公开(公告)号：US20120195180A1

公开(公告)日：2012-08-02

申请号：US13358842

申请日：2012-01-26

申请人： Yuki KOSHIMIZU ,  Mitsuru ITO ,  Hiroyuki ICHIKAWA

发明人： Yuki KOSHIMIZU ,  Mitsuru ITO ,  Hiroyuki ICHIKAWA

IPC分类号： G11B7/135

CPC分类号： G11B7/1362 ,  G11B7/135 ,  G11B7/1365 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical-pickup apparatus includes: a single-wavelength-laser diode to emit a first-laser beam; a two-wavelength-laser diode to emit second- and third-laser beams; an objective lens; a photodetector to be irradiated with first- to third-reflected-light beams of the first- to third-laser beams reflected from the signal-recording layers of first- to third-optical discs; an aberration-correcting plate to guide the second- and third-laser beams toward the lens, and correct astigmatism of the reflected-light beams, and guide the astigmatism-corrected-reflected-light beams toward the photodetector; a semitransparent mirror to guide, toward the lens, the first-laser beam and the second- and third-laser beams having been guided by the aberration-correcting plate, and guide the reflected-light beams toward the aberration-correcting plate; a quarter-wave plate to convert the first- to third-laser beams from linearly-polarized light into circularly-polarized light, and convert the reflected-light beams from circularly-polarized light into linearly-polarized light; and a divergent lens to correct aberration caused by the mirror.

摘要翻译： 光拾取装置包括：发射第一激光束的单波长激光二极管; 用于发射第二和第三激光束的双波长激光二极管; 物镜; 照射从第一至第三光盘的信号记录层反射的第一至第三激光束的第一至第三反射光束的光电检测器; 用于将第二和第三激光束引向透镜的像差校正板，并且校正反射光束的像散，并将像散校正的反射光束引导到光电检测器; 将半导体镜引导到透镜，第一激光束以及由像差校正板引导的第二和第三激光束，并将反射光束引导到像差校正板; 将第一至第三激光束从线性偏振光转换成圆偏振光的四分之一波片，并将来自圆偏振光的反射光束转换成线偏振光; 以及用于校正由镜子引起的像差的发散透镜。

公开(公告)号：US20130003192A1

公开(公告)日：2013-01-03

申请号：US13357806

申请日：2012-01-25

申请人： Mitsuru ITO

发明人： Mitsuru ITO

IPC分类号： G06F17/50 ,  G02B13/18

CPC分类号： G11B7/1367 ,  G02B5/1895 ,  G11B7/1374 ,  G11B7/1392

摘要： A method for designing an objective lens includes: designing a first objective lens, having no annular zone formed on an incident surface on an opposite side to an optical-disc-facing side according to a first optical design with which a laser beam is condensed on a layer between first and second signal recording layers of an optical disc, under conditions including a third temperature between first and second temperatures, and including a third wavelength between first and second wavelengths; and designing a second objective lens, having an annular zone formed on the incident surface of the first objective lens, according to a second optical design with which the laser beam is condensed on the second signal recording layer under the conditions including the second temperature and wavelength the annular zone having such an aspheric coefficient that spherical aberration becomes smaller than that of the first objective lens.

摘要翻译： 一种用于设计物镜的方法包括：根据第一光学设计，将激光束聚焦在第一光学设计上，设计第一物镜，该第一物镜没有形成在与光盘相对侧相对的入射表面上的环形区域 在包括第一和第二温度之间的第三温度并且包括第一和第二波长之间的第三波长的条件下，在光盘的第一和第二信号记录层之间的层; 以及根据第二光学设计设计具有形成在第一物镜的入射表面上的环形区域的第二物镜，在第二信号记录层上，在包括第二温度和波长的条件下，激光束被聚集在第二信号记录层上 所述环形区域具有这样的非球面系数，使得球面像差变得比第一物镜的球面像差小。

公开(公告)号：US20110158079A1

公开(公告)日：2011-06-30

申请号：US13043217

申请日：2011-03-08

申请人： Mitsuru ITO

发明人： Mitsuru ITO

IPC分类号： G11B7/135

CPC分类号： G02B3/04 ,  G11B7/1374 ,  G11B7/13922

摘要： An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape. When the surface R2 has radii h1, h2 and h3 (h1 Δsag1>Δsag2 and Δsag2

公开(公告)号：US20110013291A1

公开(公告)日：2011-01-20

申请号：US12891239

申请日：2010-09-27

申请人： Mitsuru ITO

发明人： Mitsuru ITO

IPC分类号： G02B3/02

CPC分类号： G02B3/04 ,  G11B7/1374 ,  G11B7/13922

摘要： An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape. When the surface R2 has radii h1, h2 and h3 (h1 Δsag1>Δsag2 and Δsag2

摘要翻译： 用于将来自激光源的光束聚焦在光学信息记录介质上的光学拾取透镜是单个透镜。 光学拾取透镜具有两个表面，与靠近激光光源的表面R1相对的表面R2具有连续的形状。 当表面R2具有从光轴到透镜周边的半径h1，h2和h3（h1

＆Dgr; sag1>＆Dgr; sag2和＆Dgr; sag2 <＆Dgr; sag3。

公开(公告)号：US20100086405A1

公开(公告)日：2010-04-08

申请号：US12570330

申请日：2009-09-30

申请人： Asahi HIGO ,  Tetsuya HIOKI ,  Taro TANNO ,  Mitsuru ITO ,  Osamu SEKIGUCHI ,  Seung-Sin YOO

