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公开(公告)号：US20120163156A1
公开(公告)日：2012-06-28
申请号：US13411653
申请日：2012-03-05
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , C03B2215/49 , G02B3/04 , G11B7/1374 , G11B7/139
摘要： A high-NA and thin objective lens which prevents occurrence of a crack during lens molding and can stably be molded is provided. The present invention is directed to an objective lens having an optical surface having power which is not negative. The objective lens is a single lens and is formed such that a flat portion which is provided at an outer peripheral portion and perpendicular to the optical axis is closer to a disc surface than the position of the top of an exit-side surface of the objective lens and such that the rate of change in sag of the exit-side surface is continuous across the entire region.
摘要翻译： 提供了防止在透镜成型期间发生裂纹并且可以稳定地模制的高NA和薄物镜。 本发明涉及具有不具有负极性的光学表面的物镜。 物镜是单个透镜，并且形成为使得设置在外周部并且垂直于光轴的平坦部分比目标的出射侧表面的顶部的位置更靠近盘表面 并且使得出射侧表面的下垂变化率在整个区域上是连续的。
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22.发明授权Optical system for compensating for spherical aberration and/or coma aberration in an optical pickup device and optical pickup device having the same 有权用于补偿光学拾取装置中的球面像差和/或彗形像差的光学系统和具有该光学系统的光学拾取装置公开(公告)号：US08179768B2
公开(公告)日：2012-05-15
申请号：US12679041
申请日：2008-09-19
IPC分类号： G11B7/00
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 three lens elements 33a to 33c. By moving in an optical axis direction, the two lens elements 33a and 33b included in the beam expander 33 adjust a focal point of a spot formed within an optical recording medium 28, and compensate a spherical aberration caused by the difference in depth between recording layers.
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。 扩束器33包括三个透镜元件33a至33c。 通过沿光轴方向移动，包括在扩束器33中的两个透镜元件33a和33b调节在光记录介质28内形成的光点的焦点，并补偿由记录层之间的深度差引起的球面像差 。
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公开(公告)号：US20120075978A1
公开(公告)日：2012-03-29
申请号：US13248038
申请日：2011-09-29
IPC分类号： G11B7/1353 , G02B27/42
CPC分类号： G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： An objective lens element that can suppress occurrence of an aberration is disclosed. Sawtooth-like diffraction structures having different height and cycles (pitches) are provided on an inner part R21 and an outer part R22, respectively. A curved surface M211 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the inner part R21, and a curved surface M212 extending at an intermediate level of recesses and projections of the sawtooth-like diffraction structure provided on the outer part R22 are smoothly connected to each other. Even when wavelength of the light source and/or the environmental temperature change, a phase shift does not occur between the inner part R21 and the outer part R22, and a decrease in diffraction efficiency and occurrence of an aberration can be suppressed.
摘要翻译： 公开了能够抑制像差的发生的物镜元件。 分别具有不同高度和周期（间距）的锯齿状衍射结构分别设置在内部部分R21和外部部分R22上。 在内部部件R21上设置的锯齿状衍射结构的凹部和突起的中间水平面延伸的曲面M211，以及设置在上述锯齿状衍射结构的中间水平的锯齿状衍射结构的中间水平面的弯曲面M212 外部部件R22彼此平滑地连接。 即使在光源的波长和/或环境温度发生变化的情况下，内部部件R21和外部部件R22之间也不会发生相位偏移，并且可以抑制衍射效率的降低和像差的发生。
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24.发明申请公开(公告)号：US20100254248A1
公开(公告)日：2010-10-07
申请号：US12679041
申请日：2008-09-19
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 three lens elements 33a to 33c. By moving in an optical axis direction, the two lens elements 33a and 33b included in the beam expander 33 adjust a focal point of a spot formed within an optical recording medium 28, and compensate a spherical aberration caused by the difference in depth between recording layers.
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。 扩束器33包括三个透镜元件33a至33c。 通过沿光轴方向移动，包括在扩束器33中的两个透镜元件33a和33b调节在光记录介质28内形成的光点的焦点，并补偿由记录层之间的深度差引起的球面像差 。
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公开(公告)号：US20120170439A1
公开(公告)日：2012-07-05
申请号：US13410313
申请日：2012-03-02
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（“ ד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。
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公开(公告)号：US20120163157A1
公开(公告)日：2012-06-28
申请号：US13411656
申请日：2012-03-05
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。
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27.发明申请公开(公告)号：US20100278030A1
公开(公告)日：2010-11-04
申请号：US12679049
申请日：2008-09-19
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。
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28.发明授权Diffractive optical element, objective optical system including the same, and optical pickup including the same 有权衍射光学元件，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
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。
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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
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。
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公开(公告)号：US07545583B2
公开(公告)日：2009-06-09
申请号：US11386788
申请日：2006-03-23
IPC分类号： G02B3/02
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。
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