公开(公告)号：US20060062104A1

公开(公告)日：2006-03-23

申请号：US11211747

申请日：2005-08-26

申请人： Tohru Kimura ,  Takemi Miyazaki ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Takemi Miyazaki ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/22 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： The lens unit for the optical pick-up apparatus has: the objective lens by which the projecting light from the light source is condensed on the information recording surface of the optical information recording medium; the phase control element which is arranged on the light source side to the objective lens, and which controls the phase of the projecting light from the light source; and the supporting member holding the objective lens and the phase control element; and the phase control element is held under the condition that its optical axis is inclined by a predetermined angle to the optical axis of the objective lens, and the intersection at which the optical axis of the phase control element crosses the optical surface having the phase structure is arranged on the optical path passing through the central point which passes the optical axis of the objective lens.

摘要翻译： 用于光学拾取装置的透镜单元具有：将来自光源的投影光聚焦在光学信息记录介质的信息记录表面上的物镜; 所述相位控制元件布置在所述物镜的光源侧，并且控制来自所述光源的所述投射光的相位; 以及保持物镜和相位控制元件的支撑构件; 并且相位控制元件被保持在其光轴相对于物镜的光轴倾斜预定角度的条件下，并且相位控制元件的光轴与具有相位结构的光学表面相交的交点 被布置在通过穿过物镜的光轴的中心点的光路上。

公开(公告)号：US07719948B2

公开(公告)日：2010-05-18

申请号：US11211747

申请日：2005-08-26

申请人： Tohru Kimura ,  Takemi Miyazaki ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Takemi Miyazaki ,  Yuichi Atarashi

IPC分类号： G11B7/135

CPC分类号： G11B7/22 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： The lens unit for the optical pick-up apparatus has: the objective lens by which the projecting light from the light source is condensed on the information recording surface of the optical information recording medium; the phase control element which is arranged on the light source side to the objective lens, and which controls the phase of the projecting light from the light source; and the supporting member holding the objective lens and the phase control element; and the phase control element is held under the condition that its optical axis is inclined by a predetermined angle to the optical axis of the objective lens, and the intersection at which the optical axis of the phase control element crosses the optical surface having the phase structure is arranged on the optical path passing through the central point which passes the optical axis of the objective lens.

摘要翻译： 用于光学拾取装置的透镜单元具有：将来自光源的投影光聚焦在光学信息记录介质的信息记录表面上的物镜; 所述相位控制元件布置在所述物镜的光源侧，并且控制来自所述光源的所述投射光的相位; 以及保持物镜和相位控制元件的支撑构件; 并且相位控制元件被保持在其光轴相对于物镜的光轴倾斜预定角度的条件下，并且相位控制元件的光轴与具有相位结构的光学表面相交的交点 被布置在通过穿过物镜的光轴的中心点的光路上。

公开(公告)号：US07889618B2

公开(公告)日：2011-02-15

申请号：US11222073

申请日：2005-09-09

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 first phase structure corrects at least one of a spherical aberration due to a difference between a protective substrate thickness t1 and a protective substrate thickness t2 and a spherical aberration due to a difference between a first wavelength λ1 and a second wavelength λ2, and a second phase structure corrects at least one of a spherical aberration generated when the first wavelength λ1 is changed in a range of ±10 nm, a best image point movement generated when the first wavelength λ1 is changed in a range of ±10 nm, and a spherical aberration generated when environmental temperature is changed.

摘要翻译： 第一相位结构校正由于保护基板厚度t1和保护基板厚度t2之间的差异引起的球面像差和由于第一波长λ1和第二波长λ2之间的差异引起的球面像差中的至少一个， 相位结构校正当第一波长λ1在±10nm的范围内变化时产生的球面像差中的至少一个，当第一波长λ1在±10nm的范围内变化时产生的最佳图像点移动，以及球面 当环境温度改变时产生的像差。

公开(公告)号：US20080170487A1

公开(公告)日：2008-07-17

申请号：US12071740

申请日：2008-02-26

申请人： Tohru Kimura ,  Kiyoshi Yamashita ,  Nobuyoshi Mori ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Kiyoshi Yamashita ,  Nobuyoshi Mori ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An optical system for use in an optical pickup apparatus comprises a first optical surface having a superposition type diffractive structure including a plurality of ring-shaped zones which are formed concentrically around an optical axis, wherein each ring-shaped zone is composed of a plurality of stepped sections stepwise, and a second optical surface having a diffractive structure including a plurality of ring-shaped zones which are formed concentrically around an optical axis, wherein each of the plurality of ring-shaped zones are divided by a stepped section to generate a diffractive light ray of diffractive order whose absolute value is not small than 1 for the light flux.

