴沿光轴方向驱动，透镜架的第一接触部分和第二接触部分与导向轴接触，透镜架的第三接触部分为 通过推压弹簧的作用力与引导部分接触。 具有上述结构的光学拾取装置允许校正透镜的稳定驱动。

公开(公告)号：US20090034403A1

公开(公告)日：2009-02-05

申请号：US12280588

申请日：2007-02-27

申请人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

发明人： Toshiyasu Tanaka ,  Yoshiaki Komma ,  Kousei Sano ,  Hidenori Wada ,  Keiichi Matsuzaki ,  Kanji Wakabayashi

IPC分类号： G11B7/00 ,  G11B7/125

CPC分类号： G11B7/12

摘要： An optical pickup device which can more improve heat radiation efficiency and an optical disk apparatus including the optical pickup device are provided. The optical pickup device having a base (110), a laser unit (141), an optical system (140) which propagates a laser beam, and an adjusting member (142) includes a heat radiation part (146) which is fixed to a heat radiation surface (141b) of the laser unit and which conducts heat from the heat radiation surface to the adjusting member. Therefore, heat generated by the laser unit is transmitted to the adjusting member and then the base through the heat radiation part to make it possible to efficiently perform heat removal for the laser unit.

摘要翻译： 提供了能够更好地提高散热效率的光拾取装置和包括该光拾取装置的光盘装置。 具有基座（110），激光单元（141），传播激光束的光学系统（140）和调节构件（142）的光学拾取装置包括：热辐射部分（146），其固定到 激光单元的散热表面（141b），并且将热量从热辐射表面传导到调节构件。 因此，由激光单元产生的热量通过散热部分传递到调节部件，然后传递到基部，以便有效地执行激光单元的散热。

公开(公告)号：US07421720B2

公开(公告)日：2008-09-02

申请号：US10515106

申请日：2003-07-28

申请人： Kanji Wakabayashi ,  Masuo Maruyama ,  Yoshito Saji

发明人： Kanji Wakabayashi ,  Masuo Maruyama ,  Yoshito Saji

IPC分类号： G11B33/14

CPC分类号： G11B33/1426 ,  G11B33/1406

摘要： An optical disk device includes: an optical disk drive mechanism disposed in a housing-shape drive case (2), the optical disk drive mechanism including an optical head (7) on which a semiconductor laser (5) is mounted, a rotary driver for driving an optical disk (8), and a transfer mechanism for transferring the optical head (7); and an agitating fan (12) for making air in the drive case (2) flow. In the optical disk device, a wind path is formed so that the air in the drive case (2) flows in a manner in which it is drawn toward an agitating fan (12) side and the drawn air is discharged toward the optical head (7) or the semiconductor laser (5) by rotation of the agitating fan (12). Therefore, a rise in temperature of the semiconductor laser (5) can be suppressed effectively, while the dust proofing is ensured.

摘要翻译： 一种光盘装置，包括：光盘驱动机构，设置在壳体形状的驱动器壳体中，所述光盘驱动机构包括安装有半导体激光器（5）的光学头（7），旋转驱动器 驱动光盘（8）和用于传送光头（7）的传送机构; 和用于使驱动箱（2）中的空气流动的搅拌风扇（12）。 在光盘装置中，形成风路，使得驱动壳体（2）中的空气以朝向搅拌风扇（12）侧的方式流动，并且抽吸空气朝向光学头（...） 7）或半导体激光器（5）通过搅拌风扇（12）的旋转。 因此，能够有效地抑制半导体激光器（5）的温度上升，同时确保防尘。

公开(公告)号：US20080165420A1

公开(公告)日：2008-07-10

申请号：US11966109

申请日：2007-12-28

申请人： Fumitomo YAMASAKI ,  Yoshiaki Komma ,  Kanji Wakabayashi ,  Toshiyasu Tanaka ,  Katsuhiko Hayashi

发明人： Fumitomo YAMASAKI ,  Yoshiaki Komma ,  Kanji Wakabayashi ,  Toshiyasu Tanaka ,  Katsuhiko Hayashi

IPC分类号： G02B27/30 ,  G02B27/42

CPC分类号： G02B5/1895 ,  G11B7/1353 ,  G11B2007/0006

摘要： [Problem] The present invention provides an afocal lens for an optical head that can ensure WD while satisfying NA, the optical head, an optical disc apparatus, a computer, an optical disc player, and an optical disc recorder.[Solution] Using a blue-violet laser beam source with wavelength of about 400 nm, and in an optical head compatible to optical discs having different protective substrate thickness, an afocal lens 105 that expands a diameter of light flux of light from a collimating lens and emits the light as substantially parallel light to an objective lens is provided between the collimating lens 104 and the objective lens 106. The configuration makes it possible to ensure WD while satisfying NA.

