公开(公告)号：US06529339B2

公开(公告)日：2003-03-04

申请号：US09940675

申请日：2001-08-29

申请人： Takanori Maeda ,  Katsuhiro Koike ,  Ikuya Kikuchi ,  Makoto Sato

发明人： Takanori Maeda ,  Katsuhiro Koike ,  Ikuya Kikuchi ,  Makoto Sato

IPC分类号： G02B702

CPC分类号： G02B7/021

摘要： A lens made of at least one of a resin and glass includes a lens effective diameter area, a peripheral area formed integral with the lens effective diameter area and located at a periphery of the lens effective diameter area, and at least one marker area located in the peripheral area and formed on a circle whose center is a center of the lens effective diameter area.

公开(公告)号：US06667947B2

公开(公告)日：2003-12-23

申请号：US09988813

申请日：2001-11-20

申请人： Takanori Maeda ,  Ikuya Kikuchi ,  Makoto Sato ,  Katsuhiro Koike ,  Yoshitsugu Araki

发明人： Takanori Maeda ,  Ikuya Kikuchi ,  Makoto Sato ,  Katsuhiro Koike ,  Yoshitsugu Araki

IPC分类号： G11B724

CPC分类号： G11B7/1374 ,  G11B7/00718 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13925 ,  G11B7/24 ,  G11B7/24038 ,  G11B11/10584 ,  G11B2007/13727

摘要： The present invention relates to an optical multi-layer information recording medium for recording information therein and/or retrieving information therefrom upon radiation of a convergent beam of light. The recording medium includes at least two pairs of recording layer and light-transmissive layer stacked one after another. A first recording layer proximal to a beam radiation side and a second recording layer distal from the beam radiation side are made from a material that satisfies a function including the following parameters; transmissivity and absorptance of the first recording layer, absorptance of the second recording layer, a numerical aperture on the first recording layer, a numerical aperture of the second recording layer, and transmissivity of between the first and second recording layers. Even if the numerical apertures change with spherical aberration compensation made to respective recording layers, a power density of a light spot does not change. Thus, recordation can be performed with consistent recording characteristics.

公开(公告)号：US06594091B2

公开(公告)日：2003-07-15

申请号：US09999195

申请日：2001-12-03

申请人： Takanori Maeda ,  Ikuya Kikuchi ,  Katsuhiro Koike ,  Makoto Sato

发明人： Takanori Maeda ,  Ikuya Kikuchi ,  Katsuhiro Koike ,  Makoto Sato

IPC分类号： G02B1318

CPC分类号： G02B27/0025 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13925

摘要： The present invention relates to an optical pickup having a constant numerical aperture even if spherical aberration is compensated for. The optical pickup is used in an information recording and/or reproducing machine. The information recording and/or reproducing machine records and/or reproduces information in a recording medium upon radiation of a light beam from a light source. The optical pickup includes a condensing optical system for condensing the light beam from the light source onto a recording layer of the recording medium. The condensing optical system includes an object lens. The condensing optical system also includes an aperture positioned about a focal length of the object lens apart from a position of a principal incidence plane of the object lens toward the light source along an optical axis of the condensing optical system.

公开(公告)号：US20050122857A1

公开(公告)日：2005-06-09

申请号：US10995089

申请日：2004-11-23

申请人： Makoto Sato ,  Masakazu Ogasawara ,  Ikuya Kikuchi ,  Katsuhiro Koike

发明人： Makoto Sato ,  Masakazu Ogasawara ,  Ikuya Kikuchi ,  Katsuhiro Koike

IPC分类号： G11B7/09 ,  G11B7/00 ,  G11B7/125 ,  G11B7/1275 ,  G11B7/135 ,  G11B7/1369 ,  G11B7/1376 ,  G11B7/1392

CPC分类号： G11B7/13925 ,  G11B7/1275 ,  G11B7/1369 ,  G11B7/1376 ,  G11B2007/0006

摘要： When recording/reading information data onto/from a recording medium by irradiating the recording medium with a first light beam, correction for decreasing the amount of spherical aberration is made just before the recording or reading. On the other hand, when recording/reading information data onto/from a recording medium by irradiating the recording medium with a second light beam, focus correction for correctly condensing the reflected light from the recording medium on the light receiving surface of a photodetector is made just before the recording or reading.

