公开(公告)号：US20060120251A1

公开(公告)日：2006-06-08

申请号：US10532602

申请日：2004-08-10

申请人： Katsuya Sakamoto ,  Junji Hashimura

发明人： Katsuya Sakamoto ,  Junji Hashimura

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G02B7/028 ,  G02B27/0966 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/13727

摘要： The present invention has a beam shaping element for converting the light source 11 into a light flux whose emitting angle is almost equal and for projecting it, and a generation amount of the astigmatism generated by the temperature change is suppressed by a linear expansion of the beam shaping element.

摘要翻译： 本发明具有用于将光源11转换为发射角几乎相等并用于投射光束的光束成形元件，并且通过光束的线性膨胀来抑制由温度变化产生的像散的产生量 成型元件。

公开(公告)号：US07126902B2

公开(公告)日：2006-10-24

申请号：US10223631

申请日：2002-08-20

申请人： Katsuya Sakamoto ,  Kohei Ota ,  Yuichi Atarashi

发明人： Katsuya Sakamoto ,  Kohei Ota ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/13922 ,  G11B7/127 ,  G11B7/1374 ,  G11B2007/0006

摘要： An objective lens for use in an optical pickup apparatus has a diffractive optical surface. A first light flux having a first wavelength of λ1 is converged as a first number diffraction order diffracted-ray other than the zero-th order diffracted-ray onto an information recording plane of the first optical information recording medium having a thinner protective substrate t1 by the diffractive optical surface and a second light flux having a second wavelength of λ2 (λ1

摘要翻译： 用于光学拾取装置的物镜具有衍射光学表面。 具有λ1的第一波长的第一光束作为除零级衍射光之外的第一数量级衍射级衍射光束会聚在具有较薄保护衬底t的第一光学信息记录介质的信息记录平面上 通过衍射光学表面和具有λ2（λ1λ2）的第二波长的第二光束作为除零级衍射光之外的第二数量衍射级衍射光会聚在信息记录面上 通过衍射光学表面具有较厚保护衬底t 2（t 1

公开(公告)号：US07075880B2

公开(公告)日：2006-07-11

申请号：US10144027

申请日：2002-05-14

申请人： Koji Honda ,  Katsuya Sakamoto ,  Yuichi Atarashi ,  Kohei Ota

发明人： Koji Honda ,  Katsuya Sakamoto ,  Yuichi Atarashi ,  Kohei Ota

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus conducts recording or reproducing information for an information recording plane of a first or second optical information recording medium and comprises a first light source and a second light source mounted on a same base board; a converging optical system; and a coupling lens. The converging optical system comprises an objective lens to converge a first or second light flux having passed through the coupling lens on a first or second optical information recording medium; and a diffractive structure to change a focal length in accordance with a wavelength of a light flux emitted from the first light source or the second light source.

公开(公告)号：US20050007931A1

公开(公告)日：2005-01-13

申请号：US10882617

申请日：2004-07-01

申请人： Katsuya Sakamoto ,  Kiyoshi Yamashita ,  Kohei Ota ,  Yuichi Atarashi ,  Hidekazu Totsuka

发明人： Katsuya Sakamoto ,  Kiyoshi Yamashita ,  Kohei Ota ,  Yuichi Atarashi ,  Hidekazu Totsuka

IPC分类号： G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1378 ,  G11B7/1275 ,  G11B7/1376 ,  G11B7/1398 ,  G11B2007/0006

摘要： An optical pickup apparatus having a light source unit including a plurality of light emitting, a beam regulating element to regulate a light flux emitted from the light source unit so that the an angle of divergence of the light flux emitted from the light source unit is changed to a first direction and/or a second direction, wherein a distance from each of the light emitting element to a surface of a protective layer that protects the recording surface is constant regardless a type of the optical information recording medium.

