公开(公告)号：US08154801B2

公开(公告)日：2012-04-10

申请号：US12801615

申请日：2010-06-17

申请人： Mitsuhiro Suzaki ,  Shinichi Arita ,  Takuya Anzawa

发明人： Mitsuhiro Suzaki ,  Shinichi Arita ,  Takuya Anzawa

IPC分类号： G02B27/64 ,  G02B15/14

CPC分类号： G02B15/173 ,  G02B7/028

摘要： A zoom lens includes, in order from an object side to an image side: a first lens group that has a positive refractive power and remains stationary in a direction of an optical axis; a second lens group that has a negative refractive power and is movable on the optical axis so as to perform a zoom operation; a third lens group that has a positive refractive power and remains stationary in the direction of the optical axis during zooming and focusing; a fourth lens group that has a positive refractive power and is movable on the optical axis so as to correct fluctuation in imaging position and correct change in imaging position caused by change in object distance; and a fifth lens group that has a positive refractive power and remains stationary in the direction of the optical axis.

摘要翻译： 变焦透镜从物体侧到像侧依次包括：具有正折光力并在光轴方向保持静止的第一透镜组; 第二透镜组，其具有负屈光力并且可在光轴上移动以执行变焦操作; 具有正屈光力并在变焦和聚焦期间在光轴方向上保持静止的第三透镜组; 第四透镜组，其具有正的折光力并且可以在光轴上移动，以便校正成像位置的波动，以及由于物距的变化引起的校正的成像位置的变化; 以及具有正屈光力并在光轴方向上保持静止的第五透镜组。

公开(公告)号：US20110007396A1

公开(公告)日：2011-01-13

申请号：US12801615

申请日：2010-06-17

申请人： Mitsuhiro Suzaki ,  Shinichi Arita ,  Takuya Anzawa

发明人： Mitsuhiro Suzaki ,  Shinichi Arita ,  Takuya Anzawa

IPC分类号： G02B27/64 ,  G02B15/14

CPC分类号： G02B15/173 ,  G02B7/028

摘要： A zoom lens includes, in order from an object side to an image side: a first lens group that has a positive refractive power and remains stationary in a direction of an optical axis; a second lens group that has a negative refractive power and is movable on the optical axis so as to perform a zoom operation; a third lens group that has a positive refractive power and remains stationary in the direction of the optical axis during zooming and focusing; a fourth lens group that has a positive refractive power and is movable on the optical axis so as to correct fluctuation in imaging position and correct change in imaging position caused by change in object distance; and a fifth lens group that has a positive refractive power and remains stationary in the direction of the optical axis.

摘要翻译： 变焦透镜从物体侧到像侧依次包括：具有正折光力并在光轴方向保持静止的第一透镜组; 第二透镜组，其具有负屈光力并且可在光轴上移动以执行变焦操作; 具有正屈光力并在变焦和聚焦期间在光轴方向上保持静止的第三透镜组; 第四透镜组，其具有正的折光力并且可以在光轴上移动，以便校正成像位置的波动，以及由于物距的变化引起的校正的成像位置的变化; 以及具有正屈光力并在光轴方向上保持静止的第五透镜组。

公开(公告)号：US08441557B2

公开(公告)日：2013-05-14

申请号：US13317021

申请日：2011-10-07

申请人： Takuya Anzawa ,  Shinichi Arita

发明人： Takuya Anzawa ,  Shinichi Arita

IPC分类号： H04N5/262 ,  G02B15/14

CPC分类号： G02B15/173 ,  G02B13/18

摘要： A zoom lens includes a first lens group with positive refracting power and normally located at a fixed position, a second lens group with negative refracting power and movable in an optical axis direction for zooming, a third lens group with positive refracting power and normally located at a fixed position, a fourth lens group with positive refracting power and movable in the optical axis direction for correction of a focal position for zooming and focusing, and a fifth lens group. These lens groups are arranged in order from an object side to an image side. The zoom lens satisfies the conditional equations (1) 1.00

摘要翻译： 变焦透镜包括具有正折射率并且通常位于固定位置的第一透镜组，具有负折射光焦度并可沿光轴方向移动的第二透镜组用于变焦，具有正折射率的第三透镜组，并且通常位于 固定位置，具有正折射力并且可沿光轴方向移动的第四透镜组，用于校正用于变焦和聚焦的焦点位置，以及第五透镜组。 这些透镜组从物体侧到像侧依次排列。 变焦透镜满足条件式（1）1.00