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：US07193954B2

公开(公告)日：2007-03-20

申请号：US10805730

申请日：2004-03-22

申请人： Katsuya Yagi ,  Yuichi Atarashi ,  Tohru Kimura ,  Kiyono Ikenaka

发明人： Katsuya Yagi ,  Yuichi Atarashi ,  Tohru Kimura ,  Kiyono Ikenaka

IPC分类号： G11B7/00

CPC分类号： G11B7/1378 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An optical pickup apparatus includes first, second and third light sources; a light converging optical system including a first objective optical element and a second objective optical element, wherein the first objective optical element converges the light flux emitted from the first light source on a first information recording surface, the second objective optical element converges the light flux emitted from the third light source on a third information recording surface, and the first objective optical element or the second objective optical element converges the light flux emitted from the second light source on a second information recording surface; a lens holder holding the first objective optical element and the second objective element therein; and a chromatic aberration correcting element which corrects a chromatic aberration caused by a wavelength variation in a light flux emitted by the first light source.

摘要翻译： 光拾取装置包括第一，第二和第三光源; 包括第一物镜光学元件和第二物镜光学元件的聚光光学系统，其中所述第一物镜光学元件将从所述第一光源发射的光束会聚在第一信息记录表面上，所述第二物镜光学元件会聚所述光通量 并且所述第一物镜光学元件或所述第二物镜光学元件将从所述第二光源射出的光束会聚在第二信息记录面上， 保持所述第一物镜光学元件和所述第二物镜元件的透镜保持器; 以及色差校正元件，其校正由第一光源发射的光束中的波长变化引起的色差。

公开(公告)号：US20060077793A1

公开(公告)日：2006-04-13

申请号：US11222137

申请日：2005-09-09

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：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：US08077583B2

公开(公告)日：2011-12-13

申请号：US12417964

申请日：2009-04-03

申请人： Tohru Kimura ,  Kiyoshi Yamashita ,  Nobuyoshi Mori ,  Yuichi Atarashi

发明人： Tohru Kimura ,  Kiyoshi Yamashita ,  Nobuyoshi Mori ,  Yuichi Atarashi

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An optical system for use in an optical pickup apparatus comprises a first optical surface having a superposition type diffractive structure including a plurality of ring-shaped zones which are formed concentrically around an optical axis, wherein each ring-shaped zone is composed of a plurality of stepped sections stepwise, and a second optical surface having a diffractive structure including a plurality of ring-shaped zones which are formed concentrically around an optical axis, wherein each of the plurality of ring-shaped zones are divided by a stepped section to generate a diffractive light ray of diffractive order whose absolute value is not small than 1 for the light flux.

摘要翻译： 一种用于光学拾取装置的光学系统包括具有叠加型衍射结构的第一光学表面，该叠置型衍射结构包括围绕光轴同心地形成的多个环形区域，其中每个环形区域由多个 并且具有衍射结构的第二光学表面，所述衍射结构包括围绕光轴同心地形成的多个环形区域，其中，所述多个环形区域中的每一个被阶梯部分分割以产生衍射 光通量的绝对值不小于1的衍射光线。

公开(公告)号：US20090238061A1

公开(公告)日：2009-09-24

申请号：US11661857

申请日：2006-09-15

申请人： Yuichi Atarashi ,  Tohru Kimura

发明人： Yuichi Atarashi ,  Tohru Kimura

IPC分类号： G11B7/135

CPC分类号： G11B7/13925 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1395 ,  G11B2007/0006

摘要： A structure according to the present invention is an optical pickup apparatus including a first light source, a second light source, a third light source, a first objective optical system, a second objective optical system, an incidence optical system for emitting the first to third light fluxes into the first objective optical system or the second objective optical system, and an optical detector. The optical pickup apparatus converges a light flux emitted from the first light source onto an information recording surface of a first optical information recording medium or a second optical information recording medium, by using the first objective optical system. The optical pickup apparatus converges a light flux emitted from the second light source onto an information recording surface of a third optical information recording medium by using the second objective optical system, and further converges a light flux emitted from the third light source onto an information recording surface of a fourth optical information recording medium by using the second objective optical system. The first objective optical system includes an objective lens, and a liquid crystal correcting element being adopted to correct the amount of spherical aberration for a light flux passing through the liquid crystal correcting element.

摘要翻译： 根据本发明的结构是一种光拾取装置，包括第一光源，第二光源，第三光源，第一物镜光学系统，第二物镜光学系统，用于发射第一至第三光束的入射光学系统 光通量进入第一物镜光学系统或第二物镜光学系统，以及光学检测器。 光拾取装置通过使用第一物镜光学系统将从第一光源发射的光束会聚到第一光信息记录介质或第二光信息记录介质的信息记录表面上。 光拾取装置通过使用第二物镜光学系统将从第二光源发射的光束会聚到第三光信息记录介质的信息记录表面上，并且还将从第三光源发射的光束会聚到信息记录 通过使用第二物镜光学系统的第四光学信息记录介质的表面。 第一物镜光学系统包括物镜和液晶校正元件，用于校正通过液晶校正元件的光通量的球面像差量。