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61. 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。

62. 发明授权

US07433125B2 Light quantity distribution control element and optical apparatus using the same 有权
标题翻译：光量分配控制元件和使用其的光学装置
公开(公告)号：US07433125B2
公开(公告)日：2008-10-07
申请号：US11812414
申请日：2007-06-19
申请人： Motonobu Yoshikawa , Yoshiharu Yamamoto , Yasuhiro Tanaka , Michihiro Yamagata , Hiroshi Yamaguchi
发明人： Motonobu Yoshikawa , Yoshiharu Yamamoto , Yasuhiro Tanaka , Michihiro Yamagata , Hiroshi Yamaguchi
IPC分类号： G02B5/18
CPC分类号： G02B1/118 , G02B7/02 , Y10S359/90
摘要： A light quantity distribution control element includes a substrate of 20 mm×20 mm×3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure provided on a surface of the substrate. As the antireflective structure, a conical antireflective structure of a pitch of 0.15 μm (periodic structure having conical convexities) is formed. This corresponds to a antireflective structure having a pitch of a wavelength or less in the ultraviolet band (150 nm to 400 nm) at the time when ultraviolet light is used as incident light.
摘要翻译：光量分布控制元件包括由透光材料（例如光学玻璃或丙烯酸）制成的20mm×20mm×3mm的基板和设置在基板的表面上的抗反射结构。作为抗反射结构，形成0.15μm的间距的锥形抗反射结构（具有圆锥形凸起的周期性结构）。这对应于当使用紫外光作为入射光时，在紫外线带（150nm至400nm）中具有波长或更小的间距的抗反射结构。

63. 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。

64. 发明申请

US20070291619A1 Optical pickup and objective lens used therein 有权
标题翻译：其中使用的光学拾取和物镜
公开(公告)号：US20070291619A1
公开(公告)日：2007-12-20
申请号：US11808930
申请日：2007-06-13
申请人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Kazuhiko Ishimaru
发明人： Katsuhiko Hayashi , Yasuhiro Tanaka , Michihiro Yamagata , Kazuhiko Ishimaru
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。

65. 发明授权

US07256942B2 Single lens element, light source device and scanning optical device 有权
标题翻译：单镜头元件，光源装置和扫描光学装置
公开(公告)号：US07256942B2
公开(公告)日：2007-08-14
申请号：US10571294
申请日：2004-09-09
申请人： Michihiro Yamagata , Motonobu Yoshikawa , Yasuhiro Tanaka , Yoshiharu Yamamoto , Daizaburo Matsuki , Masaru Fujita , Toshihiko Shibita
发明人： Michihiro Yamagata , Motonobu Yoshikawa , Yasuhiro Tanaka , Yoshiharu Yamamoto , Daizaburo Matsuki , Masaru Fujita , Toshihiko Shibita
IPC分类号： G02B3/00 , G02B27/42
CPC分类号： G02B27/4227 , G02B26/10 , G02B27/0037 , G02B27/4272 , G02B27/4283
摘要： A single lens element used for converting a divergent pencil of rays, radiated from a light source, into a predetermined convergent state, wherein the single lens element is made from a resin and has a positive optical power due to a refraction effect and a positive optical power due to a diffraction effect, the diffraction effect is based on a diffraction structure formed on at least one of an incident side surface and an exit side surface of the single lens element, and the following expressions are satisfied: 0.1
摘要翻译：用于将从光源辐射的发散铅笔转换成预定的收敛状态的单个透镜元件，其中单个透镜元件由树脂制成并且由于折射效应而具有正的光学功率，并且具有正的光学由于衍射效应，衍射效应基于形成在单透镜元件的入射侧表面和出射侧表面中的至少一个上的衍射结构，并且满足以下表达式：公式description =“In-line Formulas”end =“lead”？> 0.1 <？in-line-formula description =“In-line Formulas”end =“lead”？> 0.4 <？in-line- 公式description =“In-line Formulas”end =“lead”？> 2.2 这里，f是整个单一透镜元件的焦距，fr是焦点由于单个透镜元件的折射效应导致的长度，T是单个透镜元件在光轴上的厚度，NA是入射侧的单个透镜元件的数值孔径。

66. 发明授权

US07248420B2 Optical pickup lens device and information recording and reproducing device using the same 有权
标题翻译：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
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： G02B13/18 , G02B3/02 , G02B3/08 , G11B7/00
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。