摘要翻译： 一种具有包括多个发光的光源单元的光学拾取装置，用于调节从光源单元发射的光束的光束调节元件，使得从光源单元发射的光束的发散角度改变 到第一方向和/或第二方向，其中从每个发光元件到保护记录表面的保护层的表面的距离是恒定的，而与所述光学信息记录介质的类型无关。

公开(公告)号：US07872959B2

公开(公告)日：2011-01-18

申请号：US12326456

申请日：2008-12-02

申请人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a diffraction order of a diffracted ray having a maximum light amount among diffracted rays of each of first, second and third light flux having wavelength λ1, λ2 and λ3 when respective light flux comes to be incident into the diffractive structure respectively, the following formulas are satisfied: |n1|>|n2|, and |n1|>|n3|, and the hybrid objective lens converges a n1-th, n2-th and n3-th order diffracted ray of the first, second and third light flux onto an information recording plane of each of the first, second ant third optical information recording medium respectively so as to form an appropriate wavefront within respective prescribed necessary image side numerical apertures.

摘要翻译： 混合物镜具有在其至少一个光学表面上由多个同轴环形区域构成的折射透镜和衍射光学元件。 当n1，n2和n3分别是当各个光束入射到第一，第二和第三光束时具有波长λ1，λ2和λ3的每个的第一，第二和第三光束的衍射光中具有最大光量的衍射光线的衍射级数 衍射结构分别满足下列公式：| n1 |> | n2 |和| n1 |> | n3 |，并且混合物镜会聚第n1，第n2和第n3阶衍射光线 第一，第二和第三光束分别到达第一，第二蚂蚁第三光学信息记录介质的信息记录平面，以便在各个规定的必要图像侧数值孔内形成适当的波前。

公开(公告)号：US20090080321A1

公开(公告)日：2009-03-26

申请号：US12326456

申请日：2008-12-02

申请人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a diffraction order of a diffracted ray having a maximum light amount among diffracted rays of each of first, second and third light flux having wavelength λ1, λ2 and λ3 when respective light flux comes to be incident into the diffractive structure respectively, the following formulas are satisfied: |n1|>|n2|, and |n1|>|n3|, and the hybrid objective lens converges a n1-th, n2-th and n3-th order diffracted ray of the first, second and third light flux onto an information recording plane of each of the first, second ant third optical information recording medium respectively so as to form an appropriate wavefront within respective prescribed necessary image side numerical apertures.

摘要翻译： 混合物镜具有在其至少一个光学表面上由多个同轴环形区域构成的折射透镜和衍射光学元件。 当n1，n2和n3分别是当各个光束入射到第一，第二和第三光束时具有波长λ1，λ2和λ3的第一，第二和第三光束中的每一个的衍射光线中具有最大光量的衍射光线的衍射级数 衍射结构分别满足下列公式：<？in-line-formula description =“In-line formula”end =“lead”？> | n1 |> | n2 |和| n1 |> | n3 |和 混合物镜收敛第一，第二和第三光的第n1，第n2和第n3阶衍射光线， 分别在第一，第二蚂蚁第三光学信息记录介质的信息记录平面上形成适当的波前，以在相应的规定的必要的图像侧数值孔内形成适当的波前。

公开(公告)号：US07206276B2

公开(公告)日：2007-04-17

申请号：US10266114

申请日：2002-10-08

申请人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a diffraction order of a diffracted ray having a maximum light amount among diffracted rays of each of first, second and third light flux having wavelength λ1, λ2 and λ3 when respective light flux comes to be incident into the diffractive structure respectively, the following formulas are satisfied: |n1|>|n2|, and |n1|>|n3|, and the hybrid objective lens converges a n1-th, n2-th and n3-th order diffracted ray of the first, second and third light flux onto an information recording plane of each of the first, second ant third optical information recording medium respectively so as to form an appropriate wavefront within respective prescribed necessary image side numerical apertures.

摘要翻译： 混合物镜具有在其至少一个光学表面上由多个同轴环形区域构成的折射透镜和衍射光学元件。 当n1，n2和n3分别是当各光束入射时具有波长λ1，λ2和λ3的第一，第二和第三光束中的每一个的衍射光线中具有最大光量的衍射光线的衍射级数 分别进入衍射结构，满足下列公式

公开(公告)号：US20080181085A1

公开(公告)日：2008-07-31

申请号：US12052359

申请日：2008-03-20

申请人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a diffraction order of a diffracted ray having a maximum light amount among diffracted rays of each of first, second and third light flux having wavelength λ1, λ2 and λ3 when respective light flux comes to be incident into the diffractive structure respectively, the following formulas are satisfied: |n1|>|n2|, and |n1>|n3|, and the hybrid objective lens converges a n1-th, n2-th and n3-th order diffracted ray of the first, second and third light flux onto an information recording plane of each of the first, second ant third optical information recording medium respectively so as to form an appropriate wavefront within respective prescribed necessary image side numerical apertures.