摘要翻译： 本发明提供一种能够确保WD同时满足NA的光头的无焦距透镜，光头，光盘装置，计算机，光盘播放器和光盘记录器。 [解决方案]使用具有约400nm波长的蓝紫色激光束源，并且在与具有不同保护衬底厚度的光盘相兼容的光学头中，放置来自准直透镜的光束的直径的无焦透镜105 并且在准直透镜104和物镜106之间设置大致平行的光到物镜的光。 该配置使得可以在满足NA的情况下确保WD。

公开(公告)号：US20080101199A1

公开(公告)日：2008-05-01

申请号：US11924225

申请日：2007-10-25

申请人： Fumitomo YAMASAKI ,  Kousei Sano ,  Yoshiaki Komma ,  Kanji Wakabayashi ,  Toshiyasu Tanaka

发明人： Fumitomo YAMASAKI ,  Kousei Sano ,  Yoshiaki Komma ,  Kanji Wakabayashi ,  Toshiyasu Tanaka

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0909 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention aims to provide an optical head and an optical disk device capable of suitably detecting tracking error signals for different types of optical discs.A polarizing hologram element includes a first area and a second area adjacent to the first area in an area where a beam reflected and diffracted by a BD passes. The first area includes a first transmission area for transmitting many 1st-order diffracted lights from the BD, a second transmission area adjacent to the first transmission area and closer to an optical axis than the first transmission area, and a third transmission area adjacent to the first and second transmission areas. The second area includes a fourth transmission area for transmitting many 1st-order diffracted lights from the BD, a fifth transmission area adjacent to the fourth transmission area and closer to the optical axis than the fourth transmission area, and a sixth transmission area adjacent to the fourth and fifth transmission areas.

摘要翻译： 本发明的目的在于提供一种能够适当地检测不同类型的光盘的跟踪误差信号的光头和光盘装置。 偏振全息元件包括在BD反射和衍射的光束通过的区域中与第一区域相邻的第一区域和第二区域。 第一区域包括用于从BD传输许多1个次衍射光的第一透射区域，与第一透射区域相邻并且比第一透射区域更靠近光轴的第二透射区域， 以及与第一和第二传输区域相邻的第三传输区域。 第二区域包括用于从BD传输许多1个级衍射光的第四传输区域，与第四传输区域相邻并且比第四传输区域更靠近光轴的第五传输区域， 以及与第四和第五传输区域相邻的第六传输区域。

公开(公告)号：US08477584B2

公开(公告)日：2013-07-02

申请号：US12015688

申请日：2008-01-17

申请人： Fumitomo Yamasaki ,  Yoshiaki Komma ,  Kanji Wakabayashi ,  Toshiyasu Tanaka

发明人： Fumitomo Yamasaki ,  Yoshiaki Komma ,  Kanji Wakabayashi ,  Toshiyasu Tanaka

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B7/1381 ,  G11B2007/0006 ,  G11B2007/0013

摘要： When performing a read or write operation on an optical disc with information storage layers, this compatible optical head with a two-focus lens can reduce interference caused by an unnecessary diffracted light reflected from a non-target layer and not contributing to reading or writing. The head reads and/or writes information from/on storage media, including first and second media with different protective substrate thicknesses, by irradiating a given one with a laser beam and includes: a diffraction element that diffracts the beam to produce diffracted light of multiple orders; an objective lens for converging nth and mth order ones of the light on the respective storage layers of the first and second media; a photodetector that receives the beam reflected from the medium and condensed; and a light shielding portion for preventing a portion of the beam reflected from the storage layer of the second medium and including its optical axis from reaching the photodetector. The light shielding portion is arranged so as to reduce loss to be caused by cutting off the portion of the beam to a predetermined value or less.

摘要翻译： 当在具有信息存储层的光盘上执行读取或写入操作时，具有双焦点透镜的兼容光学头可以减少由非目标层反射的不需要的衍射光引起的干扰，并且不会对读取或写入有贡献。 头通过用激光束照射给定的一个来读取和/或从存储介质（包括具有不同保护衬底厚度的第一介质和第二介质）读取和/或写入信息，并且包括：衍射元件，衍射光束以产生多个衍射光 命令; 用于在第一和第二介质的各个存储层上会聚第n个和第m个光的物镜; 光接收器，其接收从介质反射并聚焦的光束; 以及用于防止从第二介质的存储层反射并包括其光轴的光束的一部分到达光电检测器的遮光部分。 遮光部被配置为减少将光束的一部分切断而造成的损失为规定值以下。