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    Objective lens
    3.
    发明申请
    Objective lens 审中-公开
    物镜

    公开(公告)号：US20090040603A1

    公开(公告)日：2009-02-12

    申请号：US12222364

    申请日：2008-08-07

    申请人： Tatsuya Nagahama ,  Katsuyoshi Arisawa

    发明人： Tatsuya Nagahama ,  Katsuyoshi Arisawa

    IPC分类号： G02B21/04 ,  G02B27/10 ,  G02B21/06

    CPC分类号： G02B21/082 ,  G02B21/02

    摘要： In order to provide an objective lens which can reduce the generation of flare light, an objective lens including a front-group lens, a rear-group lens arranged on an optic axis of the front-group lens with the front-group lens interposed between an object plane and the rear-group lens, and a semitransparent mirror arranged between the front-group lens and the rear-group lens for reflecting illumination into the front-group lens, transmitting reflected light from the object plane and entering the transmitted light into the rear-group lens is provided. The front-group lens is a single lens or a cemented lens formed by sticking two lenses together.

    摘要翻译： 为了提供能够减少耀斑光的产生的物镜，包括前组透镜的物镜，配置在前组透镜的光轴上的后组透镜，前组透镜介于 物镜和后组透镜，以及配置在前组透镜和后组透镜之间的半透射镜，用于将照明反射到前组透镜中，将来自物平面的反射光传输到透射光 设置后组透镜。 前组透镜是通过将两个透镜粘在一起形成的单个透镜或胶合透镜。

    Illuminance calibrating method of illuminator, illuminance calibration controller of illuminator, illuminance calibrating program of illuminator, recording medium storing the program and measuring tool
    4.
    发明申请
    Illuminance calibrating method of illuminator, illuminance calibration controller of illuminator, illuminance calibrating program of illuminator, recording medium storing the program and measuring tool 有权
    照明器的照度校准方法，照明器的照度校准控制器，照明器的照度校准程序，存储程序和测量工具的记录介质

    公开(公告)号：US20050007604A1

    公开(公告)日：2005-01-13

    申请号：US10754743

    申请日：2004-01-09

    申请人： Hiroyuki Yoshida ,  Tatsuya Nagahama

    发明人： Hiroyuki Yoshida ,  Tatsuya Nagahama

    IPC分类号： H05B37/02 ,  G01J1/32 ,  G06T1/00 ,  G01B11/24

    CPC分类号： G01J1/32

    摘要： An illuminance calibrating method includes a light-receiving intensity measuring step (ST100) for measuring a relationship between an applied current value and a light-receiving intensity of a CCD camera of which exposure time is capable of being changed by taking an image of an illumination from an illuminator by the CCD camera while changing the exposure time of the CCD camera, a characteristic curve calculating step (ST200) for calculating a characteristic curve of the illumination intensity of the illuminator and the applied current value based on the result obtained in the light-receiving intensity measuring step (ST100), and a command-value/current-value table generating step (ST300) for generating a table of the command value and the applied current value based on the calculated characteristic curve.

    摘要翻译： 照度校准方法包括：光接收强度测量步骤（ST100），用于测量施加的电流值与通过拍摄照明的图像能够改变曝光时间的CCD照相机的光接收强度之间的关系 在改变CCD照相机的曝光时间的情况下，通过CCD照相机从照明器发出的照明器，基于在光中获得的结果计算照明器的照明强度的特性曲线和施加的电流值的特性曲线计算步骤（ST200） - 接收强度测量步骤（ST100）和用于基于所计算的特性曲线生成指令值和所施加的电流值的表的命令值/电流值表生成步骤（ST300）。

    Double telecentric objective lens
    5.
    发明授权
    Double telecentric objective lens 有权
    双重远心物镜

    公开(公告)号：US06639653B2

    公开(公告)日：2003-10-28

    申请号：US10174220

    申请日：2002-06-18

    申请人： Tatsuya Nagahama ,  Katsuyoshi Arisawa

    发明人： Tatsuya Nagahama ,  Katsuyoshi Arisawa

    IPC分类号： G03B2754

    CPC分类号： G02B13/22

    摘要： A double telecentric objective lens includes a front group and a rear group each having a positive refracting power as a whole. The front group includes a first unit and a second unit. The first unit is formed of a cemented lens composed of a convex lens and a concave lens. The second unit includes a convex lens or a cemented lens composed of a convex lens and a concave lens, and a concave lens. The rear group includes a third unit and a fourth unit. The third unit includes a concave lens and a cemented lens composed of a convex lens and a concave lens. The fourth unit is formed of a cemented lens composed of a convex lens and a concave lens. In the above configuration, the optical constants of the lenses are determined so as to satisfy the following conditions: n1n−n1p>0.1  (1) &ngr;1p−&ngr;1n>25  (2) 0.3 fF−r2n

