公开(公告)号：US07466642B2

公开(公告)日：2008-12-16

申请号：US10511867

申请日：2003-04-18

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其通过第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达式： 描述=“在线公式”end =“lead”？> 380 nm <=（n-1）xd <= 420 nm <？in-line-formula description =“In-line Formulas”end =“tail”？ >其中n是衬底在400nm波长处的折射率，d（nm） ）是每个凹槽的每个步骤的深度，并且其中凹槽以深度d和深度2d的两个步骤形成。

公开(公告)号：US07693026B2

公开(公告)日：2010-04-06

申请号：US12271161

申请日：2008-11-14

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其传播第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达：380nm和nlE;（n-1） ）×d＆nlE; 420nm，其中n是衬底在400nm波长处的折射率，d（nm）是每个步长的槽的深度，并且其中沟槽形成为深度的两个步骤 d和深度2d。

公开(公告)号：US07864650B2

公开(公告)日：2011-01-04

申请号：US12705153

申请日：2010-02-12

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其传播第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达：380nm和nlE;（n-1） ）×d＆nlE; 420nm，其中n是衬底在400nm波长处的折射率，d（nm）是每个步长的槽的深度，并且其中沟槽形成为深度的两个步骤 d和深度2d。

公开(公告)号：US20050237900A1

公开(公告)日：2005-10-27

申请号：US10511867

申请日：2003-04-18

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/1353 ,  G02B5/18 ,  G02B5/32 ,  G11B7/00 ,  G11B7/085 ,  G11B7/135

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其通过第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达式： 描述=“在线公式”end =“lead”？> 380 nm <=（n-1）xd <= 420 nm <？in-line-formula description =“In-line Formulas”end =“tail”？ >，其中n是基底在波长处的折射率 400nm，并且d（nm）是凹槽的每个步骤的深度，并且其中凹槽以深度d和深度2d的两个步骤形成。

公开(公告)号：US06967916B2

公开(公告)日：2005-11-22

申请号：US09975396

申请日：2001-10-10

申请人： Kousei Sano ,  Shin-ichi Kadowaki ,  Yoshiaki Komma ,  Seiji Nishino ,  Katsuhiko Yasuda ,  Akihiro Yasuda

发明人： Kousei Sano ,  Shin-ichi Kadowaki ,  Yoshiaki Komma ,  Seiji Nishino ,  Katsuhiko Yasuda ,  Akihiro Yasuda

IPC分类号： G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0909 ,  G11B7/131 ,  G11B7/1378 ,  G11B7/13927

摘要： An optical head apparatus capable of stably obtaining a detection signal of spherical aberration even with a high density optical disk. A spherical aberration error signal is obtained by: dividing the returning light from the optical disk into a transmitted light and a diffracted light; reproducing information with the transmitted light having a larger amount of light while dividing the diffracted light having a small amount of light into two regions, i.e., region near the optical axis and a region distant from the optical axis; determining amounts of focus deviation in respective regions as focus error signals; and taking the difference signal therebetween. Thus, it is possible to detect the amount of spherical aberration with the SN ratio of the information reproducing signal kept at high level.

摘要翻译： 即使使用高密度光盘也能够稳定地获得球面像差的检测信号的光学头装置。 通过以下方式获得球面像差误差信号：将来自光盘的返回光分成透射光和衍射光; 将具有较大光量的透射光再现信息，同时将具有少量光的衍射光分成两个区域，即靠近光轴的区域和远离光轴的区域; 确定各个区域中的聚焦偏差量作为聚焦误差信号; 并在其间取差分信号。 因此，可以以保持在高电平的信息再现信号的SN比来检测球面像差的量。

公开(公告)号：US07283435B2

公开(公告)日：2007-10-16

申请号：US10481206

申请日：2002-07-04

申请人： Yuuichi Kuze ,  Kenji Fujiune ,  Takashi Kishimoto ,  Shin-ichi Yamada ,  Katsuya Watanabe ,  Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano

发明人： Yuuichi Kuze ,  Kenji Fujiune ,  Takashi Kishimoto ,  Shin-ichi Yamada ,  Katsuya Watanabe ,  Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano

IPC分类号： G11B7/00

CPC分类号： G11B7/1378 ,  G11B7/08511 ,  G11B7/0908 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/1369 ,  G11B7/1381 ,  G11B7/13927 ,  G11B2007/0006 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical disc device of the present invention includes spherical aberration changing means for changing spherical aberration occurring on a converging position of a light beam converged by a lens, an actuator for moving the spherical aberration changing means in a relatively precise manner, and an actuator for moving the spherical aberration changing means in a relatively rough manner. The optical disc device drives a second actuator and a third actuator based on a signal of spherical aberration detecting means and performs control so that spherical aberration is almost 0. The third actuator moves the spherical aberration changing means based on a direct current component included in a signal of the spherical aberration detecting means, and the second actuator moves the spherical aberration changing means based on an alternating current component included in the signal of the spherical aberration detecting means.

摘要翻译： 本发明的光盘装置包括球面像差改变装置，用于改变在由透镜会聚的光束的会聚位置处产生的球面像差，用于相对精确地移动球面像差改变装置的致动器和用于 以相对粗糙的方式移动球面像差改变装置。 光盘装置基于球面像差检测装置的信号驱动第二致动器和第三致动器，并执行控制，使得球面像差几乎为0.第三致动器基于包括在球面像差检测装置中的直流分量来移动球面像差改变装置 信号，并且第二致动器基于球面像差检测装置的信号中包括的交流分量来移动球面像差改变装置。

公开(公告)号：US07277365B2

公开(公告)日：2007-10-02

申请号：US10289685

申请日：2002-11-06

申请人： Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Yuuichi Kuze

发明人： Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Yuuichi Kuze

IPC分类号： G11B7/095

CPC分类号： G11B7/0943 ,  G11B7/0908 ,  G11B7/094 ,  G11B7/0945 ,  G11B7/1369 ,  G11B7/1392 ,  G11B7/13925

摘要： An optical information processing apparatus includes: an optical head for irradiating an optical information recording medium with light, converting the light reflected by the optical information recording medium into a head signal and outputting the head signal; a signal quality index detector for detecting a signal quality index representing quality of the head signal on the basis of the head signal; and a two-dimensional probe for varying the focal position and the spherical aberration of the light radiated onto the optical information recording medium so as to search for a focal position and a spherical aberration that optimize the signal quality index detected by the signal quality index detector.

摘要翻译： 光学信息处理设备包括：光头，用于用光照射光信息记录介质，将由光信息记录介质反射的光转换成头信号并输出​​头信号; 信号质量指标检测器，用于根据头信号检测表示头信号质量的信号质量指标; 以及用于改变照射到光学信息记录介质上的光的焦点位置和球面像差的二维探头，以便搜索优化由信号质量指标检测器检测到的信号质量指数的焦点位置和球面像差 。

公开(公告)号：USRE43126E1

公开(公告)日：2012-01-24

申请号：US11529689

申请日：2006-09-28

申请人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

发明人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

IPC分类号： G11G7/00

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical pickup head is provided with a light source, a diffracting means for creating a plurality of diffracted beams, a converging means for focusing the diffracted beams onto an optical storage medium, a beam branching means for branching the plurality of beams reflected by the optical storage medium, and an optical detecting means for outputting a signal corresponding to the amount of light of the received beams. The optical detecting means has main beam light receiving portions and sub-beam light receiving portions. The amount of light of the first or higher order diffracted beams when they are substantially focused on and reflected by a focus plane of the plurality of information recording planes is equal to or greater than the amount of light of the zero order diffracted beam when it is reflected without focusing by a non-focus plane other then the focus plane of the plurality of information recording planes. The invention provides an optical pickup head where offset is not generated in the TE signals even during tracking with the objective lens when a two-layered disk is used.

