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1. 发明申请

US20060077791A1 Objective lens element and optical pickup device provided with its object lens element 审中-公开
标题翻译：设置有物镜的物镜元件和光拾取装置
公开(公告)号：US20060077791A1
公开(公告)日：2006-04-13
申请号：US11220843
申请日：2005-09-08
申请人： Hironari Takano , Michihiro Yamagata , Yasuhiro Tanaka
发明人： Hironari Takano , Michihiro Yamagata , Yasuhiro Tanaka
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G11B7/123 , G11B7/1353
摘要： An optical pickup device has an optical source 101 for emitting an optical beam, an objective lens element 103 positioned to receive the optical beam for focusing the beam on a medium 104, wherein a position of the optical source 101 relative to a position of the objective lens element 103 is fixed, a combined movement of the objective lens element 103 and the optical source 101 focuses the optical beam on the medium 104; and the objective lens element 103 satisfies the following condition: −0.300≦m≦−0.200, (1) where, m is an imaging magnification.
摘要翻译：光拾取装置具有用于发射光束的光源101，物镜103被定位成接收用于将光束聚焦在介质104上的光束，其中光源101相对于物镜位置的位置透镜元件103固定，物镜103和光源101的组合移动将光束聚焦在介质104上; 并且物镜元件103满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> -0.300 <= m <= -0.200，（1） line-formula description =“In-line Formulas”end =“tail”？>其中，m是成像倍率。

2. 发明申请

US20120170439A1 Objective Lens Element 有权
标题翻译：物镜元件
公开(公告)号：US20120170439A1
公开(公告)日：2012-07-05
申请号：US13410313
申请日：2012-03-02
申请人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Yoshiaki Komma
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Yoshiaki Komma
IPC分类号： G11B7/135
CPC分类号： G02B5/1876 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element having excellent compatibility with optical discs having different base material thicknesses is provided. The objective lens element has optically functional surfaces on an incident side and an exit side. At least either one of the optically functional surfaces on the incident side and the exit side includes a diffraction portion which satisfies at least either one of the following formulas (1) and (2): θ1×θ2
摘要翻译：提供了具有与具有不同基材厚度的光盘的良好兼容性的物镜元件。物镜元件在入射侧和出射侧具有光学功能表面。入射侧和出射侧的光学功能表面中的至少任一方包括满足下述式（1）和（2）中的至少一个的衍射部：＆lt; 1＆gt; 2＆lt; 0（“ ×“表示乘法）（1），（sin＆thetas; 2）/λ22= - （sin＆amp; tt; 1）/λ1（2），其中θ是具有提供最大值的衍射级的光束的衍射角在波长λ1下的衍射效率和＆amp; Thetas; 2是具有在波长λ2下提供最大衍射效率的衍射级的光束的衍射角。

3. 发明申请

US20120163157A1 Optical Element and Optical Pickup Device 审中-公开
标题翻译：光学元件和光学拾取装置
公开(公告)号：US20120163157A1
公开(公告)日：2012-06-28
申请号：US13411656
申请日：2012-03-05
申请人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Yoshiaki Komma
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Yoshiaki Komma
IPC分类号： G11B7/1374 , G02B5/18
CPC分类号： G11B7/1275 , G02B3/08 , G02B5/1866 , G02B5/1876 , G02B13/16 , G02B27/283 , G02B27/4216 , G02B27/4238 , G02B27/4266 , G11B7/1353 , G11B7/1367 , G11B7/13922 , G11B2007/0006
摘要： An optical element which can be shared by three wavelengths for BD, DVD, and CD and which is easily manufactured is provided. An objective lens system includes an optical element 1A and a converging lens element 1B. A first surface of the optical element 1A on an incident side is concentrically divided into a region 11 including a rotational symmetry axis, a region 12, and a region 13. On the optical element 1A, a periodic stair-like diffraction structure and a periodic sawtooth-like diffraction structure are provided. A second surface of the optical element 1A is divided into a region 21 including a rotational symmetry axis, a region 22, and a region 23. On the region 21, a sawtooth-like diffraction structure is provided. The converging lens element 1B converges light having passed through the optical element 1A, to form a spot on an information recording surface of an optical disc.
摘要翻译：提供了可以由BD，DVD和CD的三个波长共享并且容易制造的光学元件。物镜系统包括光学元件1A和会聚透镜元件1B。入射侧的光学元件1A的第一表面被同心地分成包括旋转对称轴，区域12和区域13的区域11.在光学元件1A上，周期性阶梯状衍射结构和周期性提供锯齿状衍射结构。光学元件1A的第二表面被分成包括旋转对称轴，区域22和区域23的区域21.在区域21上，提供锯齿状衍射结构。会聚透镜元件1B会聚已经通过光学元件1A的光，以在光盘的信息记录表面上形成点。

