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    Optical pickup apparatus and objective optical unit
    2.
    发明申请
    Optical pickup apparatus and objective optical unit 审中-公开
    光学拾取装置和物镜光学单元

    公开(公告)号：US20060203692A1

    公开(公告)日：2006-09-14

    申请号：US11366546

    申请日：2006-03-03

    申请人： Kohei Ota ,  Nobuyoshi Mori ,  Junji Hashimura ,  Tohru Kimura ,  Kiyono Ikenaka ,  Katsuya Sakamoto ,  Eiji Nomura

    发明人： Kohei Ota ,  Nobuyoshi Mori ,  Junji Hashimura ,  Tohru Kimura ,  Kiyono Ikenaka ,  Katsuya Sakamoto ,  Eiji Nomura

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1367 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

    摘要： 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.

    摘要翻译： 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。

    Optical pickup apparatus
    5.
    发明申请
    Optical pickup apparatus 审中-公开
    光拾取装置

    公开(公告)号：US20050105446A1

    公开(公告)日：2005-05-19

    申请号：US10987853

    申请日：2004-11-12

    申请人： Katsuya Sakamoto ,  Junji Hashimura ,  Kiyono Ikenaka

    发明人： Katsuya Sakamoto ,  Junji Hashimura ,  Kiyono Ikenaka

    IPC分类号： G11B7/00

    CPC分类号： G11B7/13927 ,  G11B7/1356 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/1398 ,  G11B2007/0006

    摘要： This invention provides an optical pickup apparatus which includes a plurality of light sources, a beam shaping element which is arranged in an optical path through which a light beam emitted from at least one of the light sources passes, and an optical system which includes a divergence angle conversion element and an objective lens and is arranged in an optical path through which the light beams emitted from the plurality of light sources pass, and records and/or reproduces information by condensing, through the objective lens, the light beam emitted from each light source on the information recording surface of a corresponding optical information recording medium. An almost elliptical cross-sectional shape of the light beam which enters the beam shaping element is shaped into a cross-sectional shape closer to an almost circular shape or a circular shape, and the light beam emerges from the beam shaping element. The light beam which enters the divergence angle conversion element emerges from it with a reduced angle or degree of divergence.

    摘要翻译： 本发明提供了一种包括多个光源的光学拾取装置，一个光束整形元件，其布置在从至少一个光源发射的光束通过的光路中，以及包括发散的光学系统 角度转换元件和物镜，并且被布置在从多个光源发射的光束通过的光路中，并且通过物镜通过聚光来记录和/或再现从每个光发射的光束的信息 源在相应的光学信息记录介质的信息记录表面上。 进入光束成形元件的光束的近似椭圆形的横截面形状被成形为更接近于几乎圆形或圆形的横截面形状，并且光束从光束成形元件出射。 进入发散角转换元件的光束以减小的角度或发散度出现。

    Optical pickup apparatus and objective lens
    7.
    发明申请
    Optical pickup apparatus and objective lens 失效
    光学拾取装置和物镜

    公开(公告)号：US20080192612A1

    公开(公告)日：2008-08-14

    申请号：US12000783

    申请日：2007-12-17

    申请人： Shinichiro Saito ,  Katsuya Sakamoto

    发明人： Shinichiro Saito ,  Katsuya Sakamoto

    IPC分类号： G11B7/135 ,  G11B7/00

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

    摘要： An objective lens of an optical pickup apparatus converges a divergent light flux onto an information recording surface. The following conditional formula is satisfied: |δSA1/δU|·|δU|+|δSA2/δT|·|δT|≦0.07λrms where λ represents a wavelength of a light source, δSA1/δU represents a change of a spherical aberration for an object-to-image distance change δU (|δU|≦0.5 mm) and δSA2/δT represents a change of spherical aberration for a temperature change δT (|δT|≦30° C.), the object-to-image distance is a distance between the light source (a light emitting point) and the information recording surface.

    摘要翻译： 光学拾取装置的物镜将发散光束会聚到信息记录表面上。 满足以下条件公式：<？in-line-formula description =“In-line Formulas”end =“lead”？> | deltaSA /deltaU|.|deltaU|+|deltaSA < ＆lt;＆gt;＆lt;＆gt;＆lt;＆lt;＆gt;＆lt;＆gt;＆lt;＆gt;＆lt; deltaSA＆lt; 1＆gt; / deltaU表示对象到图像间距变化ΔU（| deltaU |≤0.5mm）和deltaSA2 / deltaT表示的球面像差的变化 对于温度变化ΔT（| deltaT | <= 30℃）的球面像差的变化，对象间距离是光源（发光点）和信息记录面之间的距离。

    Optical pickup apparatus and optical information recording and/or reproducing apparatus
    8.
    发明申请
    Optical pickup apparatus and optical information recording and/or reproducing apparatus 失效
    光学拾取装置和光学信息记录和/或再现装置

    公开(公告)号：US20070019518A1

    公开(公告)日：2007-01-25

    申请号：US11487518

    申请日：2006-07-17

    申请人： Mika Wachi ,  Kiyono Ikenaka ,  Katsuya Sakamoto

    发明人： Mika Wachi ,  Kiyono Ikenaka ,  Katsuya Sakamoto

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1275 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006

    摘要： 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.

    摘要翻译： 一种光学拾取装置，其通过使用具有波长λ1（350≤λ（nm）= 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。

    Objective lens, optical pickup device and method for producing optical element for optical pickup device
    9.
    发明授权
    Objective lens, optical pickup device and method for producing optical element for optical pickup device 失效
    物镜，光学拾取装置和用于制造光学拾取装置的光学元件的方法

    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

    Optical pickup apparatus and objective lens
    10.
    发明申请
    Optical pickup apparatus and objective lens 失效
    光学拾取装置和物镜

    公开(公告)号：US20060140103A1

    公开(公告)日：2006-06-29

    申请号：US11355220

    申请日：2006-02-16

    申请人： Shinichiro Saito ,  Katsuya Sakamoto

    发明人： Shinichiro Saito ,  Katsuya Sakamoto

    IPC分类号： G11B7/135 ,  G11B7/00

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

    摘要： An objective lens of an optical pickup apparatus converges a divergent light flux onto an information recording surface. The following conditional formula is satisfied: |δSA1/δU|·|δU|+|δSA2/δT|·|δT|≦0.07 λrms where λ represents a wavelength of a light source, δSA1/δU represents a change of a spherical aberration for an object-to-image distance change δU (|δU|≦0.5 mm) and δSA2/δT represents a change of spherical aberration for a temperature change δT (|δT|≦30° C.), the object-to-image distance is a distance between the light source (a light emitting point) and the information recording surface.

    摘要翻译： 光学拾取装置的物镜将发散光束会聚到信息记录表面上。 满足以下条件公式：<？in-line-formula description =“In-line Formulas”end =“lead”？> | deltaSA /deltaU|.|deltaU|+|deltaSA < SUB> 2 / deltaT |。| deltaT | <= 0.07 lambdarms <？in-line-formula description =“In-line Formulas”end =“tail”？>其中lambda表示光源的波长， deltaSA＆lt; 1＆gt; / deltaU表示对象到图像间距变化ΔU（| deltaU |≤0.5mm）和deltaSA2 / deltaT表示的球面像差的变化 对于温度变化ΔT（| deltaT | <= 30℃）的球面像差的变化，对象间距离是光源（发光点）和信息记录面之间的距离。