公开(公告)号：US07382709B2

公开(公告)日：2008-06-03

申请号：US11679204

申请日：2007-02-27

Applicant: Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

Inventor： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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

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

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

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

CPC classification number: G11B7/13927 ,  G11B7/1275 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/0006

Abstract: 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

Abstract translation: 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

Applicant: Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

Inventor： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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：US20080181085A1

公开(公告)日：2008-07-31

申请号：US12052359

申请日：2008-03-20

Applicant: Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

Inventor： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC: G11B7/135

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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

Applicant: Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

Inventor： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC: G02B27/44

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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：US07872959B2

公开(公告)日：2011-01-18

申请号：US12326456

申请日：2008-12-02

Applicant: Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

Inventor： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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

Applicant: Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

Inventor： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC: G11B7/135

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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

Applicant: Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

Inventor： Tohru Kimura ,  Katsuya Sakamoto ,  Yuichi Atarashi

IPC: G11B7/00

CPC classification number: G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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：US20080259767A1

公开(公告)日：2008-10-23

申请号：US12155620

申请日：2008-06-06

Applicant: Mitsuru Mimori ,  Kohei Ota ,  Shinichiro Saito ,  Yuichi Atarashi ,  Katsuya Sakamoto ,  Hidekazu Totsuka ,  Kiyono Ikenaka

Inventor： Mitsuru Mimori ,  Kohei Ota ,  Shinichiro Saito ,  Yuichi Atarashi ,  Katsuya Sakamoto ,  Hidekazu Totsuka ,  Kiyono Ikenaka

IPC: G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/1275 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An objective optical element of an optical pickup apparatus has a magnification m1 satisfying the following formula for a light flux of the wavelength λ1: − 1/7≦m1≦− 1/25 and |m1|

Abstract translation: 光学拾取装置的物镜光学元件具有满足下列公式的放大倍数m 1对于波长λ1：1/7 <= m 1 <= - 1/25和| m 1 | <| M的光通量 1，其中M 1是从第一光源到波长λ1的光通量的第一光信息记录介质的光学系统倍率。 物镜光学元件包括公共区域和专用区域。 专有区域包括具有抑制由于大气温度升高引起的球面像差增加的功能的专属衍射结构。 通过专用衍射结构的波长λ2的光通量与形成在第二光学信息记录介质的信息记录面上的会聚光点的位置不同的位置与光轴相交。

公开(公告)号：US20050007931A1

公开(公告)日：2005-01-13

申请号：US10882617

申请日：2004-07-01

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

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

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

CPC classification number: G11B7/1378 ,  G11B7/1275 ,  G11B7/1376 ,  G11B7/1398 ,  G11B2007/0006

Abstract: 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.

Abstract translation: 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。