4. 发明申请

US20100278030A1 OPTICAL PICKUP OPTICAL SYSTEM AND OPTICAL PICKUP DEVICE HAVING THE SAME 有权
标题翻译：光学拾取光学系统和具有该光学系统的光学拾取器件
公开(公告)号：US20100278030A1
公开(公告)日：2010-11-04
申请号：US12679049
申请日：2008-09-19
申请人： Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi , Masahiro Birukawa
发明人： Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi , Masahiro Birukawa
IPC分类号： G11B7/135
CPC分类号： G11B7/13927 , G11B7/1378 , G11B7/1387 , G11B2007/0013 , G11B2007/13727
摘要： An optical system for optical pickup, which optical system is used for performing recording, reproducing, and/or erasing of information on an optical recording medium and has a simple configuration, is provided. An optical pickup device 1 includes a collimator lens system 23, a beam expander 33, and an objective lens system 34 that includes an S-SIL element 27b. The beam expander 33 includes a lens element 33c that is supported so as to be movable in a direction perpendicular to an optical axis. By moving the lens element 33c in the direction perpendicular to the optical axis, a coma aberration of a spot on a recording layer can be compensated in a state where the interval between a surface of an optical recording medium 28 and the S-SIL element 27b opposed thereto is maintained constant.
摘要翻译：提供了一种用于光学拾取器的光学系统，该光学系统用于在光学记录介质上执行信息的记录，再现和/或擦除并且具有简单的配置。光拾取装置1包括准直透镜系统23，光束扩展器33和包括S-SIL元件27b的物镜系统34。光束扩展器33包括透镜元件33c，该透镜元件被支撑为能够在垂直于光轴的方向上移动。通过在与光轴垂直的方向上移动透镜元件33c，可以在光记录介质28的表面与S-SIL元件27b之间的间隔的状态下补偿记录层上的斑点的彗形像差与之相对保持恒定。

5. 发明授权

US07801008B2 Diffractive optical element, objective optical system including the same, and optical pickup including the same 有权
$Diffractive optical element, objective optical system including the same, and optical pickup including the same$
标题翻译：衍射光学元件，包括该衍射光学元件的物镜光学系统和包括该衍射光学元件的光学拾取器
公开(公告)号：US07801008B2
公开(公告)日：2010-09-21
申请号：US11797209
申请日：2007-05-01
申请人： Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi
发明人： Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi
IPC分类号： G11B7/00
CPC分类号： G02B5/1814 , G02B27/4238 , G02B27/4294 , G11B7/1353 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： A diffractive optical element includes a first optical part and a second optical part bonded to each other with a bonded surface therebetween configured as a diffraction surface. In this diffractive optical element, the diffraction order of diffracted light with the largest quantity of light out of diffracted light for one of a plurality of kinds of laser beams obtained on the diffraction surface is different from the diffraction order for at least another laser beam.
摘要翻译：衍射光学元件包括第一光学部件和第二光学部件，所述第一光学部件和第二光学部件彼此接合，其间的接合表面被构造为衍射表面。在该衍射光学元件中，衍射面上得到的多种激光中的一种的衍射光的衍射光的衍射级别与至少另一种激光束的衍射级别不同。

