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：US20130083645A1

公开(公告)日：2013-04-04

申请号：US13702882

申请日：2011-11-09

申请人： Hidenori Wada ,  Kousei Sano ,  Keiichi Matsuzaki ,  Sadao Mizuno

发明人： Hidenori Wada ,  Kousei Sano ,  Keiichi Matsuzaki ,  Sadao Mizuno

IPC分类号： G11B7/13

CPC分类号： G11B7/13 ,  G11B7/0956 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/1387 ,  G11B2007/0013

摘要： An optical pickup, an inclination angle detection method, an optical information device, and an information processing device capable of reliably and accurately detecting a relative inclination angle between an end face of a solid immersion lens and a surface of an optical recording medium are provided. A convergence position modifying unit modifies convergence states of a first beam and a second beam according to layers of an optical recording medium, a first optical detector includes a first light receiving section which receives the converged first beam and a second light receiving section which receives the converged second beam, and the first optical detector detects a relative inclination angle between an end face of a solid immersion lens and a surface of the optical recording medium based on a difference in quantities of received light between the first light receiving section and the second light receiving section.

摘要翻译： 提供能够可靠且准确地检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度的光学拾取器，倾斜角度检测方法，光学信息装置和信息处理装置。 会聚位置修改单元根据光记录介质的层来修改第一光束和第二光束的会聚状态，第一光检测器包括接收会聚的第一光束的第一光接收部分和接收第一光接收部分的第二光接收部分， 会聚第二光束，并且第一光学检测器基于第一光接收部分和第二光线之间的接收光量的差异来检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度 接收部分。

公开(公告)号：US08228774B2

公开(公告)日：2012-07-24

申请号：US12559740

申请日：2009-09-15

申请人： Kousei Sano ,  Yoshiaki Komma ,  Yasumori Hino

发明人： Kousei Sano ,  Yoshiaki Komma ,  Yasumori Hino

IPC分类号： G11B7/242 ,  G11B3/70 ,  G11B7/24 ,  G11B7/00 ,  B32B3/02 ,  G01B11/28 ,  G01N21/55

CPC分类号： G11B7/0037 ,  G01B11/06 ,  G11B2007/0013

摘要： An optical information medium measurement method measures a degree of modulation in an optical information medium of a multilayered structure having a plurality of information layers. The method includes measuring the modulation degree of each layer of the optical information medium, obtaining a thickness between layers of the optical information medium, obtaining a reflectance of each layer of the optical information medium, and converting the modulation degree of each layer. The modulation degree is measured based on a value indicative of the thickness between layers, and a value indicative of the reflectance of each layer.

摘要翻译： 光信息介质测量方法测量具有多个信息层的多层结构的光信息介质中的调制度。 该方法包括测量光信息介质的各层的调制度，获得光信息介质的层之间的厚度，获得光信息介质的各层的反射率，以及转换各层的调制度。 基于表示层之间的厚度的值和表示各层的反射率的值来测量调制度。

公开(公告)号：US08068403B2

公开(公告)日：2011-11-29

申请号：US12090144

申请日：2006-10-13

申请人： Takayuki Nagata ,  Joji Anzai ,  Hideki Aikoh ,  Eishin Mori ,  Kousei Sano ,  Yoshiaki Komma ,  Akihiro Arai

发明人： Takayuki Nagata ,  Joji Anzai ,  Hideki Aikoh ,  Eishin Mori ,  Kousei Sano ,  Yoshiaki Komma ,  Akihiro Arai

IPC分类号： G11B7/00

CPC分类号： G11B7/133 ,  G11B7/0908 ,  G11B7/1381 ,  G11B2007/0013

摘要： To provide an optical head to produce good servo and read signals by reducing the influence of interference by light reflected from a non-read layer of a multilayer optical disc.The head includes: a first optical system for converging light from a light source on a first or second storage layer; a second optical system for receiving and transmitting light reflected from the first layer and stray light reflected from the second layer when the light is converged on the first layer; a photodetector; and a calculator. The photosensitive areas of the photodetector output signals representing intensities of the light incident there through the second system. The reflected and stray light incident on the second system interfere with each other, and the first and second groups of areas are arranged so as to be equally affected by a variation in intensity caused by the interference. The calculator calculates the difference between sum of a first group of signals supplied from a first group of areas and that of a second group of signals supplied from a second group of areas, thereby generating a focus error signal.

摘要翻译： 通过减少由多层光盘的非读取层反射的光的干扰的影响来提供光学头来产生良好的伺服和读取信号。 头部包括：第一光学系统，用于将来自光源的光聚焦在第一或第二存储层上; 第二光学系统，用于当所述光会聚在所述第一层上时，接收和发射从所述第一层反射的光和从所述第二层反射的杂散光; 光检测器; 和一个计算器。 光电检测器的光敏区域输出表示通过第二系统入射到那里的光的强度的信号。 入射在第二系统上的反射和杂散光彼此干涉，并且第一和第二组区域被布置成等同地受到由干涉引起的强度变化的影响。 计算器计算从第一组区域提供的第一组信号和从第二组区域提供的第二组信号的第一组信号的和之间的差，从而产生聚焦误差信号。

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：US20100208568A1

公开(公告)日：2010-08-19

申请号：US12680917

申请日：2008-10-01

申请人： Kousei Sano ,  Hirotaka Ueno

发明人： Kousei Sano ,  Hirotaka Ueno

IPC分类号： G11B7/135

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

摘要： An optical head device includes a diffraction grating which diffracts a part of the light beam which is selectively emitted from a semiconductor laser having two luminous points and is divided along a tangential direction of the track of the optical disk, a relationship of arrangement of the second and third regions corresponds to a relationship of the optical axes of the first and second light beams on the diffraction grating, the second region is located at a position crossing an optical axis of the first light beam, a phase difference between phases of the first and third regions is 180°, a phase difference between phases of the third and fourth regions is 180°, and the third region has a width which is not larger than amount of a position deviation of ±first-order diffracted light of the second light beam from zeroth-order diffracted light.

