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    OPTICAL ELEMENT FOR OPTICAL PICKUP DEVICE, OPTICAL PICKUP DEVICE AND METHOD FOR ASSEMBLING OPTICAL PICKUP DEVICE
    1.
    发明申请
    OPTICAL ELEMENT FOR OPTICAL PICKUP DEVICE, OPTICAL PICKUP DEVICE AND METHOD FOR ASSEMBLING OPTICAL PICKUP DEVICE 审中-公开
    用于光学拾取器件的光学元件，光学拾取器件和用于组装光学拾取器件的方法

    公开(公告)号：US20100067356A1

    公开(公告)日：2010-03-18

    申请号：US12519718

    申请日：2007-12-07

    申请人： Hideyuki Fujii ,  Kohei Ota ,  Tohru Kimura ,  Kentarou Nakamura

    发明人： Hideyuki Fujii ,  Kohei Ota ,  Tohru Kimura ,  Kentarou Nakamura

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1374 ,  G11B7/08582 ,  G11B7/0925 ,  G11B7/13922 ,  G11B7/22 ,  G11B2007/0006

    摘要： An optical element for an optical pickup device which can record and/or reproduce information interchangeably with an optical disc while correcting coma satisfactorily, and a compact optical pickup device employing that optical element and exhibiting excellent energy saving. In the optical element for an optical pickup device where a first objective lens portion and a second objective lens portion are formed integrally, one of the first objective lens portion and the second objective lens portion satisfies a relation |HCM|/|TCM| 0.3. The HCM represents the third-order angle of view coma sensitivity in the first objective lens portion or the second objective lens portion, and the TMC represents the third-order inclination angle coma sensitivity in the first objective lens portion or the second objective lens portion.

    摘要翻译： 一种用于光学拾取装置的光学元件，其可以在令人满意地校正彗差的同时，与光盘互换地记录和/或再现信息，以及采用该光学元件的紧凑型光学拾取装置并且显示出优异的节能。 在第一物镜部分和第二物镜部分整体形成的用于光学拾取装置的光学元件中，第一物镜部分和第二物镜部分之一满足关系| HCM | / | TCM | <0.3 而满足关系| HCM | / | TCM |> 0.3。 HCM表示第一物镜部分或第二物镜部分的三阶视角彗形像差，TMC表示第一物镜部分或第二物镜部分中的三阶角度彗形像差。

    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 pick-up apparatus
    3.
    发明授权
    Optical pick-up apparatus 失效
    光学拾取装置

    公开(公告)号：US07903528B2

    公开(公告)日：2011-03-08

    申请号：US11775007

    申请日：2007-07-09

    申请人： Tohru Kimura ,  Kohei Ota ,  Kiyono Ikenaka

    发明人： Tohru Kimura ,  Kohei Ota ,  Kiyono Ikenaka

    IPC分类号： G11B7/00

    CPC分类号： G02B27/0068 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/0013

    摘要： An optical pickup apparatus for conducting recording and/or reproducing information for a first optical information recording medium including at least a transparent protective substrate, a first information recording surface, and a second information recording surface which are laminated in this order from a light source side along an optical axis, comprising: a first light source to emit a light flux having a wavelength of λ1 (380 nm≦λ1≦450 nm); an objective lens to converge the light flux onto the first optical information recording medium; a spherical aberration correcting structure to correct a spherical aberration caused in a converged spot on the first and second information recording surfaces due to a difference in thickness between the thickness to the first information recording surface and the thickness to the second information recording surface.

    摘要翻译： 一种用于对包括至少透明保护基板，第一信息记录表面和第二信息记录表面的第一光学信息记录介质进行记录和/或再现信息的光学拾取装置，其从光源侧依次层叠 沿着光轴，包括：第一光源，用于发射波长为λ1（380nm＆nlE;λ1＆nlE; 450nm）的光束; 用于将光束会聚到第一光学信息记录介质上的物镜; 球面像差校正结构，用于校正由于第一信息记录表面的厚度与第二信息记录表面的厚度之间的厚度差，在第一和第二信息记录表面上的会聚点引起的球面像差。

    Objective lens for pickup and light pickup apparatus
    7.
    发明授权
    Objective lens for pickup and light pickup apparatus 有权
    用于拾取和拾光装置的物镜

    公开(公告)号：US06411442B1

    公开(公告)日：2002-06-25

    申请号：US09653942

    申请日：2000-09-01

    申请人： Kohei Ota ,  Tohru Kimura

    发明人： Kohei Ota ,  Tohru Kimura

    IPC分类号： G02B300

    CPC分类号： G11B7/1353 ,  G02B27/0031 ,  G02B27/0037 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/13727

    摘要： An objective lens for use in an optical pickup apparatus to record or reproduce information in an optical information recording medium, comprises an aspheric surface, wherein the following conditional formula is satisfied: 1.1≦d1/f≦3 where d1 represents axial lens thickness and f represents a focal length.

