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：US07382709B2

公开(公告)日：2008-06-03

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： 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：US20050219988A1

公开(公告)日：2005-10-06

申请号：US11092896

申请日：2005-03-30

申请人： Yuichi Atarashi ,  Kohei Ota ,  Katsuya Yagi ,  Junji Hashimura ,  Tohru Kimura ,  Katsuya Sakamoto

发明人： Yuichi Atarashi ,  Kohei Ota ,  Katsuya Yagi ,  Junji Hashimura ,  Tohru Kimura ,  Katsuya Sakamoto

IPC分类号： G11B7/09 ,  G11B7/00 ,  G11B7/125 ,  G11B7/1275 ,  G11B7/135 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/1392

CPC分类号： G11B7/13927 ,  G11B7/1275 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/0006

摘要： An optical pickup apparatus comprises a first, second and third light beam sources for emitting first light beams having wavelengths λ1, λ2 and λ3 (λ1

摘要翻译： 光拾取装置包括第一，第二和第三光束源，用于发射分别具有第一，第二和第二记录介质的第一，第二和第三记录介质的具有波长λ1，λ2和λ3（λ1<λ2λ）的第一光束， 具有厚度t1，t2和t3的第三保护层，用于将第一，第二和第三光束会聚到第一，第二和第三记录介质的各个记录表面上的物镜光学透镜，用于使目标移动的跟踪装置 光学透镜，用于改变能够在光轴方向上移动并放置在光路中的光束的发散角的第一发散角度改变元件和用于校正当跟踪装置产生的彗形像差的彗形像差校正元件 移动物镜光学元件。

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。

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：US07957231B2

公开(公告)日：2011-06-07

申请号：US12533070

申请日：2009-07-31

申请人： Tohru Kimura ,  Yuichi Atarashi ,  Kiyono Ikenaka ,  Kenji Ogiwara ,  Eiji Nomura

发明人： Tohru Kimura ,  Yuichi Atarashi ,  Kiyono Ikenaka ,  Kenji Ogiwara ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13925 ,  G11B2007/0006

摘要： A light flux from the first light source forms a converged spot on first optical information recording medium by only a refraction action of the aspheric surface, or by a combination of the refraction action and an optical action given by at least one of the first phase structure and the second phase structure, a light flux from the second light source forms a converged spot on second optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure, and a light flux from the third light source forms a converged spot on third optical recording medium by a combination of a refraction action of the aspheric surface and an optical action given by at least one of the first phase structure and the second phase structure.

摘要翻译： 来自第一光源的光束仅通过非球面的折射作用或通过由第一相结构中的至少一个给出的折射作用和光学作用的组合在第一光学信息记录介质上形成会聚点 和第二相结构，来自第二光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第二光学记录介质上形成会聚点 第二相结构，并且来自第三光源的光束通过非球面的折射作用和由第一相结构和第二相结构中的至少一个给出的光学作用的组合在第三光学记录介质上形成会聚点 相结构。

公开(公告)号：US07593307B2

公开(公告)日：2009-09-22

申请号：US11100389

申请日：2005-04-07

申请人： Tohru Kimura ,  Junji Hashimura ,  Yuichi Atarashi ,  Toshiyuki Kojima

发明人： Tohru Kimura ,  Junji Hashimura ,  Yuichi Atarashi ,  Toshiyuki Kojima

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B7/1378 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An objective lens system for an optical pickup apparatus, includes in order from an object side: a first lens group having negative paraxial power P1 (mm−1); and a second lens group having positive paraxial power P2 (mm−1) for converging a light flux emitted from the first lens group on an information recording surface of an optical information recording medium.

摘要翻译： 一种用于光学拾取装置的物镜系统，从物体侧依次包括具有负近轴功率P1（mm-1）的第一透镜组; 以及具有正的近轴光焦度P2（mm-1）的第二透镜组，用于将从第一透镜组发射的光束会聚在光学信息记录介质的信息记录表面上。