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公开(公告)号：US20080049587A1
公开(公告)日：2008-02-28
申请号：US11889674
申请日：2007-08-15
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/13925 , G11B2007/0006
摘要： A complex optical element includes a first optical portion and a second optical portion which are made of materials different from each other. The second optical portion is bonded to an optical functional face of the first optical portion. A concavoconvex face part is formed at the central part of the bond area between the first optical portion and the second optical portion.
摘要翻译： 复合光学元件包括由彼此不同的材料制成的第一光学部分和第二光学部分。 第二光学部分接合到第一光学部分的光学功能面。 在第一光学部分和第二光学部分之间的接合区域的中心部分处形成凹凸面部分。
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公开(公告)号：US07920455B2
公开(公告)日：2011-04-05
申请号：US11889674
申请日：2007-08-15
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/13925 , G11B2007/0006
摘要： A complex optical element includes a first optical portion and a second optical portion which are made of materials different from each other. The second optical portion is bonded to an optical functional face of the first optical portion. A concavoconvex face part is formed at the central part of the bond area between the first optical portion and the second optical portion.
摘要翻译： 复合光学元件包括由彼此不同的材料制成的第一光学部分和第二光学部分。 第二光学部分接合到第一光学部分的光学功能面。 在第一光学部分和第二光学部分之间的接合区域的中心部分处形成凹凸面部分。
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公开(公告)号：US08576685B2
公开(公告)日：2013-11-05
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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公开(公告)号：US08531926B2
公开(公告)日：2013-09-10
申请号：US13411645
申请日：2012-03-05
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B7/1374 , G11B7/1392 , G11B7/24038 , G11B2007/0006 , G11B2007/0013
摘要： An optical system for optical pickup includes a magnification conversion optical element moving along an optical axis direction in accordance with each of optical recording medium recording surfaces, and an objective lens element converging a light beam incident through the magnification conversion optical element, to form a spot on a corresponding one of the recording surfaces, and satisfies the following formula: 4.0×10−4
摘要翻译： 用于光学拾取器的光学系统包括根据每个光学记录介质记录表面沿着光轴方向移动的放大率转换光学元件和会聚入射通过倍率转换光学元件的光束的物镜元件，以形成点 在相应的一个记录表面上，满足下列公式：4.0×10-4
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5.发明授权Optical system for compensating for coma aberration and/or spherical 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彗形像差和/或球面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：US08233372B2
公开(公告)日：2012-07-31
申请号：US12679049
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 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。 通过沿与光轴垂直的方向移动透镜元件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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公开(公告)号：US20120163154A1
公开(公告)日：2012-06-28
申请号：US13411636
申请日：2012-03-05
IPC分类号： G11B7/1374 , G02B5/18
CPC分类号： G11B7/139 , G02B3/04 , G02B3/08 , G02B5/1814 , G11B7/1374
摘要： An optical element which has optical steps each providing a phase difference to transmitted light and has low light amount loss and a high efficiency is provided. The optical element includes a symmetry axis, a plurality of optically functional surfaces which are ring-shaped regions around the symmetry axis, and a plurality of wall regions connecting the optically functional surfaces to each other. The optically functional surfaces and the wall regions constitute the optical steps. On a cross-section taken by, as a cutting plane, a plane including the symmetry axis, the contour line of each wall region is substantially parallel to a light beam which is incident on the optically functional surface on the outer side and passes near the wall region. The maximum value of the angle between the symmetry axis and the light beam passing near the wall region is equal to or more than 25 degrees.
摘要翻译： 提供一种光学元件，其具有对透射光提供相位差并具有低光损失和高效率的光学步骤。 光学元件包括对称轴，围绕对称轴的环形区域的多个光学功能表面和将光学功能表面彼此连接的多个壁区域。 光学功能表面和壁区域构成光学步骤。 在通过作为切割平面的包括对称轴的平面截取的横截面上，每个壁区域的轮廓线基本上平行于入射在外侧上的光学功能表面上的光束，并且靠近 墙区域。 对称轴与靠近壁区域的光束之间的角度的最大值等于或大于25度。
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公开(公告)号：US20120075982A1
公开(公告)日：2012-03-29
申请号：US13248042
申请日：2011-09-29
CPC分类号： G11B7/1374 , G02B5/1814 , G02B5/1876 , G11B7/1275 , G11B7/1353 , G11B7/13922 , G11B2007/0006
摘要： An optical pickup device is provided which is compatible with at least two types of optical disc standards having different NAs and which controls an effective NA when a light beam for an optical disc standard having a relatively small NA is converged, thereby forming a desired spot. An inner part 131B and an outer part 131F of an objective lens element 143 are provided with diffraction structures different from each other. A condition (1), DO11×DO12>0, and a condition (2), DO21×DO22
