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    Objective lens and optical pickup apparatus
    1.
    发明申请
    Objective lens and optical pickup apparatus 审中-公开
    物镜和光学拾取装置

    公开(公告)号：US20060077862A1

    公开(公告)日：2006-04-13

    申请号：US11245188

    申请日：2005-10-07

    申请人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi ,  Hidekazu Totsuka

    发明人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi ,  Hidekazu Totsuka

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1374 ,  G11B2007/0006

    摘要： An objective lens for an optical pickup apparatus includes: one optical surface in an aspherical shape including a central area for converging the first and second light fluxes having a first area and the second area, and a peripheral area for converging the first light flux. The central area includes a first diffractive structure. The first diffractive structure faces an outer side of the objective lens in the first area and faces an inner side of the objective lens in the second area. The peripheral area is an optical surface which makes a light flux passing through the peripheral area reach to a position apart from the optical axis on an information recording surface of the second optical information recording medium when the optical pickup apparatus records or reproduces information on the second optical information recording medium using the second light flux.

    摘要翻译： 一种用于光学拾取装置的物镜包括：一个非球面形状的光学表面，包括用于会聚具有第一区域和第二区域的第一和第二光束的中心区域和用于会聚第一光通量的周边区域。 中心区域包括第一衍射结构。 第一衍射结构在第一区域中面向物镜的外侧，并且在第二区域中面对物镜的内侧。 外围区域是光学表面，当光学拾取装置在第二光学信息记录介质的信息记录表面上记录或再现第二光信息记录介质上的信息时，使得穿过周边区域的光通量在第二光学信息记录介质的信息记录表面上到达远离光轴的位置 使用第二光通量的光信息记录介质。

    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：US20090196149A1

    公开(公告)日：2009-08-06

    申请号：US11663431

    申请日：2006-11-06

    申请人： Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

    发明人： Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1374 ,  G11B7/08517 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925 ,  G11B7/1398 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： In order to provide an optical pickup apparatus that has a relatively simple configuration and that can carry out recording and/or reproduction of information in a s compatible manner for different optical information storage medium, the optical surface of the first objective lens OBJ1 is formed only by a refracting surface, and hence it is possible to form it at a low cost even if it is made of glass. In addition, said first objective lens OBJ1 can be designed by optimizing it for the first light flux with the wavelength λ1 and the protective substrate t1 of said first optical disk OD1. On the other hand, while the second objective lens OBJ2 is used commonly for both the first light flux with a wavelength λ1 and the second light flux with a wavelength λ2, when the protective substrate t2 of the second optical disk OD2 and the protective substrate t3 of the third optical disk OD3 are the same, there is no need to consider the difference in the thickness of the protective substrate, and hence the design is easy and it is possible to produce at a low cost.

    摘要翻译： 为了提供具有相对简单的配置并且可以以不同的光学信息存储介质的兼容方式进行信息的记录和/或再现的光学拾取装置，第一物镜OBJ1的光学表面仅由 折射表面，因此即使由玻璃制成也可以低成本地形成。 此外，所述第一物镜OBJ1可以通过对具有波长λ1的第一光束和所述第一光盘OD1的保护基板t1进行优化来设计。 另一方面，当第二物镜OBJ2同时用于具有波长λ1的第一光通量和波长λ2的第二光通量时，当第二光盘OD2的保护基板t2和保护基板t3 的第三光盘OD3是相同的，不需要考虑保护性基板的厚度的差异，因此设计容易，并且可以以低成本生产。

    Optical pickup device and objective lens used in the same
    6.
    发明授权
    Optical pickup device and objective lens used in the same 失效
    光拾取装置与物镜相同

    公开(公告)号：US07969854B2

    公开(公告)日：2011-06-28

    申请号：US12320697

    申请日：2009-02-02

    申请人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi

    发明人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi

    IPC分类号： G11B7/135

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

    摘要： An optical system has an optical functional surface including a common region used for conducting information recording and/or reproducing for both of a first optical information recording medium and a second optical information recording medium. The common region comprises a refractive surface of an imaginary basic aspherical surface and a optical path difference providing structure in which plural ring-shapes zones are separated around the center of an optical axis and neighboring ring-shaped zones are displaced to each other in a direction of an optical axis so as to cause an optical path difference obtained by multiplying a predetermined wavelength λs (λ1

    摘要翻译： 光学系统具有包括用于对第一光学信息记录介质和第二光学信息记录介质进行信息记录和/或再现的公共区域的光学功能表面。 公共区域包括假想基本非球面的折射表面和光程差提供结构，其中多个环形区域围绕光轴的中心分开，并且相邻的环形区域沿着方向 以使得通过将预定波长λs（λ1<λs<λ2）乘以几乎整数而获得的光程差而导致。 假想的基本非球面的折射表面被构造成使得第一信息记录介质上的球面像差变得低于第二信息记录介质上的球面像差。

    Optical pickup apparatus
    7.
    发明授权
    Optical pickup apparatus 失效
    光拾取装置

    公开(公告)号：US07668066B2

    公开(公告)日：2010-02-23

    申请号：US11663299

    申请日：2006-11-06

    申请人： Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

    发明人： Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925 ,  G11B7/1398 ,  G11B2007/0006

    摘要： An optical pickup apparatus for information recording and/or reproduction on different optical information recording media with compatibility among these media, the optical surface of a first objective lens and the optical surface of a second objective lens are formed only of a refractive surface. The second objective lens is used in common for the first light flux with a wavelength of λ1 and the second light flux with a wavelength of λ2, but in the case where the protective substrate t2 of the second optical information recording medium and the protective substrate t3 of the third optical information recording medium are the same, it is not necessary to take the difference in thickness of the protective substrate into consideration. Chromatic aberration based on the difference in wavelength between the first light flux and the second light flux can be corrected by displacing the second coupling lens.

