公开(公告)号：US06856471B2

公开(公告)日：2005-02-15

申请号：US10368784

申请日：2003-02-19

Applicant: Hidekazu Totsuka ,  Shinichiro Saito ,  Katsuya Sakamoto ,  Kiyono Ikenaka

Inventor： Hidekazu Totsuka ,  Shinichiro Saito ,  Katsuya Sakamoto ,  Kiyono Ikenaka

IPC: G02B13/00 ,  G02B13/18 ,  G11B7/00 ,  G11B7/125 ,  G02B3/02

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

Abstract: An objective optical element for use in an optical pickup apparatus, includes an objective lens to converge the light flux emitted from the first and second light sources; and an optical functional surface including a common region and an exclusive region. When a first optical information medium is used, a sine condition unsatisfied-amount whose value is maximum exists on the common region. The following formula is satisfied: 0.5≦COMA2/COMA1≦1.0 where COMA1 is a coma aberration (λ1 rms) when a light flux goes slantingly to be incident with a view angle of 1° onto the objective optical element when the first optical information medium is used, and COMA2 is a coma aberration (λ2 rms) when a light flux goes slantingly to be incident with a view angle of 1° onto the objective optical element when the second optical information medium is used.

Abstract translation: 一种用于光学拾取装置的物镜光学元件，包括：物镜，用于会聚从第一和第二光源发出的光束; 以及包括公共区域和专有区域的光学功能表面。 当使用第一光信息介质时，公共区域上存在值最大的正弦条件不满足量。 满足以下公式：当使用第一光信息介质时，当光通量倾斜倾斜入射到物镜光学元件上时，COMA1为彗差（λ1rms），COMA2为 当使用第二光信息介质时光通量倾斜地以1°的视角入射到物镜光学元件上时的彗形像差（λ2rms）。

公开(公告)号：US06807139B2

公开(公告)日：2004-10-19

申请号：US10117188

申请日：2002-04-08

Applicant: Katsuya Sakamoto

Inventor： Katsuya Sakamoto

IPC: G11B700

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

Abstract: An objective lens comprises at least inner and outer optically functional regions arranged in a direction perpendicular to an optical axis and each of the inner and outer optically functional regions has a diffractive structure. The objective lens comprises a light amount reducing structure to reduce an amount of the light flux passing through a region of the objective lens other than the inner optically functional region when recording or reproducing is conducted for CD.

Abstract translation: 物镜至少包括沿垂直于光轴的方向布置的内光学功能区域和外部光学功能区域，并且每个内部和外部光学功能区域都具有衍射结构。 该物镜包括光量减少结构，以减少当进行CD的记录或再现时通过除了内部光学功能区域之外的物镜区域的光通量。

公开(公告)号：US20120155241A1

公开(公告)日：2012-06-21

申请号：US13407405

申请日：2012-02-28

Applicant: Kohei OTA ,  Nobuyoshi MORI ,  Junji HASHIMURA ,  Tohru KIMURA ,  Kiyono IKENAKA ,  Katsuya SAKAMOTO ,  Eiji NOMURA

Inventor： Kohei OTA ,  Nobuyoshi MORI ,  Junji HASHIMURA ,  Tohru KIMURA ,  Kiyono IKENAKA ,  Katsuya SAKAMOTO ,  Eiji NOMURA

IPC: G11B7/1353

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

Abstract: An optical pickup apparatus includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical unit having a first optical path difference providing structure and a second optical path difference providing structure. Magnifications of the objective optical unit for the first-third light fluxes have almost same value. The first optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be one of under-correction and over-correction for all of the first light flux, the second light flux, and the third light flux. The second optical path difference providing structure provides a predefined optical path difference and changes a spherical aberration to be the other of under-correction and over-correction of the spherical aberration only for the second light flux.

