公开(公告)号：US07027378B2

公开(公告)日：2006-04-11

申请号：US10894907

申请日：2004-07-20

申请人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

发明人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/08511 ,  G11B7/1378 ,  G11B7/13925 ,  G11B7/13927 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.

公开(公告)号：US20060028927A1

公开(公告)日：2006-02-09

申请号：US11238272

申请日：2005-09-29

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US06549346B2

公开(公告)日：2003-04-15

申请号：US09982278

申请日：2001-10-17

申请人： Hidenori Wada ,  Keiichi Matsuzaki ,  Seiji Nishino ,  Tetsuo Saimi ,  Kenichi Kasazumi ,  Masanari Mohri

发明人： Hidenori Wada ,  Keiichi Matsuzaki ,  Seiji Nishino ,  Tetsuo Saimi ,  Kenichi Kasazumi ,  Masanari Mohri

IPC分类号： G02B702

CPC分类号： G11B7/22 ,  G02B7/021 ,  G02B7/025

摘要： An objective lens assembly includes: at least two groups of lenses having a common optical axis: and at least two lens holders for respectively holding the at least two groups of lenses, wherein each of the lens holders has an end face perpendicular to the optical axis, and the lens holders are positioned such that the end face of one of the lens holders faces the end face of the other lens holder, and a gap between these end faces is filled with an adhesive agent for adhering the lens holders to each other.

摘要翻译： 物镜组件包括：具有共同的光轴的至少两组透镜;以及用于分别保持至少两组透镜的至少两个透镜保持器，其中每个透镜保持器具有垂直于光轴的端面 并且透镜保持器定位成使得其中一个透镜保持器的端面面对另一个透镜保持器的端面，并且这些端面之间的间隙填充有用于将透镜保持器彼此粘合的粘合剂。

公开(公告)号：US5757754A

公开(公告)日：1998-05-26

申请号：US495137

申请日：1995-06-28

申请人： Hiroaki Yamamoto ,  Tetsuo Saimi ,  Seiji Nishino ,  Yoshiaki Komma ,  Hidenori Wada

发明人： Hiroaki Yamamoto ,  Tetsuo Saimi ,  Seiji Nishino ,  Yoshiaki Komma ,  Hidenori Wada

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0901 ,  G11B7/094 ,  G11B7/123 ,  G11B7/0912 ,  G11B7/0916

摘要： A light beam emitted from a semiconductor laser element is collimated by a collimating lens, and is applied to an optical disk through a polarizing holographic beam splitter, a .lambda./4 plate and an objective lens, a light beam reflected by the optical disk is applied to the polarizing holographic beam splitter and is diffracted. Diffracted light beams of +1st order and -1st order are applied to two photodetectors, and a focus error signal is obtained on the basis of the diffracted light beam of +1st order and a tracking error signal is obtained on the basis of the diffracted light beam of -1st order.

摘要翻译： 从半导体激光元件发射的光束被准直透镜准直，并通过偏振全息光束分离器，λ/ 4板和物镜施加到光盘上，施加由光盘反射的光束 到偏振全息分束器并被衍射。 + 1级和-1级的衍射光束被施加到两个光电检测器，并且基于+ 1阶的衍射光束获得聚焦误差信号，并且基于衍射光获得跟踪误差信号 光束为-1阶。

公开(公告)号：US20140010058A1

公开(公告)日：2014-01-09

申请号：US14005376

申请日：2012-04-11

申请人： Keiichi Matsuzaki ,  Kousei Sano ,  Hidenori Wada ,  Tatsuya Takaoka

发明人： Keiichi Matsuzaki ,  Kousei Sano ,  Hidenori Wada ,  Tatsuya Takaoka

IPC分类号： G11B27/36

CPC分类号： G11B27/36 ,  B82Y20/00 ,  G11B7/0908 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/1381 ,  G11B7/1387 ,  G11B2007/13727

摘要： An optical information device is provided with a first scattering medium (9), a second scattering medium (10), a third scattering medium (11); a diffraction element (4) which generates a plurality of light beams; an objective lens (6) which guides, to the first scattering medium (9) and to the third scattering medium (11) out of the first scattering medium (9), the second scattering medium (10), and the third scattering medium (11), two light beams out of the plurality of the light beams; and an arithmetic circuit (17) which detects a gap interval between the first scattering medium (9) and the third scattering medium (11), and an information medium (12), based on a change in an amount of reflected light from the first scattering medium (9) and from the third scattering medium (11).