公开(公告)号：US20120147253A1

公开(公告)日：2012-06-14

申请号：US13317021

申请日：2011-10-07

申请人： Takuya Anzawa ,  Shinichi Arita

发明人： Takuya Anzawa ,  Shinichi Arita

IPC分类号： H04N5/232 ,  G02B15/163

CPC分类号： G02B15/173 ,  G02B13/18

摘要： A zoom lens includes a first lens group with positive refracting power and normally located at a fixed position, a second lens group with negative refracting power and movable in an optical axis direction for zooming, a third lens group with positive refracting power and normally located at a fixed position, a fourth lens group with positive refracting power and movable in the optical axis direction for correction of a focal position for zooming and focusing, and a fifth lens group. These lens groups are arranged in order from an object side to an image side. The zoom lens satisfies the conditional equations (1) 1.00

摘要翻译： 变焦透镜包括具有正折射率并且通常位于固定位置的第一透镜组，具有负折射光焦度并可沿光轴方向移动的第二透镜组用于变焦，具有正折射率的第三透镜组，并且通常位于 固定位置，具有正折射力并且可沿光轴方向移动的第四透镜组，用于校正用于变焦和聚焦的焦点位置，以及第五透镜组。 这些透镜组从物体侧到像侧依次排列。 变焦透镜满足条件式（1）1.00

公开(公告)号：US20050201671A1

公开(公告)日：2005-09-15

申请号：US11122170

申请日：2005-05-04

申请人： Taro Kaneko ,  Takuya Anzawa

发明人： Taro Kaneko ,  Takuya Anzawa

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02B6/13 ,  G02B6/42 ,  G02B6/26

CPC分类号： G02B6/12004 ,  G02B6/122 ,  G02B6/42 ,  G02B6/4214 ,  G02B6/4224 ,  G02B2006/12126

摘要： An optical waveguide device according to the invention is provided with a substrate (271), a metal layer (272) arranged on the substrate (271), a plurality of claddings (262) arranged on the metal layer (207) via grooves (205), cores (202) arranged in the claddings (262) for transmitting lights, optical waveguides (201) having optically non-transmissive material (291) coating the insides of the grooves (205) and optically non-transmissive and electrically insulating material (273) coating the top faces of the claddings (262), and light receiving elements (203) for receiving lights emitted from the end faces of the cores (202). In an optical waveguide device according to the invention, dents (204) in which the end faces of the cores are exposed (202) may be formed, the inside faces of the dents (204) being coated with optically non-transmissive material except where the end faces of the cores are exposed. Also, in an optical waveguide device according to the invention, the cores (202) and the light receiving elements (203) may be paired and provided in a plurality each, and the light receiving elements (203) may be divided into odd-number and even-number groups, which are arranged with some spacing between them, the odd-number and even-number groups being blocked from each other by optically non-transmissive material (301).

公开(公告)号：US20070045509A1

公开(公告)日：2007-03-01

申请号：US11466220

申请日：2006-08-22

申请人： Takuya Anzawa

发明人： Takuya Anzawa

IPC分类号： G02B27/40

CPC分类号： G02B27/40 ,  G02B27/144 ,  G02B27/283 ,  G11B7/0901 ,  G11B7/0912 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/0945 ,  G11B7/131

摘要： An optical pickup for recording or reproducing information to an optical disk, includes: a first photodetector for detecting a return light from the optical disk, wherein the first photodetector is configured so that the first photodetector is divided into three portions in a radial direction corresponding to a radial direction of the optical disk and light receiving elements at both end portions in the radial direction are divided into three portions in substantially a track direction perpendicular to the radial direction, so that the first photodetector includes a light receiving element at a central portion in the radial direction and the three light receiving portions at each of both the end portions to be seven in total to output a light receiving element signal based on light reception of the return light as a track error signal generation signal.

摘要翻译： 一种用于向光盘记录或再现信息的光学拾取器，包括：用于检测来自光盘的返回光的第一光电检测器，其中第一光电检测器被配置为使得第一光电检测器被分成三个对应于 光盘的半径方向和半径方向的两端部的受光元件在与径向垂直的大致轨道方向上被分割成三部分，使得第一光检测器在中央部分包括光接收元件 两个端部中的每一个的径向方向和三个光接收部分总共为7个，以基于返回光的光接收输出光接收元件信号作为轨道误差信号产生信号。

公开(公告)号：US20060083120A1

公开(公告)日：2006-04-20

申请号：US11253883

申请日：2005-10-19

申请人： Takuya Anzawa

发明人： Takuya Anzawa

IPC分类号： G11B21/10

CPC分类号： G11B7/133 ,  G11B7/0903 ,  G11B7/131

摘要： An optical pickup includes a light source, an objective lens, light detectors, an optical system, and an error-signal generator. The light-receiving surface of at least one of the light detectors has a width extending in a first direction corresponding to a radial direction of an optical disk, and is formed by first to sixth photoreceptors arrayed along the first direction. The first and second photoreceptors, the third and fourth photoreceptors, and the fifth and sixth photoreceptors are disposed axisymmetrically with respect to a center line extending perpendicularly to the first direction. The error-signal generator generates a focus-error signal using a sum signal of detection signals output from the first and second photoreceptors or a sum signal of detection signals output from the first to fourth photoreceptors in a light spot size method, and generates a tracking-error signal using the other sum signal in a differential compensate push-pull method.