    摘要翻译： 用于在这些介质之间具有兼容性的不同光学信息记录介质上的信息记录和/或再现的光学拾取装置，第一物镜的光学表面和第二物镜的光学表面仅由折射表面形成。 对于波长为λ1的第一光束和波长为λ2的第二光束，第二物镜共同使用，但是在第二光信息记录介质的保护基板t2和保护基板t3的情况下 第三光信息记录介质的厚度相同时，不需要考虑保护基板的厚度差。 可以通过移动第二耦合透镜来校正基于第一光束和第二光束之间的波长差的色像差。

    Optical element having a refractive function and an optical path difference providing function
    8.
    发明授权
    Optical element having a refractive function and an optical path difference providing function 有权
    具有折射功能和光程差提供功能的光学元件

    公开(公告)号：US07508745B2

    公开(公告)日：2009-03-24

    申请号：US10263824

    申请日：2002-10-04

    申请人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi

    发明人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi

    IPC分类号： G11B7/00

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

    摘要： An optical system has an optical functional surface including a common region used for conducting information recording and/or reproducing for both of a first optical information recording medium and a second optical information recording medium. The common region comprises a refractive surface of an imaginary basic aspherical surface and a optical path difference providing structure in which plural ring-shapes zones are separated around the center of an optical axis and neighboring ring-shaped zones are displaced to each other in a direction of an optical axis so as to cause an optical path difference obtained by multiplying a predetermined wavelength λs (λ1

    摘要翻译： 光学系统具有包括用于对第一光学信息记录介质和第二光学信息记录介质进行信息记录和/或再现的公共区域的光学功能表面。 公共区域包括假想基本非球面的折射表面和光程差提供结构，其中多个环形区域围绕光轴的中心分开，并且相邻的环形区域沿着方向 以使得通过将预定波长lambdas（λ1

    Optical pickup apparatus
    9.
    发明申请
    Optical pickup apparatus 失效
    光拾取装置

    公开(公告)号：US20090196147A1

    公开(公告)日：2009-08-06

    申请号：US11663299

    申请日：2006-11-06

    申请人： Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

    发明人： Yuichi Atarashi ,  Kohei Ota ,  Junji Hashimura ,  Kiyono Ikenaka

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925 ,  G11B7/1398 ,  G11B2007/0006

    摘要： An optical pickup apparatus for information recording and/or reproduction on different optical information recording media with compatibility among these media, the optical surface of a first objective lens and the optical surface of a second objective lens are formed only of a refractive surface. The second objective lens is used in common for the first light flux with a wavelength of λ1 and the second light flux with a wavelength of λ2, but in the case where the protective substrate t2 of the second optical information recording medium and the protective substrate t3 of the third optical information recording medium are the same, it is not necessary to take the difference in thickness of the protective substrate into consideration. Chromatic aberration based on the difference in wavelength between the first light flux and the second light flux can be corrected by displacing the second coupling lens.

    摘要翻译： 用于在这些介质之间具有兼容性的不同光学信息记录介质上的信息记录和/或再现的光学拾取装置，第一物镜的光学表面和第二物镜的光学表面仅由折射表面形成。 第二物镜用于波长为λ1的第一光束和波长为λ2的第二光通量，但是在第二光学信息记录介质和保护基板t3的保护基板t2的情况下 第三光信息记录介质的厚度相同时，不需要考虑保护基板的厚度差。 可以通过移动第二耦合透镜来校正基于第一光束和第二光束之间的波长差的色像差。

    Optical pickup device and objective lens used in the same
    10.
    发明申请
    Optical pickup device and objective lens used in the same 失效
    光拾取装置与物镜相同

    公开(公告)号：US20090147657A1

    公开(公告)日：2009-06-11

    申请号：US12320697

    申请日：2009-02-02

    申请人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi

    发明人： Kiyono Ikenaka ,  Kohei Ota ,  Yuichi Atarashi

    IPC分类号： G11B7/00

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

    摘要： An optical system has an optical functional surface including a common region used for conducting information recording and/or reproducing for both of a first optical information recording medium and a second optical information recording medium. The common region comprises a refractive surface of an imaginary basic aspherical surface and a optical path difference providing structure in which plural ring-shapes zones are separated around the center of an optical axis and neighboring ring-shaped zones are displaced to each other in a direction of an optical axis so as to cause an optical path difference obtained by multiplying a predetermined wavelength λs (λ1

    摘要翻译： 光学系统具有包括用于对第一光学信息记录介质和第二光学信息记录介质进行信息记录和/或再现的公共区域的光学功能表面。 公共区域包括假想基本非球面的折射表面和光程差提供结构，其中多个环形区域围绕光轴的中心分开，并且相邻的环形区域沿着方向 以使得通过将预定波长lambdas（λ1