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    Optical pickup device
    2.
    发明申请
    Optical pickup device 审中-公开
    光学拾取装置

    公开(公告)号：US20050007931A1

    公开(公告)日：2005-01-13

    申请号：US10882617

    申请日：2004-07-01

    申请人： Katsuya Sakamoto ,  Kiyoshi Yamashita ,  Kohei Ota ,  Yuichi Atarashi ,  Hidekazu Totsuka

    发明人： Katsuya Sakamoto ,  Kiyoshi Yamashita ,  Kohei Ota ,  Yuichi Atarashi ,  Hidekazu Totsuka

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

    CPC分类号： G11B7/1378 ,  G11B7/1275 ,  G11B7/1376 ,  G11B7/1398 ,  G11B2007/0006

    摘要： An optical pickup apparatus having a light source unit including a plurality of light emitting, a beam regulating element to regulate a light flux emitted from the light source unit so that the an angle of divergence of the light flux emitted from the light source unit is changed to a first direction and/or a second direction, wherein a distance from each of the light emitting element to a surface of a protective layer that protects the recording surface is constant regardless a type of the optical information recording medium.

    摘要翻译： 一种具有包括多个发光的光源单元的光学拾取装置，用于调节从光源单元发射的光束的光束调节元件，使得从光源单元发射的光束的发散角度改变 到第一方向和/或第二方向，其中从每个发光元件到保护记录表面的保护层的表面的距离是恒定的，而与所述光学信息记录介质的类型无关。

    Objective lens and optical pickup apparatus
    3.
    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。

    Objective lens for optical pick-up apparatus and optical pick-up apparatus
    4.
    发明授权
    Objective lens for optical pick-up apparatus and optical pick-up apparatus 失效
    用于光学拾取装置和光学拾取装置的物镜

    公开(公告)号：US06747812B2

    公开(公告)日：2004-06-08

    申请号：US10298008

    申请日：2002-11-18

    申请人： Kohei Ota ,  Hidekazu Totsuka ,  Yuichi Atarashi

    发明人： Kohei Ota ,  Hidekazu Totsuka ,  Yuichi Atarashi

    IPC分类号： G02B1318

    CPC分类号： G11B7/1392 ,  G11B7/1374 ,  G11B2007/0006

    摘要： An objective lens for use in an optical pickup apparatus in which first and second light sources are provided on a same flat surface, converges each of the light fluxes from the first and second light sources onto an information recording plane through each of transparent substrates of a first and second optical information recording mediums and has a coma aberration of 0.015 &lgr;1 rms or less when recording or reproducing information is conducted for the first optical information recording medium, and a coma aberration of 0.015 &lgr;2 rms or less when recording or reproducing information is conducted for the second optical information recording medium.

    摘要翻译： 一种用于光学拾取装置的物镜，其中第一和第二光源设置在相同的平面上，将来自第一和第二光源的每个光束通过每个透明基板收敛到信息记录平面上 第一和第二光学信息记录介质，并且当对第一光学信息记录介质进行记录或再现信息时具有0.015λ1rms或更小的彗形像差，并且当进行记录或再现信息时，彗差为0.015λ2rms或更小 用于第二光学信息记录介质。

    Optical pickup apparatus
    8.
    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。

    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
    10.
    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。