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11. 发明授权

US08233372B2 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
标题翻译：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
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： G11B7/00
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。

12. 发明授权

US08233371B2 Objective lens, optical head and optical disc device 失效
标题翻译：物镜，光头和光盘装置
公开(公告)号：US08233371B2
公开(公告)日：2012-07-31
申请号：US12159425
申请日：2006-12-27
申请人： Fumitomo Yamasaki , Katsuhiko Hayashi , Sadao Mizuno , Hideki Aikoh
发明人： Fumitomo Yamasaki , Katsuhiko Hayashi , Sadao Mizuno , Hideki Aikoh
IPC分类号： G11B7/00
CPC分类号： G02B9/10 , G02B3/08 , G02B13/18 , G11B7/1275 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： Provides an objective lens, an optical head and an optical disc apparatus (drive) capable of compensating for various types of aberrations including wavelength changes for a plurality of types of optical discs including high density optical discs, DVDs and CDs with a good wavelength dispersion compensation ability and thus capable of providing good recording or reproduction characteristics.The objective lens according to the present invention includes a first lens and a second lens substantially in close contact with each other such that optical axes thereof match each other, and acts as a convex lens as a whole. Each lens includes a central portion including the optical axis and a peripheral portion located in a periphery of the central portion. The central portion of the first lens acts as a convex lens; and the central portion of the second lens acts as a concave lens. Where the refractive index of the first lens at d line (wavelength: 587.56 nm) is nd1, the Abbe constant of the first lens represented using the refractive indices at d line, F line (wavelength: 486.13 nm) and C line (wavelength: 656.27 nm) is νd1, the refractive index of the second lens at d line is nd2, and the Abbe constant of the second lens represented using the refractive indices at d line, F line and C line is νd2, the objective lens fulfills nd1>nd2 and νd1>νd2.
摘要翻译：提供能够补偿包括具有良好的波长色散补偿的高密度光盘，DVD和CD的多种类型的光盘的波长变化的各种像差的物镜，光头和光盘装置（驱动器）因此能够提供良好的记录或再现特性。根据本发明的物镜包括基本上彼此紧密接触的第一透镜和第二透镜，使得其光轴彼此匹配，并且作为整体起凸透镜的作用。每个透镜包括包括光轴的中心部分和位于中心部分的周边的周边部分。第一透镜的中心部分用作凸透镜; 并且第二透镜的中心部分用作凹透镜。在d线（波长：587.56nm）处的第一透镜的折射率为nd1的情况下，使用在d线，F线（波长：486.13nm）和C线（波长：48nm）处的折射率表示的第一透镜的阿贝常数 656.27nm）是d1，d线的第二透镜的折射率为nd2，使用d线，F线和C线的折射率表示的第二透镜的阿贝常数为d2，目标镜头满足nd1> nd2和＆ngr; d1>＆ngr; d2。

13. 发明申请

US20120163154A1 Optical Element and Optical Pickup Device Using the Same 有权
标题翻译：光学元件和使用它的光学拾取装置
公开(公告)号：US20120163154A1
公开(公告)日：2012-06-28
申请号：US13411636
申请日：2012-03-05
申请人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata
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。

14. 发明授权

US08184373B2 Optical element and method for producing the same 有权
标题翻译：光学元件及其制造方法
公开(公告)号：US08184373B2
公开(公告)日：2012-05-22
申请号：US11596283
申请日：2005-05-09
申请人： Yasuhiro Tanaka , Makoto Umetani , Hiroshi Yamaguchi , Motonobu Yoshikawa , Katsuhiko Hayashi
发明人： Yasuhiro Tanaka , Makoto Umetani , Hiroshi Yamaguchi , Motonobu Yoshikawa , Katsuhiko Hayashi
IPC分类号： G02B27/10
CPC分类号： G02B1/118 , G02B3/0018 , G02B3/0031 , G02B3/0056 , G02B5/1809 , G02F2201/38 , Y10T428/24405
摘要： The present invention relates to a structure comprising: a resin pattern (A)3 formed on a base material 1 and having structure units of a predetermined shape; and a resin pattern (B)5 formed on a surface of the resin pattern (A)3 and having microscopic structure units, of a predetermined shape, arranged at a period shorter than or equal to a wavelength range of a using light, and to a method for producing the structure, comprising the steps of: (i) forming a resin layer 2 on the base material 1 and subjecting the resin layer 2 to an exposure-development process so as to form the resin pattern (A)3; and (ii) subjecting a surface of the resin pattern (A)3 to an exposure-development process so as to form the resin pattern (B)5, wherein the steps (i) and (ii) are sequential.
摘要翻译：本发明涉及一种结构，包括：形成在基材1上并具有预定形状的结构单元的树脂图案（A）3; 以及树脂图案（B）5，其形成在树脂图案（A）3的表面上并且具有以比使用光的波长范围小的时间排列的预定形状的微观结构单元，并且一种制造该结构体的方法，包括以下步骤：（i）在基材1上形成树脂层2，对树脂层2进行曝光显影处理以形成树脂图案（A）3; 和（ii）对树脂图案（A）3的表面进行曝光显影处理以形成树脂图案（B）5，其中步骤（i）和（ii）是顺序的。