6. 发明授权

US07782540B2 Optical head apparatus and optical information recording and reproduction apparatus 有权
标题翻译：光头装置和光信息记录和再现装置
公开(公告)号：US07782540B2
公开(公告)日：2010-08-24
申请号：US11620094
申请日：2007-01-05
申请人： Yasuhiro Tanaka , Tomohiko Sasano , Michihiro Yamagata , Daisuke Ogata
发明人： Yasuhiro Tanaka , Tomohiko Sasano , Michihiro Yamagata , Daisuke Ogata
IPC分类号： G02B13/22 , G02B9/12 , G02B9/14 , G02B9/04 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/1376 , G11B7/1378 , G11B7/13925 , G11B7/13927 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： Disclosed is an optical head apparatus comprising: a light source; a collimating means of converting a beam of light emitted from the light source into a substantially parallel beam of light; a focusing means of focusing the light onto an information medium surface; a beam splitting means of splitting the beam of light modulated by the information medium; and a light receiving means of receiving the light modulated by the information medium, wherein a lens having a negative power and a lens having a positive power are arranged in this order as viewed from the collimating means side between the collimating means and the focusing means, and at least either one of the lenses is moved along an optical axis to correct spherical aberration occurring on the information medium surface, and wherein the distance from the lens having the positive power to the focusing means is set substantially equal to the focal length of the lens having the positive power.
摘要翻译：公开了一种光头装置，包括：光源; 将从光源发射的光束转换为基本上平行的光束的准直装置; 将光聚焦到信息介质表面上的聚焦装置; 分束装置，用于分割由信息介质调制的光束; 以及光接收装置，其接收由所述信息介质调制的光，其中从所述准直装置和所述聚焦装置之间的准直装置侧观察，以所述顺序布置具有负光焦度的透镜和具有正光焦度的透镜，并且透镜中的至少一个沿光轴移动以校正在信息介质表面上发生的球面像差，并且其中从具有正功率的透镜到聚焦装置的距离被设定为基本上等于透镜具有正光焦度。

7. 发明申请

US20100172027A1 OPTICAL MEMBER 审中-公开
标题翻译：光学会员
公开(公告)号：US20100172027A1
公开(公告)日：2010-07-08
申请号：US12303594
申请日：2007-06-04
申请人： Kazuhiro Yamada , Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi , Kazuhlko Ishimaru , Motonobu Yoshikawa
发明人： Kazuhiro Yamada , Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi , Kazuhlko Ishimaru , Motonobu Yoshikawa
IPC分类号： G02B1/11
CPC分类号： G02B1/118 , G02B3/02 , G02B3/08
摘要： The present invention relates to an optical element and, more particularly relates to an optical element having at least one surface in which an antireflection concave-convex structure is formed.The present invention provides an optical member in which the generation of diffraction light and reflection is sufficiently suppressed and which has a structure that can be formed in a simple manner.On a first lens surface (10) of a lens 1, an antireflection concave-convex structure (11) including a plurality of cone convex portions (12) regularly arranged is formed. The antireflection concave-convex structure (11) is for suppressing reflection of light having a wavelength equal to or larger than a cycle of the cone convex portions (12). The antireflection concave-convex structure (11) is formed so that the cycle and/or a height of the structure units differ among regions of the first surface (10).
摘要翻译：光学元件技术领域本发明涉及一种光学元件，更具体地说，涉及具有形成有抗反射凹凸结构的至少一个面的光学元件。本发明提供了一种光学部件，其中衍射光和反射的产生被充分抑制，并且具有能够以简单的方式形成的结构。在透镜1的第一透镜面（10）上形成有规则排列的多个锥形凸部（12）的防反射凹凸结构（11）。抗反射凹凸结构（11）用于抑制波长等于或大于锥形凸部（12）的周期的光的反射。防反射凹凸结构（11）形成为使得结构单元的周期和/或高度在第一表面（10）的区域之间不同。

