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    Objective optical element, optical pick-up apparatus, and optical information recording reproducing apparatus
    2.
    发明授权
    Objective optical element, optical pick-up apparatus, and optical information recording reproducing apparatus 失效
    物镜光学元件，光学拾取装置和光学信息记录再现装置

    公开(公告)号：US06856471B2

    公开(公告)日：2005-02-15

    申请号：US10368784

    申请日：2003-02-19

    申请人： Hidekazu Totsuka ,  Shinichiro Saito ,  Katsuya Sakamoto ,  Kiyono Ikenaka

    发明人： Hidekazu Totsuka ,  Shinichiro Saito ,  Katsuya Sakamoto ,  Kiyono Ikenaka

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

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

    摘要： 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.

    摘要翻译： 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）。

    Optical pick-up apparatus and divergent angle-converting element
    6.
    发明授权
    Optical pick-up apparatus and divergent angle-converting element 失效
    光学拾取装置和发散角转换元件

    公开(公告)号：US07289415B2

    公开(公告)日：2007-10-30

    申请号：US10976844

    申请日：2004-11-01

    申请人： Kiyono Ikenaka ,  Shinichiro Saito ,  Yuichi Atarashi

    发明人： Kiyono Ikenaka ,  Shinichiro Saito ,  Yuichi Atarashi

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1376 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical pickup apparatus comprising: a first light source emitting first light flux having wavelength λ1 (380 nm≦λ1≦450 nm); a second light source emitting second light flux having wavelength λ2 (600 nm≦λ2≦700 nm); a third light source emitting third light flux having wavelength λ3 (750 nm≦λ3≦800 nm); a first divergent angle-converting element through which the first light flux passes; a second divergent angle-converting element through which the second light flux and the third light flux pass; and an objective optical element through which the first, second, and third light fluxes pass. Optical magnification m2 of the second divergent angle-converting element for the second light flux and optical magnification m3 of the second divergent angle-converting element for the third light flux are different from each other.

    摘要翻译： 一种光学拾取装置，包括：第一光源，发射波长为λ1（380nm <λ1 <= 450nm）的第一光束; 发射波长为λ2（600nm <=λ2 <= 700nm）的第二光束的第二光源; 发射波长为λ3（750nm <λ3 = 800nm）的第三光束的第三光源; 第一发光角转换元件，第一光束通过该第一发散角转换元件; 第二发光角转换元件，第二光束和第三光束通过该第二发散角转换元件; 以及第一，第二和第三光束通过的物镜光学元件。 用于第二光束的第二发散角转换元件的光学倍率m 2和用于第三光束的第二发散角转换元件的光学倍率m 3彼此不同。

    Optical pick-up apparatus and divergent angle-converting element
    7.
    发明申请
    Optical pick-up apparatus and divergent angle-converting element 失效
    光学拾取装置和发散角转换元件

    公开(公告)号：US20050094537A1

    公开(公告)日：2005-05-05

    申请号：US10976844

    申请日：2004-11-01

    申请人： Kiyono Ikenaka ,  Shinichiro Saito ,  Yuichi Atarashi

    发明人： Kiyono Ikenaka ,  Shinichiro Saito ,  Yuichi Atarashi

    IPC分类号： G02B13/00 ,  G02B13/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1376 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical pickup apparatus comprising: a first light source emitting first light flux having wavelength λ1 (380 nm≦λ1≦450 nm); a second light source emitting second light flux having wavelength λ2 (600 nm≦λ2≦700 nm); a third light source emitting third light flux having wavelength λ3 (750 nm≦λ3≦800 nm); a first divergent angle-converting element through which the first light flux passes; a second divergent angle-converting element through which the second light flux and the third light flux pass; and an objective optical element through which the first, second, and third light fluxes pass. Optical magnification m2 of the second divergent angle-converting element for the second light flux and optical magnification m3 of the second divergent angle-converting element for the third light flux are different from each other.

    摘要翻译： 一种光学拾取装置，包括：发射波长λ1（380nm <λ1<= 450nm）的第一光束的第一光源; 发射波长λ2（600nm <=λ2<= 700nm）的第二光束的第二光源; 发射具有波长λ3（750nm <λ3= 800nm）的第三光束的第三光源; 第一发光角转换元件，第一光束通过该第一发散角转换元件; 第二发光角转换元件，第二光束和第三光束通过该第二发散角转换元件; 以及第一，第二和第三光束通过的物镜光学元件。 用于第二光束的第二发散角转换元件的光学倍率m 2和用于第三光束的第二发散角转换元件的光学倍率m 3彼此不同。

    Optical pickup apparatus for recording or reproducing information for an optical information recording medium and objective lens for optical pickup apparatus
    9.
    发明授权
    Optical pickup apparatus for recording or reproducing information for an optical information recording medium and objective lens for optical pickup apparatus 失效
    用于记录或再现用于光学拾取装置的光学信息记录介质和物镜的信息的光学拾取装置

    公开(公告)号：US07333416B2

    公开(公告)日：2008-02-19

    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

    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。

    Optical pickup apparatus and objective lens
    10.
    发明授权
    Optical pickup apparatus and objective lens 有权
    光学拾取装置和物镜

    公开(公告)号：US07102980B2

    公开(公告)日：2006-09-05

    申请号：US09983682

    申请日：2001-10-25

    申请人： Shinichiro Saito ,  Katsuya Sakamoto

    发明人： Shinichiro Saito ,  Katsuya Sakamoto

    IPC分类号： G11B7/135

    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。