    摘要翻译： 双重远心物镜包括前组和后组，每组具有整体正的折射能力。 前组包括第一单元和第二单元。 第一单元由由凸透镜和凹透镜构成的胶合透镜形成。 第二单元包括凸透镜或由凸透镜和凹透镜构成的胶合透镜和凹透镜。 后组包括第三单元和第四单元。 第三单元包括凹透镜和由凸透镜和凹透镜组成的胶合透镜。 第四单元由凸透镜和凹透镜构成的胶合透镜形成。 在上述结构中，透镜的光学常数被确定为满足以下条件：

    Photoelectric encoder
    6.
    发明授权
    Photoelectric encoder 有权
    光电编码器

    公开(公告)号：US07329859B2

    公开(公告)日：2008-02-12

    申请号：US11371973

    申请日：2006-03-09

    申请人： Miyako Mizutani ,  Tatsuya Nagahama

    发明人： Miyako Mizutani ,  Tatsuya Nagahama

    IPC分类号： G01D5/34 ,  G01B11/14

    CPC分类号： G01D5/34715

    摘要： A photoelectric encoder that has a lens optical system including a lens inserted between a main scale and a light receiving element. In the photoelectric encoder, three planes extended from a surface of the main scale, a principal plane of the lens, and an image plane of the light receiving element are disposed so as to intersect at a single point and satisfy the Scheimpflug rule. Focus can thereby be obtained over the entire image plane, so that a reduction in contrast is prevented, even if the optical axis is inclined to make an optical system smaller.

    摘要翻译： 一种具有透镜光学系统的光电编码器，该透镜光学系统包括插入主标尺和光接收元件之间的透镜。 在光电编码器中，从主刻度表面延伸的三个平面，透镜的主平面和光接收元件的像面设置成在单点相交并满足Scheimpflug规则。 因此可以在整个图像平面上获得聚焦，从而即使光轴倾斜以使光学系统更小，也可以防止对比度的降低。

    Ring illuminator
    7.
    发明授权
    Ring illuminator 有权
    环照明器

    公开(公告)号：US06857762B2

    公开(公告)日：2005-02-22

    申请号：US10436101

    申请日：2003-05-13

    申请人： Seiji Shimokawa ,  Tatsuya Nagahama ,  Kuniaki Obata ,  Hirotaka Matsubara

    发明人： Seiji Shimokawa ,  Tatsuya Nagahama ,  Kuniaki Obata ,  Hirotaka Matsubara

    IPC分类号： G01B11/00 ,  F21V7/00 ,  G01N21/01 ,  G01N21/27 ,  G01N21/84 ,  G01N21/88 ,  G02B21/08 ,  G02B27/10 ,  G03B15/00 ,  G03B15/02 ,  G03B15/05 ,  F21V5/00

    CPC分类号： G02B27/145 ,  F21V7/0008 ,  F21Y2115/10 ,  G01N21/8806 ,  G01N2201/062 ,  G01N2201/0627 ,  G02B21/084 ,  Y10S362/80

    摘要： A plurality of light emitting elements comprise a number of groups having light emitting colors different from each other. The light emitting element groups are arranged in ring shapes about an optical axis of an optical system in a plane or planes substantially orthogonal to the optical axis. A combining unit combines radiation light beams of different light emitting colors to generate illumination light having a given hue. The combining unit is provided downstream of the light emitting elements along a light emitting direction. A focusing unit focuses the illumination light in the direction toward the optical axis and is provided downstream of the combining unit. Accordingly, it is possible to direct illumination light having uniform and non-irregular hue, the hue corresponding to a surface color of an object to be measured, to the object to be measured.

    摘要翻译： 多个发光元件包括具有彼此不同的发光颜色的多个组。 发光元件组在基本上与光轴正交的平面或平面中围绕光学系统的光轴布置成环形。 组合单元组合具有不同发光颜色的辐射光束以产生具有给定色调的照明光。 组合单元沿着发光方向设置在发光元件的下游。 聚焦单元将照明光朝向光轴的方向聚焦，并设置在组合单元的下游。 因此，可以将具有均匀和非不规则色调的照明光，对应于要测量的物体的表面颜色的色调引导到被测量物体。

    Light-interference measuring apparatus
    8.
    发明授权
    Light-interference measuring apparatus 有权
    光干涉测量装置

    公开(公告)号：US08891090B2

    公开(公告)日：2014-11-18

    申请号：US13023984

    申请日：2011-02-09

    申请人： Tatsuya Nagahama ,  Koji Kubo ,  Hidemitsu Asano ,  Jyota Miyakura

    发明人： Tatsuya Nagahama ,  Koji Kubo ,  Hidemitsu Asano ,  Jyota Miyakura

    IPC分类号： G01B11/02 ,  G01B9/02

    CPC分类号： G01B9/02068 ,  G01B9/02057 ,  G01B9/0209

    摘要： A light-interference measuring apparatus including: a light source of a broad band light; an objective lens section to branch an optical path of the broad band light into a reference optical path including a reference mirror and a measuring optical path including a measuring object and to output a superposed wave of two branched lights; and an optical path length changing section to change an optical path length of either the reference optical path or the measuring optical path; wherein the objective lens section includes a phase difference control member to control a phase difference between the reference light and the object light to generate destructive interference fringes, and a minimum luminance position detecting section to detect minimum luminance position of the destructive interference fringes.

