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81. 发明授权

US07046350B2 Device for calculating diffraction efficiencies of a diffraction lens, lens with grating element, and optical system for reading 失效
$Device for calculating diffraction efficiencies of a diffraction lens, lens with grating element, and optical system for reading$
公开(公告)号：US07046350B2
公开(公告)日：2006-05-16
申请号：US10037866
申请日：2001-10-24
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： G01B9/00 , G02B5/18
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 ηmj: 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.

82. 发明申请

US20050161584A1 Solid-state imaging device and camera 有权
标题翻译：固态成像装置和相机
公开(公告)号：US20050161584A1
公开(公告)日：2005-07-28
申请号：US10916590
申请日：2004-08-12
申请人： Syouji Tanaka , Ryohei Miyagawa , Toshiya Fujii , Yasuhiro Tanaka , Michihiro Yamagata , Hiroaki Okayama
发明人： Syouji Tanaka , Ryohei Miyagawa , Toshiya Fujii , Yasuhiro Tanaka , Michihiro Yamagata , Hiroaki Okayama
IPC分类号： G02B3/00 , H01L27/14 , H01L27/146 , H01L31/0232 , H01L31/10 , H04N5/335 , H04N5/361 , H04N5/369 , H04N5/372 , H04N5/374 , H01L27/00 , G11B7/135
CPC分类号： H01L27/14601 , H01L27/14603 , H01L27/14605 , H01L27/14625 , H01L27/14627 , H01L27/14685
摘要： A solid-state imaging device includes pixels 2 arranged two-dimensionally on a semiconductor substrate 1. In a predetermined area in each pixel is formed a light-sensitive area 3 for receiving incident light 11, and each pixel includes a photoelectric conversion portion 4 for converting the incident light into a signal charge. In at least some of the pixels, the center of the light-sensitive area is offset from the center of the pixel when seen from directly above a principal surface of the semiconductor substrate. Each pixel further includes a light-path change member 12a and 12b for deflecting incident light traveling toward the center of the pixel so as to be directed toward the center of the light-sensitive area. Thus, a solid-state imaging device simultaneously realizing the miniaturization of pixels and a high image quality is provided.
摘要翻译：固体摄像器件包括二维布置在半导体衬底1上的像素2。在每个像素中的预定区域中形成有用于接收入射光11的感光区域3，并且每个像素包括用于将入射光转换成信号电荷的光电转换部分4。在至少一些像素中，当从半导体衬底的主表面的正上方观察时，感光区域的中心偏离像素的中心。每个像素还包括光路改变构件12a和12b，用于偏转朝向像素的中心行进的入射光，以便朝向感光区域的中心。因此，提供了同时实现像素的小型化和高图像质量的固态成像装置。

83. 发明申请

US20050122597A1 Optical head device and optical information recording and reproducing device 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：US20050122597A1
公开(公告)日：2005-06-09
申请号：US10486003
申请日：2002-08-07
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： G02B13/00 , G02B13/08 , G11B7/00 , G11B7/135 , G11B7/1372 , G02B9/00
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。

84. 发明申请

US20050111336A1 Objective lens element for optical disks and optical head device incorporating the same 审中-公开
标题翻译：用于光盘的物镜元件和包含该物镜的光学头装置
公开(公告)号：US20050111336A1
公开(公告)日：2005-05-26
申请号：US10985906
申请日：2004-11-12
申请人： Yasuhiro Tanaka , Michihiro Yamagata , Akifumi Hashimoto , Yuichi Takahashi , Yukihiro Chokyu , Kei Ikeda
发明人： Yasuhiro Tanaka , Michihiro Yamagata , Akifumi Hashimoto , Yuichi Takahashi , Yukihiro Chokyu , Kei Ikeda
IPC分类号： G02B13/00 , G02B5/18 , G02B13/18 , G11B7/00 , G11B7/135 , G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/139 , G11B7/1392
CPC分类号： G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： An objective lens records information on, or read information from, a first optical medium by utilizing a first light beam which convergences on the first optical medium at a first numerical aperture (hereinafter “NA1”). The objective lens records information on, or read information from, a second optical medium by utilizing a second light beam which convergences on the second optical medium at a second numerical aperture (hereinafter “NA2”). In the objective lens, NA1 is greater than NA2. The objective lens has an optical lens for receiving the first light beam and the second light beam. The optical lens has a peripheral diffraction structure disposed substantially outside an area of incidence of the second light beam for suppressing fluctuation in wavefront aberration of the first light beam, and a phase step structure disposed in a central region relative to the peripheral region for producing a phase difference in the second light beam.
摘要翻译：物镜通过利用以第一数值孔径收敛在第一光学介质上的第一光束（以下称为“NA1”）来记录关于第一光学介质的信息或从第一光学介质读取信息。物镜通过利用以第二数值孔径（以下称为“NA2”）会聚在第二光学介质上的第二光束来记录关于第二光学介质的信息或从第二光学介质读取信息。在物镜中，NA1大于NA2。物镜具有用于接收第一光束和第二光束的光学透镜。光学透镜具有基本上设置在第二光束的入射面的外侧的外围衍射结构，用于抑制第一光束的波面像差的波动，以及相位步长结构，其设置在相对于周边区域的中心区域中，第二光束的相位差。