摘要翻译： 光头装置包括：衍射光栅，该衍射光栅衍射自具有两个发光点的半导体激光器选择性地发射并沿着光盘的轨道的切线方向分割的光束的一部分，第二 并且第三区域对应于衍射光栅上的第一和第二光束的光轴的关系，第二区域位于与第一光束的光轴交叉的位置，第一和第二光束的相位之间的相位差 第三区域为180°，第三区域和第四区域的相位之间的相位差为180°，第三区域的宽度不大于第二光束的±一级衍射光的位置偏移量 从零级衍射光。

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：US20100128590A1

公开(公告)日：2010-05-27

申请号：US12559766

申请日：2009-09-15

申请人： Kousei SANO ,  Yoshiaki Komma ,  Yasumori Hino

发明人： Kousei SANO ,  Yoshiaki Komma ,  Yasumori Hino

IPC分类号： G11B7/00 ,  B32B3/02 ,  G01B11/06 ,  G01N21/55

CPC分类号： G11B7/268 ,  G11B7/00375 ,  G11B2007/0013

摘要： An optical information medium measurement method of the present invention, for measuring a degree of modulation in an optical information medium of a multilayered structure having a plurality of information layers, includes a first step of measuring the modulation degree of each layer of the optical information medium, by use of a measurement optical system, a second step of obtaining a thickness between layers of the optical information medium, a third step of obtaining a reflectance of each layer of the optical information medium, and a fourth step of converting the modulation degree of each layer, the modulation degree being measured in the first step, into a modulation degree at a reference optical system differing from the measurement optical system, based on a value indicative of the thickness between layers, the thickness being obtained in the second step, and a value indicative of the reflectance of each layer, the reflectance being obtained in the third step.

摘要翻译： 本发明的光信息介质测量方法，用于测量具有多个信息层的多层结构的光信息介质中的调制度，包括测量光信息介质的每一层的调制度的第一步骤 通过使用测量光学系统，获得光学信息介质的层之间的厚度的第二步骤，获得光学信息介质的每一层的反射率的第三步骤和转换光信息介质的调制度的第四步骤 基于表示层之间的厚度的值，在第二步骤中获得的厚度和在第一步骤中获得的厚度，将在第一步骤中测量的调制度调整为与测量光学系统不同的参考光学系统的调制度，以及 表示每层的反射率的值，第三步骤中得到的反射率。

公开(公告)号：US20090257340A1

公开(公告)日：2009-10-15

申请号：US12090144

申请日：2006-10-13

申请人： Takayuki Nagata ,  Joji Anzai ,  Hideki Aikoh ,  Eishin Mori ,  Kousei Sano ,  Yoshiaki Komma ,  Akihiro Arai

发明人： Takayuki Nagata ,  Joji Anzai ,  Hideki Aikoh ,  Eishin Mori ,  Kousei Sano ,  Yoshiaki Komma ,  Akihiro Arai

IPC分类号： G11B7/00

CPC分类号： G11B7/133 ,  G11B7/0908 ,  G11B7/1381 ,  G11B2007/0013

摘要： To provide an optical head to produce good servo and read signals by reducing the influence of interference by light reflected from a non-read layer of a multilayer optical disc.The head includes: a first optical system for converging light from a light source on a first or second storage layer; a second optical system for receiving and transmitting light reflected from the first layer and stray light reflected from the second layer when the light is converged on the first layer; a photodetector; and a calculator. The photosensitive areas of the photodetector output signals representing intensities of the light incident there through the second system. The reflected and stray light incident on the second system interfere with each other, and the first and second groups of areas are arranged so as to be equally affected by a variation in intensity caused by the interference. The calculator calculates the difference between sum of a first group of signals supplied from a first group of areas and that of a second group of signals supplied from a second group of areas, thereby generating a focus error signal.

摘要翻译： 通过减少由多层光盘的非读取层反射的光的干扰的影响来提供光学头来产生良好的伺服和读取信号。 头部包括：第一光学系统，用于将来自光源的光聚焦在第一或第二存储层上; 第二光学系统，用于当所述光会聚在所述第一层上时，接收和发射从所述第一层反射的光和从所述第二层反射的杂散光; 光检测器; 和一个计算器。 光电检测器的光敏区域输出表示通过第二系统入射到那里的光的强度的信号。 入射在第二系统上的反射和杂散光彼此干涉，并且第一和第二组区域被布置成等同地受到由干涉引起的强度变化的影响。 计算器计算从第一组区域提供的第一组信号和从第二组区域提供的第二组信号的第一组信号的和之间的差，从而产生聚焦误差信号。