    摘要翻译： 1.一种光干涉测量装置，包括：宽带光的光源; 物镜部分，用于将宽带光的光路分支成包括参考反射镜的参考光路和包括测量对象的测量光路，并输出两个分支光的叠加波; 以及光路长度变更部，其改变基准光路或测量光路的光路长度; 其特征在于，所述物镜部包括相位差控制部件，用于控制所述基准光与所述物体光之间的相位差，生成相消干涉条纹;以及最小亮度位置检测部，检测所述相干干涉条纹的最小亮度位置。

    Optical encoder using off-axis imaging through a lens
    9.
    发明授权
    Optical encoder using off-axis imaging through a lens 有权
    光学编码器通过镜头使用离轴成像

    公开(公告)号：US08637805B2

    公开(公告)日：2014-01-28

    申请号：US12956992

    申请日：2010-11-30

    申请人： Eric Herbert Altendorf ,  Tatsuya Nagahama ,  Miyako Mizutani ,  Toru Yaku

    发明人： Eric Herbert Altendorf ,  Tatsuya Nagahama ,  Miyako Mizutani ,  Toru Yaku

    IPC分类号： G01D5/34

    CPC分类号： G01D5/34

    摘要： A miniaturized optical encoder capable of obtaining a sufficient amount of light in the light receiving element is provided. An optical encoder 1 includes a scale 2 having a scale track 2′ and a readhead 3 having a light source 31 that emits light to the scale track 2′, a scale-side lens 32 that transmits the light emitted from the light source 31 to the scale track 2′, and a light receiving element 33 that receives the light reflected by the scale track 2′ through the scale-side lens 32. The light source 31 is arranged between the scale-side lens 32 and the light receiving element 33. An optical axis Lsrc of the light source 31 is matched with an optical axis Ls of the scale-side lens 32 in a reading direction of the scale 2 and is separated from an optical axis Ls of the scale-side lens 32 by a predetermined distance D in a direction perpendicular to the reading direction of the scale 2.

    摘要翻译： 提供能够在光接收元件中获得足够量的光的小型化光学编码器。 光学编码器1包括具有刻度轨道2'的标尺2和具有向标尺轨道2'发射光的光源31的读取头3，将从光源31发射的光透射到比例侧透镜32 刻度轨道2'，以及光接收元件33，其接收由刻度轨道2'反射的光通过刻度侧透镜32.光源31配置在刻度侧透镜32与受光元件33之间 光标31的光轴Lsrc在刻度尺2的读取方向上与刻度侧透镜32的光轴Ls匹配，并且与标尺侧透镜32的光轴Ls分离预定的 距离D与标尺2的读取方向垂直的方向。

    Interference objective lens unit and light-interference measuring apparatus using thereof
    10.
    发明授权
    Interference objective lens unit and light-interference measuring apparatus using thereof 有权
    干涉物镜单元及其使用的光干涉测量装置

    公开(公告)号：US08553232B2

    公开(公告)日：2013-10-08

    申请号：US13279855

    申请日：2011-10-24

    申请人： Sadayuki Matsumiya ,  Tatsuya Nagahama ,  Atsushi Usami

    发明人： Sadayuki Matsumiya ,  Tatsuya Nagahama ,  Atsushi Usami

    IPC分类号： G01B11/02 ,  G01B9/02

    CPC分类号： G01B11/2441 ,  G01B5/0014 ,  G01B9/02057 ,  G01B9/02058 ,  G01B9/0209

    摘要： Disclosed is an interference objective lens unit, comprising: an objective lens; a beam splitter that splits the light transmitted through the objective lens into a reference optical path in which a reference mirror is provided and a measuring optical path in which the measuring object is placed, and that superposes the split lights to output interference light; a first holder that holds the objective lens and that is formed by material having a first linear expansion coefficient; and a second holder that holds the reference mirror and that is formed by material having a second linear expansion coefficient different from the first linear expansion coefficient, wherein when a usage environment temperature changes, a difference in the linear expansion coefficients between the first holder and the second holder corrects an optical path difference between the reference optical path and the measuring optical path.

    摘要翻译： 公开了一种干涉物镜单元，包括：物镜; 分束器，其将透过物镜的光分成其中设置参考反射镜的参考光路和放置测量对象的测量光路，并将分光灯叠加以输出干涉光; 保持物镜并由具有第一线性膨胀系数的材料形成的第一保持器; 以及第二保持器，其保持所述参考镜并且由具有不同于所述第一线性膨胀系数的第二线性膨胀系数的材料形成，其中当使用环境温度改变时，所述第一保持器和所述第二保持器之间的线性膨胀系数的差异 第二支架校正参考光路和测量光路之间的光程差。