85. 发明授权

US06829209B1 OBJECTIVE FOR OPTICAL DISK, OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS BOTH COMPRISING THE SAME, MOLD FOR FORMING LENS, METHOD FOR MACHINING MOLD FOR FORMING LENS, AND SHAPE MEASURING INSTRUMENT 失效
标题翻译：用于光盘，光头设备和光信息记录/复印设备包括它们的模具，用于形成镜片的模具，用于形成镜片的模具加工方法和形状测量仪器
公开(公告)号：US06829209B1
公开(公告)日：2004-12-07
申请号：US09763385
申请日：2001-02-21
申请人： Yasuhiro Tanaka , Michihiro Yamagata , Tomohiko Sasano
发明人： Yasuhiro Tanaka , Michihiro Yamagata , Tomohiko Sasano
IPC分类号： G11B700
CPC分类号： C03B11/084 , B24B19/20 , C03B11/08 , C03B11/082 , C03B2215/07 , C03B2215/41 , C03B2215/49 , C03B2215/72 , G11B7/1374 , G11B7/13922 , G11B2007/0006
摘要： An objective lens for an optical disk including one lens and capable of satisfying an excellent focusing property on any of two kinds of optical disks each having a different thickness. The objective lens (2) is formed of a single lens having aspheric surfaces on both sides with the surface (3) at the side of the light source a rotationally symmetric aspheric surface. Furthermore, the surface at the side of the optical disk (6) of the objective lens (2) is divided into an inner circumference region (4) and an outer circumference region (5) and a surface (7) forming the difference in level of about 0.3 &mgr;m that is provided in parallel to the optical axis (in the direction of the optical axis) at the boundary between the inner circumference region (4) and the outer circumference region (5). The spherical aberration is corrected by the inner circumference region (4) and outer circumference (5) of the objective lens (2) corresponding to the optical disks having a different thickness.
摘要翻译：一种用于包括一个透镜的光盘的物镜，并且能够在各自具有不同厚度的两种光盘中的任何一种上满足优异的聚焦特性。物镜（2）由具有在两侧具有非球面的单个透镜形成，光源侧的表面（3）是旋转对称的非球面。此外，物镜（2）的光盘（6）侧的表面被分成内周区域（4）和外周区域（5）和形成水平差的表面（7）在内周区域（4）和外周区域（5）之间的边界处平行于光轴（沿光轴方向）设置约0.3μm。通过与具有不同厚度的光盘对应的物镜（2）的内周区域（4）和外周（5）校正球面像差。

86. 发明授权

US06490100B1 Objective lens and optical head device 有权
标题翻译：物镜和光头设备
公开(公告)号：US06490100B1
公开(公告)日：2002-12-03
申请号：US09806212
申请日：2001-03-27
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： G11B7/0956 , G02B27/0068 , G11B7/0933 , G11B7/0935 , G11B7/1374 , G11B7/13925 , G11B7/13927 , G11B7/22
摘要： An objective lens (1) for an optical disk, which focuses a light beam from a light source, is designed so that a third-order coma aberration generated when the objective lens is inclined at a unit angle is larger than a third-order coma aberration generated when the optical disk (2) is inclined at the unit angle, mounted on an actuator for inclining the objective lens according to an inclination amount of the optical disk, and used. With this structure, it is possible to obtain an objective lens for an optical disk that has a large numerical aperture and is easy to manufacture and assemble, and in which the third-order coma aberration generated when the optical disk surface is inclined owing to a warp or the like can be corrected by small inclination of the objective lens, so as to reduce a residual astigmatism, which is generated according to the inclination amount, after the correction.
摘要翻译：设计了用于聚焦来自光源的光束的用于光盘的物镜（1），使得当物镜以单位角度倾斜时产生的三阶彗差大于三阶彗差并且使用在光盘（2）以单位角倾斜时产生的像差，安装在用于使物镜倾斜的致动器上。利用这种结构，可以获得具有大数值孔径并且易于制造和组装的光盘用物镜，并且其中当光盘表面由于光盘表面倾斜而产生的三次彗差翘曲等可以通过物镜的小倾斜来校正，以便在校正之后减少根据倾斜量产生的残余像散。

87. 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。

88. 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。

89. 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。

90. 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。

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