摘要翻译： 当通过用第一光束照射记录介质来记录/读取记录介质上的信息数据时，在记录或读取之前进行用于减小球面像差量的校正。 另一方面，当通过用第二光束照射记录介质来将信息数据记录/从记录介质读取信息数据时，进行用于将来自记录介质的反射光正确地聚集在光电检测器的光接收表面上的聚焦校正 就在录音或阅读之前。

公开(公告)号：US20090201787A1

公开(公告)日：2009-08-13

申请号：US12307853

申请日：2007-07-13

申请人： Masakazu Ogasawara ,  Takuma Yanagisawa ,  Katsuhiro Koike

发明人： Masakazu Ogasawara ,  Takuma Yanagisawa ,  Katsuhiro Koike

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0909 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1378 ,  G11B2007/0013

摘要： A pickup device includes an irradiation optical system including an object lens for focusing light flux on a track of a recording surface of an optical recording media having a plurality of recording layers stacked while a spacer layer is interposed between the recording layers to form a spot and a detection optical system including an photo detector having a plurality of light receiving parts for receiving returning light reflected from the spot through the object lens to perform photoelectric conversion. The pickup device controls a position of the object leans according to an electrical signal calculated from outputs of the light receiving parts. The pickup device further includes an astigmatic device for providing astigmatism to the returning light directed to the light receiving parts and a division device, having divisional regions divided by a division line extending in an astigmatic direction about an optical axis of the returning light, for dividing the returning light having the astigmatism into a plurality of partial light fluxes divided for the respective divisional regions along the optical axis of returning light. The neighboring divisional regions provide the partial light fluxes with an optical action so that interference between the corresponding partial light fluxes does not occur on the light receiving parts.

摘要翻译： 拾取装置包括：照射光学系统，包括用于将光束聚焦在具有堆叠的多个记录层的光学记录介质的记录表面的轨道上的物镜，同时隔离层插入在记录层之间以形成点， 一种检测光学系统，包括具有多个光接收部分的光检测器，用于接收通过物镜从该点反射的返回光，以执行光电转换。 拾取装置根据从光接收部分的输出计算的电信号来控制物体倾斜的位置。 拾取装置还包括用于向指向光接收部分的返回光提供像散的像散装置和分割装置，该分割装置具有被围绕返回光的光轴沿像散方向延伸的分割线划分的分割区域，用于分割 将具有像散的返回光分离成沿着返回光的光轴分割成各分区的多个部分光束。 相邻分割区域提供具有光学作用的部分光束，使得在光接收部分上不发生对应的部分光束之间的干涉。

公开(公告)号：US20070183296A1

公开(公告)日：2007-08-09

申请号：US10588844

申请日：2005-01-14

申请人： Katsuhiro Koike

发明人： Katsuhiro Koike

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/1275 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical element (10) includes a spherical aberration correction hologram (14) and a color aberration correction hologram (15). For a first laser light requiring the greatest valid diameter, no affect is given to the wave front in either of the aberration correction holograms. However, for a second laser light requiring the second greatest valid diameter, the valid diameter is narrowed down by the spherical aberration correction hologram (14). For a third laser light requiring the smallest valid diameter, the valid diameter is narrowed down to a predetermined amount by the diffusion light coming and the spherical aberration correction hologram (14) and further the valid diameter is narrowed down by the selective diffraction of the light flux incident in the annular area B of the color aberration correction hologram (15) and its diffusion.

摘要翻译： 光学元件（10）包括球面像差校正全息图（14）和色差校正全息图（15）。 对于需要最大有效直径的第一激光，在任何一个像差校正全息图中都不影响波前。 然而，对于需要第二最大有效直径的第二激光，有效直径被球面像差校正全息图（14）缩小。 对于需要最小有效直径的第三激光，有效直径通过扩散光和球面像差校正全息图（14）变窄到预定量，并且有效直径通过光的选择性衍射而变窄 入射在色差校正全息图（15）的环形区域B中的磁通及其扩散。

公开(公告)号：US6134055A

公开(公告)日：2000-10-17

申请号：US280719

申请日：1999-03-30

申请人： Katsuhiro Koike

发明人： Katsuhiro Koike

IPC分类号： G02B13/00 ,  G02B3/08 ,  G02B13/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G11B7/1367 ,  G11B7/13922 ,  G11B2007/0006

摘要： An objective lens for condensing a light beam, has at least one of annular grooves and ridges producing a phase difference. Each of the annular groove and ridge is formed concentrically on at least one of an incident surface which said light beam is introduced, and an emission surface which said light beam is emitted.

摘要翻译： 用于冷凝光束的物镜具有产生相位差的环形槽和脊中的至少一个。 环形槽和脊中的每一个同心地形成在所述光束被引入的入射表面和所述光束被发射的发射表面中的至少一个上。

公开(公告)号：US08004951B2

公开(公告)日：2011-08-23

申请号：US12307853

申请日：2007-07-13

申请人： Masakazu Ogasawara ,  Takuma Yanagisawa ,  Katsuhiro Koike

发明人： Masakazu Ogasawara ,  Takuma Yanagisawa ,  Katsuhiro Koike

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/0909 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1378 ,  G11B2007/0013

摘要： A pickup device includes an irradiation optical system including an object lens for focusing light flux on a track of a recording surface of an optical recording media having a plurality of recording layers stacked while a spacer layer is interposed between the recording layers to form a spot and a detection optical system including an photo detector having a plurality of light receiving parts for receiving returning light reflected from the spot through the object lens to perform photoelectric conversion. The pickup device controls a position of the object leans according to an electrical signal calculated from outputs of the light receiving parts. The pickup device further includes an astigmatic device for providing astigmatism to the returning light directed to the light receiving parts and a division device, having divisional regions divided by a division line extending in an astigmatic direction about an optical axis of the returning light, for dividing the returning light having the astigmatism into a plurality of partial light fluxes divided for the respective divisional regions along the optical axis of returning light. The neighboring divisional regions provide the partial light fluxes with an optical action so that interference between the corresponding partial light fluxes does not occur on the light receiving parts.