公开(公告)号：US20060039253A1

公开(公告)日：2006-02-23

申请号：US11204341

申请日：2005-08-16

申请人： Takeshi Kubo ,  Takuya Anzawa

发明人： Takeshi Kubo ,  Takuya Anzawa

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/00 ,  G11B7/0903 ,  G11B7/0912 ,  G11B7/094

摘要： Disclosed herein is an optical disc apparatus for applying a light beam to a surface of an optical disc and detecting a return light beam from the surface of the optical disc. The apparatus includes a light detector for detecting the return light beam having: a light detector having: a first divided area and a second divided area which are divided from each other at the center of the return light beam in a direction perpendicular to a track on the surface of the optical disc; and a third divided area and a fourth divided area which are positioned respectively outwardly of the first divided area and the second divided area in the direction perpendicular to the track. The first and second divided areas are positioned so as not to overlap an area where zeroth-order light and first-order light contained in the return light beam overlap each other.

摘要翻译： 本文公开了一种用于将光束施加到光盘表面并检测来自光盘表面的返回光束的光盘装置。 该装置包括用于检测返回光束的光检测器，具有：光检测器，具有：第一分割区域和第二分割区域，其在垂直于轨道的方向上在返回光束的中心处彼此分开 光盘的表面; 以及在垂直于轨道的方向上分别位于第一分割区域和第二分割区域的外侧的第三分割区域和第四分割区域。 第一分割区域和第二分割区域被定位成不与包含在返回光束中的第零级光和一级光重叠的区域重叠。

公开(公告)号：US07580332B2

公开(公告)日：2009-08-25

申请号：US11253883

申请日：2005-10-19

申请人： Takuya Anzawa

发明人： Takuya Anzawa

IPC分类号： G11B7/00

CPC分类号： G11B7/133 ,  G11B7/0903 ,  G11B7/131

摘要： An optical pickup includes a light source, an objective lens, light detectors, an optical system, and an error-signal generator. The light-receiving surface of at least one of the light detectors has a width extending in a first direction corresponding to a radial direction of an optical disk, and is formed by first to sixth photoreceptors arrayed along the first direction. The first and second photoreceptors, the third and fourth photoreceptors, and the fifth and sixth photoreceptors are disposed axisymmetrically with respect to a center line extending perpendicularly to the first direction. The error-signal generator generates a focus-error signal using a sum signal of detection signals output from the first and second photoreceptors or a sum signal of detection signals output from the first to fourth photoreceptors in a light spot size method, and generates a tracking-error signal using the other sum signal in a differential compensate push-pull method.

摘要翻译： 光拾取器包括光源，物镜，光检测器，光学系统和误差信号发生器。 至少一个光检测器的光接收表面具有在与光盘的径向对应的第一方向上延伸的宽度，并且由沿着第一方向排列的第一至第六感光体形成。 第一和第二感光体，第三和第四感光体以及第五和第六感光体相对于垂直于第一方向延伸的中心线轴对称设置。 误差信号发生器使用从第一和第二感光体输出的检测信号的和信号或以光斑尺寸方法从第一至第四感光体输出的检测信号的和信号产生聚焦误差信号，并产生跟踪 使用差分补偿推挽方法中的其他和信号进行误差信号。

公开(公告)号：US07470879B2

公开(公告)日：2008-12-30

申请号：US11466220

申请日：2006-08-22

申请人： Takuya Anzawa

发明人： Takuya Anzawa

IPC分类号： G11B7/00

CPC分类号： G02B27/40 ,  G02B27/144 ,  G02B27/283 ,  G11B7/0901 ,  G11B7/0912 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/0945 ,  G11B7/131

摘要： An optical pickup for recording or reproducing information to an optical disk, includes: a first photodetector for detecting a return light from the optical disk, wherein the first photodetector is configured so that the first photodetector is divided into three portions in a radial direction corresponding to a radial direction of the optical disk and light receiving elements at both end portions in the radial direction are divided into three portions in substantially a track direction perpendicular to the radial direction, so that the first photodetector includes a light receiving element at a central portion in the radial direction and the three light receiving portions at each of both the end portions to be seven in total to output a light receiving element signal based on light reception of the return light as a track error signal generation signal.

摘要翻译： 一种用于向光盘记录或再现信息的光学拾取器，包括：用于检测来自光盘的返回光的第一光电检测器，其中第一光电检测器被配置为使得第一光电检测器被分成三个对应于 光盘的半径方向和半径方向的两端部的受光元件在与径向垂直的大致轨道方向上被分割成三部分，使得第一光检测器在中央部分包括光接收元件 两个端部中的每一个的径向方向和三个光接收部分总共为7个，以基于返回光的光接收输出光接收元件信号作为轨道误差信号产生信号。