公开(公告)号：US08611199B2

公开(公告)日：2013-12-17

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： 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）; DO12（DO22）是由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）。

公开(公告)号：US20120163156A1

公开(公告)日：2012-06-28

申请号：US13411653

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： G11B7/00

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。

公开(公告)号：US08179768B2

公开(公告)日：2012-05-15

申请号：US12679041

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 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 。

公开(公告)号：US20120075978A1

公开(公告)日：2012-03-29

申请号：US13248038

申请日：2011-09-29

申请人： Katsuhiko Hayashi ,  Yasuhiro Tanaka ,  Michihiro Yamagata ,  Fumitomo Yamasaki

发明人： Katsuhiko Hayashi ,  Yasuhiro Tanaka ,  Michihiro Yamagata ,  Fumitomo Yamasaki

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。

公开(公告)号：US07880794B2

公开(公告)日：2011-02-01

申请号：US11886970

申请日：2006-03-20

申请人： Michihiro Yamagata ,  Hiroaki Okayama ,  Kazutake Boku ,  Yasuhiro Tanaka ,  Kenichi Hayashi ,  Yoshimasa Fushimi ,  Shigeki Murata ,  Takayuki Hayashi

发明人： Michihiro Yamagata ,  Hiroaki Okayama ,  Kazutake Boku ,  Yasuhiro Tanaka ,  Kenichi Hayashi ,  Yoshimasa Fushimi ,  Shigeki Murata ,  Takayuki Hayashi

IPC分类号： G02B13/16

CPC分类号： H04N5/2254 ,  G02B3/0031 ,  G02B3/0043 ,  G02B3/005 ,  G02B3/0056 ,  G02B3/0075 ,  G02B27/1066 ,  G02B27/123 ,  H01L27/14627

摘要： An object of the present invention is to provide: a thin imaging device in which a high image resolution is obtained and in which the resolution does not uniformly vary even when the shooting distance is changed; and a lens array used therein. The present invention relates to an imaging device comprising: a lens array 130 constructed by arranging in parallel a plurality of lens elements having optical power in at least one surface; and an image sensor 110 in which an optical image formed by an optical system having each of the lens elements is received by each of mutually different imaging regions each having a plurality of photoelectric conversion sections so that the optical image is converted into an electric image signal, wherein each lens element and the imaging region corresponding to the lens element constitute an imaging unit, while the imaging units have diverse imaging region areas. The present invention relates also to a lens array used therein.

摘要翻译： 本发明的一个目的是提供：一种薄的成像装置，其中获得高的图像分辨率，即使当拍摄距离改变时分辨率也不均匀地变化; 和其中使用的透镜阵列。 本发明涉及一种成像装置，包括：透镜阵列130，其通过平行布置具有至少一个表面中的光焦度的多个透镜元件; 以及图像传感器110，其中由具有每个透镜元件的光学系统形成的光学图像由相互不同的每个具有多个光电转换部的成像区域接收，使得光学图像被转换为​​电图像信号 其中，每个透镜元件和对应于透镜元件的成像区域构成成像单元，而成像单元具有不同的成像区域区域。 本发明还涉及其中使用的透镜阵列。

公开(公告)号：US20100254248A1

公开(公告)日：2010-10-07

申请号：US12679041

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： G11B7/135

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 。

公开(公告)号：US07239448B2

公开(公告)日：2007-07-03

申请号：US10973616

申请日：2004-10-27

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.

公开(公告)号：US20070097523A1

公开(公告)日：2007-05-03

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： G02B9/00

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，并且NA是入射侧的单个透镜元件的数值孔径。

公开(公告)号：US20070091197A1

公开(公告)日：2007-04-26

申请号：US10578226

申请日：2004-11-04

申请人： Hiroaki Okayama ,  Michihiro Yamagata ,  Kazutake Boku ,  Yasuhiro Tanaka ,  Kenichi Hayashi ,  Yoshima Fushimi ,  Shigeki Murata ,  Takayuki Hayashi

发明人： Hiroaki Okayama ,  Michihiro Yamagata ,  Kazutake Boku ,  Yasuhiro Tanaka ,  Kenichi Hayashi ,  Yoshima Fushimi ,  Shigeki Murata ,  Takayuki Hayashi

IPC分类号： H04N5/225

CPC分类号： G02B3/0056 ,  G02B27/0018 ,  H04N5/2254

摘要： There is provided an imaging device which is small in light loss, is operable to suppress an occurrence of a stray light, and is operable to provide an image with a high quality as far as a periphery thereof. The imaging device operable to output an image of an object as an electrical image signal, comprising: a solid-state imaging sensor including pixels which are two dimensionally arranged on a first flat surface and each of which has a photo-electric conversion function; and a lens array including micro lenses two dimensionally arranged on a second flat surface separately provided so as to be parallel to the first flat surface, in which the solid-state imaging sensor includes an imaging area of unit including a plurality of pixels, and each of the micro lenses forms an optical image of the object on a corresponding imaging area of unit and satisfies a predetermined condition, arctan(L/f)≦θ, for a pixel, from among pixels included in an imaging area of unit corresponding to each micro lens, positioned farthest from an optical axis of a corresponding micro lens. Here, θ is a maximum angle of an incident light capable of entering a pixel, f is a focal length of a micro lens, and L is a diameter of a circle circumscribing an imaging area of unit corresponding to one of the micro lenses.

摘要翻译： 提供了一种光损失小的成像装置，可操作地抑制杂散光的发生，并且可操作以提供具有高质量的图像至其周边。 该成像装置可操作以输出物体的图像作为电图像信号，包括：固态成像传感器，其包括二维排列在第一平面上并具有光电转换功能的像素; 以及透镜阵列，其包括二维布置在分别设置成平行于所述第一平坦表面的第二平坦表面上的微透镜，其中所述固态成像传感器包括包括多个像素的单元的成像区域，并且每个 的微透镜在单元的对应成像区域上形成物体的光学图像，并且满足预定条件，对于像素，从包括在对应于单元的单元的成像区域中的像素中的像素的arctan（L / f）<= 每个微透镜被定位成最远离相应微透镜的光轴。 这里，θ是能够进入像素的入射光的最大角度，f是微透镜的焦距，L是围绕与微透镜之一对应的单位的成像区域的圆的直径。

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。