摘要翻译： 光信息装置设置有第一散射介质（9），第二散射介质（10），第三散射介质（11）。 产生多个光束的衍射元件（4）; 从第一散射介质（9）向第一散射介质（9）和第三散射介质（11）引出第二散射介质（10）和第三散射介质（6）的物镜（6） 11），多个光束中的两个光束; 以及检测第一散射介质（9）和第三散射介质（11）之间的间隙的运算电路（17），以及基于来自第一散射介质（9）的反射光的变化的信息介质 散射介质（9）和第三散射介质（11）。

公开(公告)号：US08488431B2

公开(公告)日：2013-07-16

申请号：US13391110

申请日：2011-06-15

申请人： Hideki Nakata ,  Hidenori Wada

发明人： Hideki Nakata ,  Hidenori Wada

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B2007/0013

摘要： Provided are an optical head and an optical information device capable of inhibiting the temperature rise of a photodetector. An optical head (10) includes a semiconductor laser (101) which emits a luminous flux, an objective lens (105) which focuses the luminous flux emitted from the semiconductor laser (101) on the optical disk (21), and a photodetector (120) which detects the luminous flux reflected by the optical disk (21). The photodetector (120) includes a light receiving part (123) which receives the luminous flux reflected by the optical disk (21), a package (125) which covers the light receiving part (123), and a heat transfer adhesion layer (124) disposed between the package (125) and the light receiving part (123). The heat transfer adhesion layer (124) is formed in a region that is on the light receiving part (123) and includes a light path through which the luminous flux reflected by the optical disk (21) passes.

摘要翻译： 提供了能够抑制光电检测器的温度上升的光学头和光学信息装置。 光头（10）包括发射光束的半导体激光器（101），将从半导体激光器（101）发射的光束聚焦在光盘（21）上的物镜（105）和光电检测器 120），其检测由光盘（21）反射的光束。 光电检测器（120）包括：光接收部分（123），其接收由光盘（21）反射的光束;覆盖光接收部分（123）的封装（125）;以及传热粘附层 ）设置在所述封装（125）和所述光接收部（123）之间。 传热粘附层（124）形成在光接收部分（123）上的区域中，并且包括由光盘（21）反射的光束通过的光路。

公开(公告)号：US20120296057A1

公开(公告)日：2012-11-22

申请号：US13574281

申请日：2011-01-20

申请人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

发明人： Toshihiro Takaai ,  Shinichi Fujino ,  Hidenori Wada

IPC分类号： C08F20/06

CPC分类号： C08F6/008 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28047 ,  B01J2220/68 ,  C08F6/006 ,  C08F20/04 ,  C08F20/06 ,  C08J3/12 ,  C08J3/245 ,  C08J9/28 ,  C08J2300/14 ,  C08J2333/02 ,  C08L33/02

摘要： In a method for producing a water absorbent resin by drying a particulate hydrogel having a high solid content concentration (of 45% by weight or more, preferably 50% by weight or more, and more preferably 55% by weight or more), a method for efficient drying water absorbent resin having maintained/improved physical properties is provided.Disclosed is a method for producing a water absorbent resin, comprising: a polymerization step to polymerize an unsaturated monomer, and; a drying step to dry a particulate hydrogel crosslinked polymer, which is obtained by micronization of a hydrogel polymer during or after the polymerization and which has a solid content concentration of 45% by weight or more, wherein, an amount of a peroxide in the particulate hydrogel crosslinked polymer to be dried in the drying step is 1 to 100 ppm relative to the weight of the solid content of the particulate hydrogel crosslinked polymer, and a drying temperature of the particulate hydrogel crosslinked polymer in the drying step is 160° C. or more.

摘要翻译： 在通过干燥具有高固含量浓度（45重量％以上，优选50重量％以上，更优选55重量％以上）的颗粒状水凝胶制造吸水性树脂的方法中， 提供了具有保持/改善的物理性能的高效干燥吸水性树脂。 公开了一种吸水性树脂的制造方法，其特征在于，包括：使不饱和单体聚合的聚合工序; 干燥步骤，其干燥颗粒状水凝胶交联聚合物，其通过在聚合期间或之后微粒化水凝胶聚合物并且固体成分浓度为45重量％以上，其中颗粒中的过氧化物的量 在干燥步骤中要干燥的水凝胶交联聚合物相对于颗粒状水凝胶交联聚合物的固体含量的重量为1至100ppm，干燥步骤中颗粒状水凝胶交联聚合物的干燥温度为160℃，或 更多。

公开(公告)号：US08213288B2

公开(公告)日：2012-07-03

申请号：US12995274

申请日：2009-08-26

申请人： Osamu Kajino ,  Hidenori Wada ,  Haruhisa Yagi

发明人： Osamu Kajino ,  Hidenori Wada ,  Haruhisa Yagi

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  G11B7/0037

摘要： A deterioration of reproduction light is occurred by a laser drive current on which a high-frequency current is superimposed. The present invention, for example, is an optical information reproducing apparatus which irradiates a laser beam to an optical disc 1 and reads an information, the optical information reproducing apparatus includes a semiconductor laser 6 which generates the laser beam, a laser drive unit 7 which supplies a drive current on which a high-frequency current are superimposed to the semiconductor laser 6, a spindle motor 2 which drives the optical disc 1 and a control unit 5 which controls the laser drive unit 7 and the spindle motor 2, and the control unit 5 determines a parameter of the high-frequency current based on magnitude of a current on which the high-frequency current is to be superimposed.

摘要翻译： 通过重叠高频电流的激光驱动电流发生再现光的劣化。 本发明例如是将激光束照射到光盘1并读取信息的光信息重放装置，光信息重放装置包括产生激光束的半导体激光器6，激光驱动部7 向半导体激光器6提供高频电流的驱动电流，驱动光盘1的主轴电动机2和控制激光驱动部7和主轴电动机2的控制部5， 单元5基于要叠加高频电流的电流的大小来确定高频电流的参数。

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。