摘要翻译： 混合物镜具有在其至少一个光学表面上由多个同轴环形区域构成的折射透镜和衍射光学元件。 当n 1，n 2和n 3各自是当各个光束来到时具有波长λ1，λ2和λ3的第一，第二和第三光束中的每一个的衍射光线中具有最大光量的衍射光线的衍射级数 要分别入射到衍射结构中，满足下列公式：<？in-line-formula description =“In-line formula”end =“lead”？> | n 1 |> | n 2 |和| n 1> | n 3 |和<？in-line-formula description =“In-line Formulas”end =“tail”？>混合物镜会聚第n1，第n2和第n3阶衍射光线 分别在第一，第二蚂蚁第三光学信息记录介质的信息记录面上分别形成第一，第二和第三光束，以便在相应的规定的必需像侧数值孔内形成适当的波前。

公开(公告)号：US20070258144A1

公开(公告)日：2007-11-08

申请号：US11679204

申请日：2007-02-27

申请人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC分类号： G02B27/44

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a diffraction order of a diffracted ray having a maximum light amount among diffracted rays of each of first, second and third light flux having wavelength λ1, λ2 and λ3 when respective light flux comes to be incident into the diffractive structure respectively, the following formulas are satisfied: |n1|>|n2|, and |n1|>|n3|, and the hybrid objective lens converges a n1-th, n2-th and n3-th order diffracted ray of the first, second and third light flux onto an information recording plane of each of the first, second ant third optical information recording medium respectively so as to form an appropriate wavefront within respective prescribed necessary image side numerical apertures.

摘要翻译： 混合物镜具有在其至少一个光学表面上由多个同轴环形区域构成的折射透镜和衍射光学元件。 当n 1，n 2和n 3各自是当各个光束来到时具有波长λ1，λ2和λ3的第一，第二和第三光束中的每一个的衍射光线中具有最大光量的衍射光线的衍射级数 要分别入射到衍射结构中，满足下列公式：<？in-line-formula description =“In-line formula”end =“lead”？> | n 1 |> | n 2 |和| n 1 |> | n 3 |和<？in-line-formula description =“In-line Formulas”end =“tail”？>混合物镜会聚第1，第2和第3 分别将第一，第二和第三光束的次级衍射光线分别放置到第一，第二蚂蚁第三光学信息记录介质中的每一个的信息记录平面上，以便在各个规定的必要图像侧数值孔径内形成适当的波前。

公开(公告)号：US07483358B2

公开(公告)日：2009-01-27

申请号：US12052359

申请日：2008-03-20

申请人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： A hybrid objective lens has a refractive lens and a diffractive optical element constructed by plural coaxial ring-shaped zones on at least one optical surface thereof. When n1, n2 and n3 each is a diffraction order of a diffracted ray having a maximum light amount among diffracted rays of each of first, second and third light flux having wavelength λ1, λ2 and λ3 when respective light flux comes to be incident into the diffractive structure respectively, the following formulas are satisfied: |n1|>|n2|, and |n1>|n3 |, and the hybrid objective lens converges a n1-th, n2-th and N3-th order diffracted ray of the first, second and third light flux onto an information recording plane of each of the first, second ant third optical information recording medium respectively so as to form an appropriate wavefront within respective prescribed necessary image side numerical apertures.

摘要翻译： 混合物镜具有在其至少一个光学表面上由多个同轴环形区域构成的折射透镜和衍射光学元件。 当n1，n2和n3分别是当各个光束入射到第一，第二和第三光束时具有波长λ1，λ2和λ3的第一，第二和第三光束中的每一个的衍射光线中具有最大光量的衍射光线的衍射级数 衍射结构分别满足下列公式：<？in-line-formula description =“In-line formula”end =“lead”？> | n1 |> | n2 |，| n1> | n3 | ？在线公式描述=“内联公式”end =“tail”？>混合物镜会聚第一，第二和第三光通量的第n1，第n2和第N3阶衍射光线 分别在第一，第二蚂蚁第三光学信息记录介质的信息记录面上分别形成在相应的规定的必要图像侧数值孔内的适当的波前。