摘要翻译： 拾取装置包括：照射光学系统，包括用于将光束聚焦在具有堆叠的多个记录层的光学记录介质的记录表面的轨道上的物镜，同时隔离层插入在记录层之间以形成点， 一种检测光学系统，包括具有多个光接收部分的光检测器，用于接收通过物镜从该点反射的返回光，以执行光电转换。 拾取装置根据从光接收部分的输出计算的电信号来控制物体倾斜的位置。 拾取装置还包括用于向指向光接收部分的返回光提供像散的像散装置和分割装置，该分割装置具有被围绕返回光的光轴沿像散方向延伸的分割线划分的分割区域，用于分割 将具有像散的返回光分离成沿着返回光的光轴分割成各分区的多个部分光束。 相邻分割区域提供具有光学作用的部分光束，使得在光接收部分上不发生对应的部分光束之间的干涉。

公开(公告)号：US20110108430A1

公开(公告)日：2011-05-12

申请号：US12590684

申请日：2009-11-12

申请人： Kazuyuki Shinozaki ,  Yusaku Tazono ,  Katsuhiro Koike

发明人： Kazuyuki Shinozaki ,  Yusaku Tazono ,  Katsuhiro Koike

IPC分类号： C25D3/22 ,  C25D17/02

CPC分类号： C25D5/36 ,  C25D3/22 ,  C25D5/48 ,  C25D17/10 ,  C25D17/12

摘要： A galvanization system comprising an alkaline galvanization bath, a positive electrode, and a negative electrode is provided. The alkaline galvanization bath comprises galvanizing solution including about 7 to about 60 g/l of Zn, about 70 to about 200 g/l of alkali hydroxide and about 0.01 to about 5 g/l of additives. The positive electrode is insoluble in the galvanizing solution, having an opposed surface to an object which is supposed to be set in the alkaline galvanization bath and galvanized. The opposed surface of the positive electrode is formed in a rectangular pattern having a side equal to or less than 30 mm or in a circular pattern having a diameter equal to or less than 30 mm. The galvanization system can produce a galvanization membrane of excellent appearance.

摘要翻译： 提供了包括碱性镀锌浴，正极和负极的镀锌系统。 碱性镀锌浴包括镀锌溶液，其包括约7至约60g / l的Zn，约70至约200g / l的碱金属氢氧化物和约0.01至约5g / l的添加剂。 该正电极不溶于镀锌液，其具有与被设置在碱性镀锌浴中并进行镀锌的物体相对的表面。 正极的相对表面形成为具有等于或小于30mm的边的矩形图案或直径等于或小于30mm的圆形图案。 镀锌系统可以生产外观优异的镀锌膜。

公开(公告)号：US07227704B2

公开(公告)日：2007-06-05

申请号：US11246640

申请日：2005-10-11

申请人： Katsuhiro Koike

发明人： Katsuhiro Koike

IPC分类号： G02B13/18 ,  G02B3/02 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G02B5/188 ,  G02B27/0037 ,  G02B27/4238 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An objective lens module includes a light-converging lens that is coaxially disposed with respect to an optical axis of first laser light having a first wavelength, and a transmission-type diffractive optical element that is coaxially disposed to cause diffracted light of first laser light to be incident on the light-converging lens. The diffractive optical element has an incident surface and an emergent surface, and first, second, and third regions that are provided on at least of the incident surface and the emergent surface in the vicinity of the optical axis, and are sequentially defined according to different radius distances from the optical axis to have different diffraction gratings of different diffraction angles, respectively. The first region diffracts odd-order diffracted light of first laser light to the light-converging lens, the second region diffracts even-order diffracted light of first laser light to the light-converging lens, and the third region diffracts even-order or zero-order diffracted light of first laser light to the light-converging lens, such that the light-converging lens converges diffracted light from the first, second, and third regions with a predetermined numerical aperture.

摘要翻译： 物镜模块包括相对于具有第一波长的第一激光的光轴同轴设置的聚光透镜和同轴设置的透射型衍射光学元件，以使第一激光的衍射光到 入射在聚光透镜上。 衍射光学元件具有入射表面和出射表面，以及设置在光轴附近的至少入射表面和出射表面上的第一，第二和第三区域，并且根据不同的顺序限定 距离光轴的半径距离分别具有不同衍射角的不同衍射光栅。 第一区域将第一激光的奇数级衍射光衍射到会聚透镜，第二区域将第一激光的偶次衍射光衍射到聚光透镜，第三区域衍射为偶数或零 第一激光的衍射光到聚光透镜，使得聚光透镜以预定的数值孔径会聚来自第一，第二和第三区域的衍射光。