    摘要翻译： 一种用于光学拾取装置中用于在光学信息记录介质中记录或再现信息的物镜包括非球面，其中满足以下条件式：1.1 <= d1 / f <= 3其中d1表示轴向透镜厚度 f表示焦距。

    Objective Lens and Optical Pickup Apparatus
    8.
    发明申请
    Objective Lens and Optical Pickup Apparatus 审中-公开
    物镜和光学拾取器

    公开(公告)号：US20100208567A1

    公开(公告)日：2010-08-19

    申请号：US12680192

    申请日：2008-10-02

    申请人： Kentarou Nakamura ,  Tohru Kimura

    发明人： Kentarou Nakamura ,  Tohru Kimura

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1374 ,  G02B3/04 ,  G02B27/0025 ,  G11B7/1392 ,  G11B2007/0006

    摘要： An objective lens for an optical pickup apparatus is disclosed that can record and/or reproduce information compatibly for different optical discs with stability regardless of an environmental temperature change, in spite of its simple structure, and provides an optical pickup apparatus employing the objective lens. The objective lens includes: an optical surface which at least includes a central area, a peripheral area, and a most peripheral area. The objective lens is a single lens formed of plastic. The central area includes a first optical path difference providing structure. The peripheral area includes a second optical path difference providing structure. The objective lens further includes an optical path difference providing structure for correcting a temperature characteristic, where the optical path difference providing structure corrects an aberration caused by a temperature change of the objective lens.

    摘要翻译： 公开了一种用于光学拾取装置的物镜，尽管其结构简单，它可以稳定地记录和/或再现不同光盘的信息，而不管环境温度变化如何，并提供采用该物镜的光学拾取装置。 物镜包括：光学表面，其至少包括中心区域，周边区域和最外围区域。 物镜是由塑料制成的单透镜。 中心区域包括第一光程差提供结构。 外围区域包括第二光程差提供结构。 物镜还包括用于校正温度特性的光程差提供结构，其中光程差提供结构校正由物镜的温度变化引起的像差。

    OPTICAL PICK-UP APPARATUS
    9.
    发明申请
    OPTICAL PICK-UP APPARATUS 失效
    光学拾取装置

    公开(公告)号：US20080013433A1

    公开(公告)日：2008-01-17

    申请号：US11775007

    申请日：2007-07-09

    申请人： Tohru Kimura ,  Kohei Ota ,  Kiyono Ikenaka

    发明人： Tohru Kimura ,  Kohei Ota ,  Kiyono Ikenaka

    IPC分类号： G02B13/18

    CPC分类号： G02B27/0068 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/0013

    摘要： An optical pickup apparatus for conducting recording and/or reproducing information for a first optical information recording medium including at least a transparent protective substrate, a first information recording surface, and a second information recording surface which are laminated in this order from a light source side along an optical axis, comprising: a first light source to emit a light flux having a wavelength of λ1 (380 nm≦λ1≦450 nm); an objective lens to converge the light flux onto the first optical information recording medium; a spherical aberration correcting structure to correct a spherical aberration caused in a converged spot on the first and second information recording surfaces due to a difference in thickness between the thickness to the first information recording surface and the thickness to the second information recording surface.

    摘要翻译： 一种用于对包括至少透明保护基板，第一信息记录表面和第二信息记录表面的第一光学信息记录介质进行记录和/或再现信息的光学拾取装置，其从光源侧依次层叠 沿着光轴，包括：发射波长为λ1（380nm <λ1= 450nm）的光束的第一光源; 用于将光束会聚到第一光学信息记录介质上的物镜; 球面像差校正结构，用于校正由于第一信息记录表面的厚度与第二信息记录表面的厚度之间的厚度差，在第一和第二信息记录表面上的会聚点引起的球面像差。