摘要翻译： 光拾取头设置有光源，用于产生多个衍射光束的衍射装置，用于将衍射光束聚焦到光存储介质上的会聚装置，用于将由光学器件反射的多个光束分支的光束分支装置 存储介质，以及光检测装置，用于输出对应于接收光束的光量的信号。 光检测装置具有主光束光接收部分和副光束光接收部分。 当它们基本上聚焦在多个信息记录面的聚焦平面上并被其反射时，第一或更高阶衍射光束的光量等于或大于零级衍射光束的光量 反射而不聚焦在多个信息记录平面的焦点平面之外的非聚焦平面。 本发明提供了一种光拾取头，即使在使用双层盘的情况下在物镜进行跟踪期间，也不会在TE信号中产生偏移。

公开(公告)号：US07539089B2

公开(公告)日：2009-05-26

申请号：US11736763

申请日：2007-04-18

申请人： Yuuichi Kuze ,  Kenji Fujiune ,  Takashi Kishimoto ,  Shin-ichi Yamada ,  Katsuya Watanabe ,  Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano

发明人： Yuuichi Kuze ,  Kenji Fujiune ,  Takashi Kishimoto ,  Shin-ichi Yamada ,  Katsuya Watanabe ,  Akihiro Yasuda ,  Shin-ichi Kadowaki ,  Kousei Sano

IPC分类号： G11B7/00

CPC分类号： G11B7/1378 ,  G11B7/08511 ,  G11B7/0908 ,  G11B7/0941 ,  G11B7/0943 ,  G11B7/0948 ,  G11B7/131 ,  G11B7/1369 ,  G11B7/1381 ,  G11B7/13927 ,  G11B2007/0006 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical disc device of the present invention includes spherical aberration changing means for changing spherical aberration occurring on a converging position of a light beam converged by a lens, an actuator for moving the spherical aberration changing means in a relatively precise manner, and an actuator for moving the spherical aberration changing means in a relatively rough manner. The optical disc device drives a second actuator and a third actuator based on a signal of spherical aberration detecting means and performs control so that spherical aberration is almost 0. The third actuator moves the spherical aberration changing means based on a direct current component included in a signal of the spherical aberration detecting means, and the second actuator moves the spherical aberration changing means based on an alternating current component included in the signal of the spherical aberration detecting means.

摘要翻译： 本发明的光盘装置包括球面像差改变装置，用于改变在由透镜会聚的光束的会聚位置处产生的球面像差，用于相对精确地移动球面像差改变装置的致动器和用于 以相对粗糙的方式移动球面像差改变装置。 光盘装置基于球面像差检测装置的信号驱动第二致动器和第三致动器，并执行控制，使得球面像差几乎为0.第三致动器基于包括在球面像差检测装置中的直流分量来移动球面像差改变装置 信号，并且第二致动器基于球面像差检测装置的信号中包括的交流分量来移动球面像差改变装置。

公开(公告)号：US06798723B2

公开(公告)日：2004-09-28

申请号：US10163443

申请日：2002-06-04

申请人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

发明人： Hideki Hayashi ,  Sadao Mizuno ,  Daisuke Ogata ,  Shin-ichi Kadowaki ,  Kousei Sano ,  Jouji Anzai ,  Akihiro Yasuda

IPC分类号： G11B700

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/1353 ,  G11B7/13927 ,  G11B2007/0013

摘要： An optical pickup head is provided with a light source, a diffracting means for creating a plurality of diffracted beams, a converging means for focusing the diffracted beams onto an optical storage medium, a beam branching means for branching the plurality of beams reflected by the optical storage medium, and an optical detecting means for outputting a signal corresponding to the amount of light of the received beams. The optical detecting means has main beam light receiving portions and sub-beam light receiving portions. The amount of light of the first or higher order diffracted beams when they are substantially focused on and reflected by a focus plane of the plurality of information recording planes is equal to or greater than the amount of light of the zero order diffracted beam when it is reflected without focusing by a non-focus plane other then the focus plane of the plurality of information recording planes. The invention provides an optical pickup head where offset is not generated in the TE signals even during tracking with the objective lens when a two-layered disk is used.

摘要翻译： 光拾取头设置有光源，用于产生多个衍射光束的衍射装置，用于将衍射光束聚焦到光存储介质上的会聚装置，用于将由光学器件反射的多个光束分支的光束分支装置 存储介质，以及光检测装置，用于输出对应于接收光束的光量的信号。 光检测装置具有主光束光接收部分和副光束光接收部分。 当它们基本上聚焦在多个信息记录面的聚焦平面上并被其反射时，第一或更高阶衍射光束的光量等于或大于零级衍射光束的光量 反射而不聚焦在多个信息记录平面的焦点平面之外的非聚焦平面。 本发明提供了一种光拾取头，即使在使用双层盘的情况下在物镜进行跟踪期间，也不会在TE信号中产生偏移。