发明人： Asahi HIGO ,  Tetsuya HIOKI ,  Taro TANNO ,  Mitsuru ITO ,  Osamu SEKIGUCHI ,  Seung-Sin YOO

IPC分类号： F04D29/38 ,  B29C45/00

CPC分类号： F04D29/326 ,  F04D29/325 ,  F04D29/38 ,  F04D29/668

摘要： An impeller, a fan apparatus, and a method of manufacturing the impeller are provided. The impeller includes a support portion, a plurality of rotor blades, and a joining member. The joining member is a substantially annular member provided to strengthen the rotor blades against influence of a centrifugal force, and extends in a circumferential direction along a circle centered on a central axis so as to join the rotor blades to one another. In each of the rotor blades, a point of intersection of a leading edge of the rotor blade with a radially outer end of the rotor blade is positioned forward, with respect to a rotation direction, relative to a point of intersection of the leading edge with an outside surface of the support portion. The joining member is positioned radially inwards of the radially outer end of each of the rotor blades.

摘要翻译： 提供叶轮，风扇装置和制造叶轮的方法。 叶轮包括支撑部分，多个转子叶片和接合部件。 接合构件是设置成抵抗离心力的影响而加强转子叶片的大致环形构件，并且沿着以中心轴为中心的圆周向延伸，以将转子叶片彼此连接。 在每个转子叶片中，转子叶片的前缘与转子叶片的径向外端的相交点相对于前缘与叶片的相交点相对于旋转方向位于前方， 支撑部分的外表面。 接合构件位于径向向内的每个转子叶片的径向外端。

公开(公告)号：US20120314559A1

公开(公告)日：2012-12-13

申请号：US13585431

申请日：2012-08-14

申请人： Mitsuru ITO

发明人： Mitsuru ITO

IPC分类号： G11B7/1372 ,  G11B7/1376

CPC分类号： G02B3/04 ,  G11B7/1374 ,  G11B7/13922

摘要： An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens, The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape. When the surface R2 has radii h1, h2 and h3 (h1 Δsag1>Δsag2 and Δsag2

摘要翻译： 用于将来自激光源的光束聚焦在光学信息记录介质上的光学拾取透镜是单透镜。光学拾取透镜具有两个表面，并且与靠近激光光源的表面R1相对的表面R2具有 连续的形状。 当表面R2具有从光轴到透镜周边的半径h1，h2和h3（h1

＆Dgr; sag1>＆Dgr; sag2和＆Dgr; sag2 <＆Dgr; sag3。

公开(公告)号：US20120195181A1

公开(公告)日：2012-08-02

申请号：US13360003

申请日：2012-01-27

申请人： Mitsuru ITO

发明人： Mitsuru ITO

IPC分类号： G11B7/135 ,  B29D11/00

CPC分类号： G11B7/1374 ,  G11B7/1367 ,  G11B7/13922 ,  G11B2007/0006

摘要： Provided is an objective lens manufactured well by using a mold and an optical pickup apparatus including the same. The objective lens of the present invention includes a first region that focuses laser beams of a BD, DVD, and CD standards, a second region that focuses the laser beams of the DVD and CD standards, and a third region that focuses the laser beams of the BD and the DVD standards are provided in this order from a center portion of the objective lens. A first annular zone step provided in the first region has a step amount larger than step amounts of annular zone steps provided in other regions.

摘要翻译： 提供了一种通过使用模具和包括该物镜的光学拾取装置制造的物镜。 本发明的物镜包括聚焦BD，DVD和CD标准品的激光束的第一区域，聚焦DVD和CD标准的激光束的第二区域和聚焦激光束的第三区域 从物镜的中心部分依次设置BD和DVD标准。 设置在第一区域中的第一环形区段具有大于其它区域中提供的环形区段台阶量的台阶量。

公开(公告)号：US20120087227A1

公开(公告)日：2012-04-12

申请号：US13331084

申请日：2011-12-20

申请人： Mitsuru ITO

发明人： Mitsuru ITO

IPC分类号： G11B7/135

CPC分类号： G02B3/04 ,  G11B7/1374 ,  G11B7/13922

摘要： An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape. When the surface R2 has radii h1, h2 and h3 (h1 Δsag1>Δsag2 and Δsag2

摘要翻译： 用于将来自激光源的光束聚焦在光学信息记录介质上的光学拾取透镜是单个透镜。 光学拾取透镜具有两个表面，与靠近激光光源的表面R1相对的表面R2具有连续的形状。 当表面R2具有从光轴到透镜周边的半径h1，h2和h3（h1

＆Dgr; sag1>＆Dgr; sag2和＆Dgr; sag2 <＆Dgr; sag3。

公开(公告)号：US20120087226A1

公开(公告)日：2012-04-12

申请号：US13331036

申请日：2011-12-20

申请人： Mitsuru ITO

发明人： Mitsuru ITO

IPC分类号： G11B7/1376

CPC分类号： G02B3/04 ,  G11B7/1374 ,  G11B7/13922

摘要： An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape. When the surface R2 has radii h1, h2 and h3 (h1 Δsag1>Δsag2 and Δsag2