15. 发明申请

US20120075982A1 Objective Lens Element and Optical Pickup Device 有权
标题翻译：物镜和光学拾取装置
公开(公告)号：US20120075982A1
公开(公告)日：2012-03-29
申请号：US13248042
申请日：2011-09-29
申请人： Katsuhiko Hayashi , Yoshiaki Komma , Yasuhiro Tanaka , Michihiro Yamagata
发明人： Katsuhiko Hayashi , Yoshiaki Komma , Yasuhiro Tanaka , Michihiro Yamagata
IPC分类号： G02B27/42 , G11B7/135
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）。

16. 发明申请

US20120023514A1 COMPOUND OBJECTIVE LENS, OPTICAL HEAD DEVICE, OPTICAL INFORMATION DEVICE, AND INFORMATION PROCESSING DEVICE 有权
标题翻译：化合物目标透镜，光学头装置，光信息装置和信息处理装置
公开(公告)号：US20120023514A1
公开(公告)日：2012-01-26
申请号：US13257380
申请日：2011-01-07
申请人： Yoshiaki Komma , Katsuhiko Hayashi , Fumitomo Yamasaki , Michihiro Yamagata
发明人： Yoshiaki Komma , Katsuhiko Hayashi , Fumitomo Yamasaki , Michihiro Yamagata
IPC分类号： G02B27/42 , G11B17/028 , G11B7/13
CPC分类号： G11B7/13922 , G11B7/1353 , G11B7/1374 , G11B7/1376 , G11B7/13925 , G11B2007/0006 , G11B2007/13727
摘要： A compound objective lens, an optical head device, an optical information device, and an information processing device that can inhibit the occurrence of aberration even when a light beam source wavelength shifts from the designed value. A diffraction structure having a sawtooth or stepwise cross section is formed in the region (R10) and region (R20). The height of the sawtooth or stepwise cross section formed in the region (R10) provides a light beam, which has a predetermined wavelength, with a difference in optical path length of N times the predetermined wavelength, as compared with a case of propagation in air. The height of the sawtooth or stepwise cross section formed in the region (R20) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of J times the predetermined wavelength, as compared with a case of propagation in air. At least one of the difference in height between both ends of a boundary band (RB) provided between the region (R10) and the region (R20), and the width of the boundary band (RB) provides the light beam, which has the predetermined wavelength, with a difference in optical path length of (N+J)/2 times (N and J are mutually different natural numbers) the predetermined wavelength, as compared with a case of transmission in air.
摘要翻译：复光物镜，光头装置，光信息装置和信息处理装置，即使当光束源波长从设计值偏移时也能够抑制像差的发生。在区域（R10）和区域（R20）中形成具有锯齿状或阶梯状横截面的衍射结构。与在空气中传播的情况相比，在区域（R10）中形成的锯齿状或阶梯状横截面的高度提供具有预定波长的光束，其具有N倍于预定波长的光程长度差。与在空气中传播的情况相比，在区域（R20）中形成的锯齿或逐步横截面的高度提供了具有预定波长的光束，其光路长度差为J倍于预定波长。设置在区域（R10）和区域（R20）之间的边界带（RB）的两端之间的高度差异和边界带（RB）的宽度中的至少一个高度提供了具有与空气传播的情况相比，预定波长与（N + J）/ 2倍（N和J相互不同的自然数）的光程长度差异。