Abstract translation: 一种光学拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 以及具有第一光程差提供结构和第二光程差提供结构的物镜光学单元。 用于第一至第三光束的物镜光学单元的放大率具有几乎相同的值。 第一光程差提供结构提供预定的光程差，并且将球面像差改变为对于所有第一光通量，第二光通量和第三光通量的校正和过校正之一。 第二光程差提供结构提供预定的光程差，并且将球面像差改变为仅用于第二光通量的球面像差的校正不足和过校正。

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：US07697392B2

公开(公告)日：2010-04-13

申请号：US11487518

申请日：2006-07-17

Applicant: Mika Wachi ,  Kiyono Ikenaka ,  Katsuya Sakamoto

Inventor： Mika Wachi ,  Kiyono Ikenaka ,  Katsuya Sakamoto

IPC: G11B7/135 ,  G11B7/00

CPC classification number: G11B7/1275 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup apparatus which conducts reproducing and/or recording information for a first optical information recording medium by using a light flux having a wavelength λ1 (350≦λ1 (nm)≦480) and a second optical information recording medium. The optical pickup apparatus comprises an output angle conversion element which is a fixedly arranged single lens which can convert an output angle of the first light flux and the second light flux. The optical detector equipped in the optical pickup apparatus can receive both of the first light flux and the second light flux. And, both optical surfaces of the output angle conversion element are refractive surfaces.

Abstract translation: 一种光拾取装置，其通过使用具有波长λ1（350＆amp;λ1（nm）＆nlE; 480）的光束和第二光学信息记录介质来传送用于第一光学信息记录介质的信息的再现和/或记录。 光拾取装置包括输出角转换元件，其是可以转换第一光通量和第二光通量的输出角度的固定布置的单透镜。 配备在光学拾取装置中的光学检测器可以接收第一光通量和第二光束两者。 并且，输出角转换元件的两个光学表面都是折射表面。

公开(公告)号：US07558180B2

公开(公告)日：2009-07-07

申请号：US10532602

申请日：2004-08-10

Applicant: Katsuya Sakamoto ,  Junji Hashimura

Inventor： Katsuya Sakamoto ,  Junji Hashimura

IPC: G11B7/135

CPC classification number: G11B7/1398 ,  G02B7/028 ,  G02B27/0966 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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：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：US20070159952A1

公开(公告)日：2007-07-12

申请号：US11717627

申请日：2007-03-14

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对于波长λ1：-1/7 <= m 1 <= - 1/25和| m 1 | <| M 1的光束满足下式的放大率m1 其中M 1是从第一光源到波长λ1的光通量的第一光学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。 波长λ2的光通量。 已经通过专用衍射结构的光轴与形成在第二光学信息记录介质的信息记录平面上的会聚光点的位置不同的位置相交。

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：US20100326038A1

公开(公告)日：2010-12-30

申请号：US12918687

申请日：2009-02-18

Applicant: Yoshihiro Fujimoto ,  Katsuya Sakamoto ,  Tatsushi Fujimori ,  Hajime Izawa ,  Hiroyuki Osawa ,  Takashi Murashima ,  Kikuo Hashimoto

Inventor： Yoshihiro Fujimoto ,  Katsuya Sakamoto ,  Tatsushi Fujimori ,  Hajime Izawa ,  Hiroyuki Osawa ,  Takashi Murashima ,  Kikuo Hashimoto

IPC: D07B1/02

CPC classification number: H01B7/2825 ,  D07B1/025 ,  D07B1/147 ,  D07B1/162 ,  D07B1/165 ,  D07B2205/201 ,  D07B2501/2061 ,  H01B3/305 ,  H01B7/285 ,  Y02A30/14 ,  D07B2801/16 ,  D07B2801/22

Abstract: A high-strength cable is a high-strength cable that has a twisted layer 21 of non-metallic reinforcing elements in outer coatings. Reinforcing elements 41 and 42 have coating elements 50 and 60, fiber elements 51 and 61 of copolyparaphenylene-3,4′-oxydiphenyleneterephthalic amide disposed in the coating elements 50 and 60, and filling materials 52 and 62 filled between the fiber elements, respectively. The lateral compression stress of the fiber elements 51 and 61 of the copolyparaphenylene-3,4′-oxydiphenyleneterephthalic amide is 75 cN/dtex or more.

Abstract translation: 高强度电缆是在外涂层中具有非金属增强元件的扭曲层21的高强度电缆。 加强元件41和42分别具有涂覆元件50和60，分别设置在涂层元件50和60中的共聚对亚苯基-3,4'-氧二苯基对苯二甲酰胺的纤维元件51和61以及填充在纤维元件之间的填充材料52和62。 共聚对亚苯基-3,4'-氧二苯基对苯二甲酰胺的纤维元件51和61的侧向压缩应力为75cN / dtex以上。