8. 发明授权

US07545583B2 Optical lens having antireflective structure 有权
标题翻译：具有抗反射结构的光学透镜
公开(公告)号：US07545583B2
公开(公告)日：2009-06-09
申请号：US11386788
申请日：2006-03-23
申请人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata
IPC分类号： G02B3/02
CPC分类号： G02B1/11 , G02B5/045
摘要： An optical lens in which reflection is suppressed is provided by providing the optical lens with: a convex lens surface having, when the angle between a plane in contact with the lens surface and a direction perpendicular to the optical axis is an inclination angle, a maximum inclination angle of not less than 35 degrees and less than 90 degrees; and an antireflective structure provided on the lens surface and including structural elements that have a predetermined shape and are periodically arranged in an array form with a pitch smaller than the shortest wavelength of the incident light.
摘要翻译：通过提供光学透镜来提供抑制反射的光学透镜：凸透镜表面，当与透镜表面接触的平面与垂直于光轴的方向之间的角度为倾斜角时，具有最大值倾斜角度不小于35度且小于90度; 以及设置在透镜表面上并且包括具有预定形状并且以比入射光的最短波长小的间距排列成阵列形式的结构元件的抗反射结构。

9. 发明申请

US20080165660A1 OBJECTIVE LENS SYSTEM AND OPTICAL PICKUP INCLUDING THE SAME 审中-公开
标题翻译：目标镜头系统和光学拾取，包括它们
公开(公告)号：US20080165660A1
公开(公告)日：2008-07-10
申请号：US11969417
申请日：2008-01-04
申请人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Fumitomo Yamasaki
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Fumitomo Yamasaki
IPC分类号： G11B7/135
CPC分类号： G11B7/1275 , G11B7/1374 , G11B2007/0006
摘要： The present invention provides an objective lens system for forming a spot of a laser beam of λ wavelength on a first information recording surface through a disc protective layer having a first thickness and a second information recording surface through a disc protective layer having a second thickness greater than the first thickness, the objective lens system including: an objective lens having at least one diffraction structure for deflecting incident light by diffraction and at least two refractive surfaces for deflecting the incident light by refraction, wherein the diffraction structure divides the incident light into m1th order diffracted light (m1 is an integer) corresponding to the first information recording surface and m2th order diffracted light (m2 is an integer different from m1) corresponding to the second information recording surface and has negative power to diverge the m2th order diffracted light.
摘要翻译：本发明提供一种物镜系统，用于通过具有第一厚度的盘保护层和第二信息记录表面通过具有第二厚度的盘保护层在第一信息记录表面上形成λ波长的激光束的点物镜系统包括：具有至少一个用于通过衍射偏转入射光的衍射结构的物镜和用于通过折射偏转入射光的至少两个折射表面，其中衍射结构将入射光分为m1 对应于第一信息记录表面的第二级衍射光（m1是整数）和与第二级对应的第二级衍射光（m2是不同于m1的整数）信息记录表面并且具有负功率以分散m2 /次级衍射光。

10. 发明申请

US20070258145A1 Diffractive optical element, objective optical system including the same, and optical pickup including the same 有权
$Diffractive optical element, objective optical system including the same, and optical pickup including the same$
标题翻译：衍射光学元件，包括该衍射光学元件的物镜光学系统和包括该衍射光学元件的光学拾取器
公开(公告)号：US20070258145A1
公开(公告)日：2007-11-08
申请号：US11797209
申请日：2007-05-01
申请人： Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi
发明人： Yasuhiro Tanaka , Michihiro Yamagata , Katsuhiko Hayashi
IPC分类号： G02B27/44
CPC分类号： G02B5/1814 , G02B27/4238 , G02B27/4294 , G11B7/1353 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： A diffractive optical element includes a first optical part and a second optical part bonded to each other with a bonded surface therebetween configured as a diffraction surface. In this diffractive optical element, the diffraction order of diffracted light with the largest quantity of light out of diffracted light for one of a plurality of kinds of laser beams obtained on the diffraction surface is different from the diffraction order for at least another laser beam.
摘要翻译：衍射光学元件包括第一光学部件和第二光学部件，所述第一光学部件和第二光学部件彼此接合，其间的接合表面被构造为衍射表面。在该衍射光学元件中，衍射面上得到的多种激光中的一种的衍射光的衍射光的衍射级别与至少另一种激光束的衍射级别不同。

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