67. 发明申请

US20050093210A1 Method for producing optical element having antireflection structure, and optical element having antireflection structure produced by the method 审中-公开
标题翻译：具有防反射结构的光学元件的制造方法以及通过该方法制造的具有抗反射结构的光学元件
公开(公告)号：US20050093210A1
公开(公告)日：2005-05-05
申请号：US10975929
申请日：2004-10-29
申请人： Makoto Umetani , Yoshiyuki Shimizu , Yoshiharu Yamamoto , Michihiro Yamagata , Yasuhiro Tanaka , Hiroshi Yamaguchi
发明人： Makoto Umetani , Yoshiyuki Shimizu , Yoshiharu Yamamoto , Michihiro Yamagata , Yasuhiro Tanaka , Hiroshi Yamaguchi
IPC分类号： C03B11/08 , C03C15/00 , C03C17/06 , G02B5/00 , H05B6/00 , B29D24/00
CPC分类号： G02B5/003 , C03B11/082 , C03B11/086 , C03B2215/10 , C03B2215/17 , C03B2215/412 , C03C15/00 , C03C17/06 , Y02P40/57
摘要： A cylinder-shaped Cr mask having a diameter of 0.15 μm is formed at a pitch of 0.15 μm on a quartz glass substrate. The quartz glass substrate on which the cylinder-shaped Cr mask is formed is placed in a RF dry-etching apparatus and the surface of the quartz glass substrate is etched with CHF3+O2 gas. Thus, a cone-shaped antireflection structure with a pitch of 0.15 μm and a height of 0.15 μm is formed on the surface of the quartz glass substrate. An Ir—Rh alloy film having a thickness of 0.05 μm for protecting the surface is formed on the surface (pressing surface) of the quartz glass substrate provided with the cone-shaped antireflection structure to form a mold having an antireflection structure. An optical material 11 (crown based borosilicate glass) to which a releasing agent containing carbon (C) particulates for mold release is applied is press-molded with the mold having an antireflection structure, and the press-molded optical material is released from the mold having an antireflection structure without cooling. After the press-molded optical material is cooled, the releasing agent is removed.
摘要翻译：在石英玻璃基板上以0.15μm的间距形成直径为0.15μm的圆筒状Cr掩模。将形成有圆筒形Cr掩模的石英玻璃基板放置在RF干蚀刻装置中，并用CHF 3 + O 2 2蚀刻石英玻璃基板的表面， / SUB气体。因此，在石英玻璃基板的表面上形成具有0.15μm的间距和0.15μm的高度的锥形防反射结构。在设置有锥形防反射结构的石英玻璃基板的表面（按压面）上形成厚度为0.05μm的用于保护表面的Ir-Rh合金膜，以形成具有防反射结构的模具。将具有用于脱模的碳（C）颗粒的脱模剂施加到其上的光学材料11（冠状硼硅酸盐玻璃）用具有抗反射结构的模具进行压模，并且将模压的光学材料从模具中释放具有防反射结构而不冷却。压制成型的光学材料冷却后，除去脱模剂。

68. 发明授权

US06590717B2 Optical system for optical disk, optical head unit for optical disk, and optical drive device 失效
标题翻译：用于光盘的光学系统，用于光盘的光头单元和光驱装置
公开(公告)号：US06590717B2
公开(公告)日：2003-07-08
申请号：US10129234
申请日：2002-05-02
申请人： Tomohiko Sasano , Yasuhiro Tanaka , Michihiro Yamagata
发明人： Tomohiko Sasano , Yasuhiro Tanaka , Michihiro Yamagata
IPC分类号： G02B1318
CPC分类号： G11B7/13927 , G11B7/1374 , G11B7/13922
摘要： An optical system for an optical disk, comprising a light source (61), a collimating optical system (63) for converting a luminous flux from the light source into parallel rays of light, and an object lens (66) for condensing the parallel rays onto the information recording surface (71) of an optical disk. The object lens consisting of two or three lenses and having a numerical aperture (NA) of at least 0.82 enables a high-density recording. Since a third-order astigmatism produced when the object lens is tilted 0.7 degree with respect to an optical axis is as small as up to 10 m lambda, a residual aberration, after a third-order comatic aberration produced when the optical disk is tilted due to warping or the like is corrected by tilting the optical lens, can be reduced. Therefore, a tilted optical disk still can ensure a satisfactory recording and/or reproducing quality.
摘要翻译：一种用于光盘的光学系统，包括光源（61），用于将来自光源的光通量转换为平行光线的准直光学系统（63）和用于将平行光线到光盘的信息记录表面（71）上。由两个或三个透镜组成的具有至少0.82的数值孔径（NA）的物镜能够进行高密度记录。由于当物镜相对于光轴倾斜0.7度时产生的三阶像散小至高达10mλ，所以当光盘倾斜时产生三阶彗差之后的残余像差可以通过使光学透镜倾斜来矫正翘曲等。因此，倾斜的光盘仍然可以确保令人满意的记录和/或再现质量。