摘要翻译： 提供了一种光拾取装置，其与具有不同NAs的至少两种类型的光盘标准兼容，并且当具有相对较小的NA的光盘标准的光束会聚时，控制有效NA，从而形成所需的斑点。 物镜143的内部部分131B和外部部分131F设置有彼此不同的衍射结构。 满足条件（1），DO11×DO12> 0和条件（2），DO21×DO22 <0（DO11（DO21）是衍射效率最高的衍射光束的衍射级别 由内部衍射结构衍射的波长λ1（λ2）和DO12（DO22）是衍射结构衍射的波长λ1（λ2）的光束之间衍射效率最高的衍射光束的衍射级数 在外部）。
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公开(公告)号：US07656769B2
公开(公告)日：2010-02-02
申请号：US11631953
申请日：2006-02-17
IPC分类号： G11B7/135
CPC分类号： G11B7/1275 , G02B3/04 , G02B3/08 , G02B27/144 , G02B27/145 , G11B7/1353 , G11B7/1369 , G11B7/1378 , G11B7/13922 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup (1) includes a light source (6) capable of emitting laser beams of various wavelengths and an objective optical system (2). The objective optical system (2) includes at least two wavefront conversion surfaces (13a) and (16a) and an objective lens (10). The at least two wavefront conversion surfaces (13a) and (16a) convert a wavefront of any laser beam entered therein into a different wavefront in response to the kind of an optical information recording medium (3) corresponding to the laser light. The objective lens (10) focuses the laser beam came out of the wavefront conversion surface (16a) on an optical information recording surface (3R). The optical pickup (1) satisfies the following condition for every wavelength of the corresponding laser beams: |SCMAX|
摘要翻译： 光拾取器（1）包括能够发射各种波长的激光束的光源（6）和物镜光学系统（2）。 物镜光学系统（2）包括至少两个波前转换表面（13a）和（16a）和物镜（10）。 响应于对应于激光的光学信息记录介质（3）的种类，至少两个波前转换表面（13a）和（16a）将其中输入的任何激光束的波前转换成不同的波阵面。 物镜（10）将激光束聚焦在光学信息记录表面（3R）上的波前转换表面（16a）外。 对于相应激光束的每个波长，光学拾取器（1）满足以下条件：| SCMAX | 其中SCMAX是针对物镜光学系统（2）的正弦状态的违规的最大值。
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公开(公告)号：US20070291619A1
公开(公告)日：2007-12-20
申请号：US11808930
申请日：2007-06-13
IPC分类号： G11B7/00
CPC分类号： G11B7/1376 , G11B7/13925 , G11B2007/0013
摘要： An optical pickup 1 includes a collimator lens 13 for changing the shape of a laser light by moving on the optical axis AX from a standard point. An objective lens 15 is set so as to form a spot of which size when the collimator lens 13 is located at the standard point is minimum at a point a distance apart from the surface on a light source 10 side of an information recording medium 20, the distance being a thickness to the designed center defined by an expression (1): Lc=(L0+Ln)/2 (1), wherein Lc is a thickness to the designed center; L0 is a distance between the surface on the light source side of the information recoding medium and an information recording face located nearest to the surface; and Ln is a distance between the surface on the light source side of the information recording medium and an information recording face located farthest from the surface.
摘要翻译： 光拾取器1包括准直透镜13，用于通过在标准点上在光轴AX上移动来改变激光的形状。 当在信息记录介质20的光源10侧的距离一定距离的点处，当准直透镜13位于标准点处时，物镜15被设定为形成尺寸的点， 该距离是由表达式（1）定义的设计中心的厚度：<？in-line-formula description =“In-line Formulas”end =“lead”？> L = （1），<？in-line-formula description =“In-line Formulas”end =“tail”？>其中L（0） c是设计中心的厚度; 信息记录介质的光源侧的表面与位于表面最近的信息记录面之间的距离为L <0 < L sub是信息记录介质的光源侧的表面与距离表面最远的信息记录面之间的距离。
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10.发明授权Optical pickup lens device and information recording and reproducing device using the same 有权光学拾取镜头装置及其使用的信息记录和再现装置公开(公告)号：US07248420B2
公开(公告)日：2007-07-24
申请号：US11385765
申请日：2006-03-22
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1376
摘要： An optical pickup lens device includes, in the order from the light source side, a collimating lens for converting a bundle of rays into parallel rays or predetermined convergent or divergent rays, the collimating lens being movably held along a direction of an optical axis of a bundle of rays emitted from a light source; an aberration correcting element for allowing a bundle of rays emitted from the collimating lens to be transmitted therethrough; and an objective lens element having a numerical aperture of 0.8 or more, and converging a bundle of rays coming from the aberration correcting element onto the information recording medium to form a spot. The aberration correcting element and the objective lens element are integrally held together in a direction orthogonal to the optical axis so as to perform tracking on the information recording medium, and satisfy predetermined conditions.
摘要翻译： 一种光学拾取透镜装置，以光源侧的顺序包括用于将一束光线转换为平行光线或预定的会聚或发散光线的准直透镜，准直透镜沿着光轴的光轴方向可动地保持 从光源发射的光束; 用于允许从准直透镜发射的光束穿过其中的像差校正元件; 以及具有0.8以上的数值孔径的物镜元件，并且将来自像差校正元件的光束会聚在信息记录介质上以形成点。 像差校正元件和物镜元件在与光轴正交的方向上一体地保持在一起，以在信息记录介质上执行跟踪，并满足预定条件。
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