17. 发明授权

US07656769B2 Optical pickup and objective optical system for use in the same 失效
标题翻译：光拾取和物镜光学系统用于相同
公开(公告)号：US07656769B2
公开(公告)日：2010-02-02
申请号：US11631953
申请日：2006-02-17
申请人： Katsuhiko Hayashi , Akihiro Arai , Yasuhiro Tanaka , Michihiro Yamagata
发明人： Katsuhiko Hayashi , Akihiro Arai , Yasuhiro Tanaka , Michihiro Yamagata
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。

18. 发明申请

US20090185473A1 OBJECTIVE LENS AND OPTICAL PICKUP DEVICE 失效
标题翻译：目标镜头和光学拾取器件
公开(公告)号：US20090185473A1
公开(公告)日：2009-07-23
申请号：US12128255
申请日：2008-05-28
申请人： Takahiro TOMITA , Michihiro Yamagata , Yoshiaki Komma , Katsuhiko Hayashi
发明人： Takahiro TOMITA , Michihiro Yamagata , Yoshiaki Komma , Katsuhiko Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1374
摘要： In order that thickness reduction, weight reduction, and mass productivity improvement should be achieved in an objective lens even in the case where NA is high, an objective lens according to the present invention is a bi-convex single lens having at least one aspheric surface, and satisfies conditions: (1) 3.5
摘要翻译：为了即使在NA高的情况下也能够在物镜上实现厚度减小，重量减轻和质量生产率提高，根据本发明的物镜是具有至少一个非球面的双凸单透镜，满足条件：（1）3.5 = 0.85）。这里，DH-S是光信息记录介质侧的从前方主点H到焦点S的光轴上的距离; DH-H'是从前主点H到后主点H'的光轴上的距离; DH'-T2是从后方主点H'到光轴的交叉点T2的光轴与物镜的光学信息记录介质侧面的距离; DT1-H是从光轴的相交点T1和物镜的光源侧面到前方主点H的光轴的距离; d是光轴上的厚度; f是焦距。

19. 发明申请

US20080165420A1 AFOCAL LENS, OPTICAL HEAD, OPTICAL DISK APPARATUS AND OPTICAL INFORMATION EQUIPMENT 失效
标题翻译： AFOCAL镜头，光学头，光盘设备和光信息设备
公开(公告)号：US20080165420A1
公开(公告)日：2008-07-10
申请号：US11966109
申请日：2007-12-28
申请人： Fumitomo YAMASAKI , Yoshiaki Komma , Kanji Wakabayashi , Toshiyasu Tanaka , Katsuhiko Hayashi
发明人： Fumitomo YAMASAKI , Yoshiaki Komma , Kanji Wakabayashi , Toshiyasu Tanaka , Katsuhiko Hayashi
IPC分类号： G02B27/30 , G02B27/42
CPC分类号： G02B5/1895 , G11B7/1353 , G11B2007/0006
摘要： [Problem] The present invention provides an afocal lens for an optical head that can ensure WD while satisfying NA, the optical head, an optical disc apparatus, a computer, an optical disc player, and an optical disc recorder.[Solution] Using a blue-violet laser beam source with wavelength of about 400 nm, and in an optical head compatible to optical discs having different protective substrate thickness, an afocal lens 105 that expands a diameter of light flux of light from a collimating lens and emits the light as substantially parallel light to an objective lens is provided between the collimating lens 104 and the objective lens 106. The configuration makes it possible to ensure WD while satisfying NA.
摘要翻译：本发明提供一种能够确保WD同时满足NA的光头的无焦距透镜，光头，光盘装置，计算机，光盘播放器和光盘记录器。 [解决方案]使用具有约400nm波长的蓝紫色激光束源，并且在与具有不同保护衬底厚度的光盘相兼容的光学头中，放置来自准直透镜的光束的直径的无焦透镜105 并且在准直透镜104和物镜106之间设置大致平行的光到物镜的光。该配置使得可以在满足NA的情况下确保WD。

20. 发明申请

US20080049587A1 Complex optical element and optical pickup 有权
标题翻译：复杂的光学元件和光学拾取器
公开(公告)号：US20080049587A1
公开(公告)日：2008-02-28
申请号：US11889674
申请日：2007-08-15
申请人： Katsuhiko Hayashi , Jun Murata , Yasuhiro Tanaka , Michihiro Yamagata
发明人： Katsuhiko Hayashi , Jun Murata , Yasuhiro Tanaka , Michihiro Yamagata
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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