69. 发明授权

US06349000B1 Device for calculating diffraction efficiencies of a diffraction lens, lens with grating element, and optical system for reading 有权
$Device for calculating diffraction efficiencies of a diffraction lens, lens with grating element, and optical system for reading$
标题翻译：用于计算衍射透镜，具有光栅元件的透镜和用于读取的光学系统的衍射效率的装置
公开(公告)号：US06349000B1
公开(公告)日：2002-02-19
申请号：US09154355
申请日：1998-09-16
申请人： Michihiro Yamagata , Kazutake Boku , Yasuhiro Tanaka , Tomohiko Sasano , Shusuke Ono
发明人： Michihiro Yamagata , Kazutake Boku , Yasuhiro Tanaka , Tomohiko Sasano , Shusuke Ono
IPC分类号： G02B518
CPC分类号： G02B5/1895 , G02B5/1876
摘要： A device for calculating diffraction efficiencies of a diffraction lens divided into a plurality of regions, each region comprising at least one grating ring, comprises a first memory for storing information about diffraction efficiencies of the regions; a second memory for storing information about weights corresponding to the regions; and a first processor for retrieving information from the first and the second memory, and calculating diffraction efficiencies of the entire diffraction lens using the formula E j = ∑ m = 1 M ⁢ W m ⁢ η mj ( 1 ) wherein: j: integer indicating the order of diffraction light Ej: diffraction efficiency for j-th order diffraction light of the diffraction lens M: positive integer (M>1) indicating the number of regions for which the diffraction efficiency is calculated m: index of the region for which the diffraction efficiency is calculated &eegr;mj: diffraction efficiency for the j-th order diffraction light of the m-th region (stored in the first memory) Wm: weight for the m-th region (stored in the second memory means). Thus, the diffraction efficiency of the diffraction lens can be calculated easily.
摘要翻译：一种用于计算分成多个区域的衍射透镜的衍射效率的装置，每个区域包括至少一个光栅环，包括用于存储关于所述区域的衍射效率的信息的第一存储器; 第二存储器，用于存储与所述区域对应的权重的信息; 以及第一处理器，用于从第一和第二存储器检索信息，并且使用公式计算衍射透镜的衍射效率：j：表示衍射光的次数的整数Ej：衍射的第j级衍射光的衍射效率透镜M：表示计算衍射效率的区域数的正整数（M> 1）m：衍射效率计算区域的折射率jj第m区的第j级衍射光的衍射效率（存储在第一存储器中）Wm：第m区域的重量（存储在第二存储装置中）。因此，可以容易地计算衍射透镜的衍射效率。

70. 发明授权

US5473471A Complex lens with diffraction grating 失效
$Complex lens with diffraction grating$
标题翻译：复合透镜与衍射光栅
公开(公告)号：US5473471A
公开(公告)日：1995-12-05
申请号：US111896
申请日：1993-08-26
申请人： Michihiro Yamagata , Yasuhiro Tanaka
发明人： Michihiro Yamagata , Yasuhiro Tanaka
IPC分类号： G02B5/18 , G02B27/10 , G11B7/09 , G11B7/135 , G02B3/08
CPC分类号： G02B5/1895 , G02B27/1006 , G02B27/1086 , G02B27/14 , G02B27/141 , G02B5/1876 , G11B7/0903 , G11B7/1353 , G11B7/1372
摘要： A complex lens of one-piece construction has first and second lens surfaces opposite to each other. At least one of the first and second lens surfaces of the complex lens is integrally formed with a diffraction grating. This diffraction grating has a multiplicity of substantially parallel grating grooves each being of a generally triangular, sinusoidal or trapezoidal cross-section. An optical head utilizing the complex lens is also disclosed.
摘要翻译：一体式构造的复合透镜具有彼此相对的第一和第二透镜表面。复合透镜的第一和第二透镜表面中的至少一个与衍射光栅一体地形成。该衍射光栅具有多个基本平行的光栅槽，每个栅格槽具有大致三角形，正弦曲线或梯形截面。还公开了一种利用复合透镜的光学头。

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