公开(公告)号：US20100142356A1

公开(公告)日：2010-06-10

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： G11B7/135

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: 380nm≦(n−1)×d≦420nm 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（ 其中所述光学元件（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），其中，所述光学元件（28）是通过第一波长的光并衍射第二和第三波长的光， ×d＆nlE; 420nm，其中n是基板在400nm波长处的折射率，d（nm）是每个步长的凹槽的深度，并且其中凹槽以深度d和d的两个步骤形成， 深度2d。

公开(公告)号：US20090073823A1

公开(公告)日：2009-03-19

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：US20100142348A1

公开(公告)日：2010-06-10

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： G11B7/00

CPC分类号： G11B7/0037 ,  G01B11/06 ,  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：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：US20100208563A1

公开(公告)日：2010-08-19

申请号：US12634042

申请日：2009-12-09

申请人： Masahito NAKAO ,  Yasumori HINO ,  Yoshiaki KOMMA ,  Fumitomo YAMASAKI ,  Kousei SANO

发明人： Masahito NAKAO ,  Yasumori HINO ,  Yoshiaki KOMMA ,  Fumitomo YAMASAKI ,  Kousei SANO

IPC分类号： G11B7/20 ,  G11B7/26

CPC分类号： G11B7/1267 ,  G11B7/005 ,  G11B7/24038 ,  G11B7/26

摘要： An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a).

摘要翻译： 根据本发明的信息记录介质包括至少三个信息记录层。 如果从信息记录层L（n）读取信息中的激光束的读出功率被Pw（n）识别，并且如果从信息记录层L（n + a）读取信息中的激光束的读出功率 ）由Pw（n + a）识别，则信息记录层之间的基底厚度被确定为当信息记录层L（n + a）被激光束照射时具有读出功率的光的强度 当信息记录层L（n + a）被具有读出功率Pw（n + a）的激光束照射时，Pw（n）变得等于或低于光的光。

公开(公告)号：US20070189131A1

公开(公告)日：2007-08-16

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。