公开(公告)号：US5956140A

公开(公告)日：1999-09-21

申请号：US604384

申请日：1996-02-21

申请人： Kou Ishizuka ,  Takayuki Kadoshima

发明人： Kou Ishizuka ,  Takayuki Kadoshima

IPC分类号： G01D5/38 ,  G01B9/02

CPC分类号： G01D5/38

摘要： An apparatus for obtaining displacement information relative to a member includes a light source for illuminating a phase type diffraction grating on the member, an amplitude grating arranged at the position where interference fringes are generated immediately after emerging of diffracted light from the phase type diffraction grating illuminated by the light source, and a light-receiving element for receiving light emerging from the amplitude grating. The light-receiving element generates a periodic signal as displacement information upon relative movement of the member.

摘要翻译： 用于获得相对于构件的位移信息的装置包括：用于照射构件上的相位衍射光栅的光源;布置在立体上产生干涉条纹的位置上的振幅光栅，该相位型衍射光栅从相位型衍射光栅发出的衍射光 以及用于接收从振幅光栅出射的光的光接收元件。 光接收元件在构件的相对移动时产生周期性信号作为位移信息。

公开(公告)号：US5917182A

公开(公告)日：1999-06-29

申请号：US597102

申请日：1996-02-06

申请人： Kou Ishizuka

发明人： Kou Ishizuka

IPC分类号： G01B11/26 ,  G01D5/38 ,  G01B11/14

CPC分类号： G01D5/38

摘要： In an apparatus for detecting information on the rotation of an object using a grating interference system, the present invention provides a rotation detecting apparatus, which can be sufficiently miniaturized even when using another rotation information detecting section at the same time, and an apparatus for controlling the rotation using the same. The apparatus has a first detecting device for detecting by making the diffracted light from the diffraction grating interfere to detect rotation information of the object, a second detecting device for detecting the light from the predetermined data recording section to detect rotation information of the object, and a light beam illuminating device common to the first and second detecting means for illuminating the diffraction grating and the predetermined data recording section together.

摘要翻译： 在使用光栅干涉系统检测物体的旋转信息的装置中，本发明提供一种旋转检测装置，即使在同时使用其他旋转信息检测部的情况下也能够充分地小型化， 旋转使用相同。 该装置具有用于通过使来自衍射光栅的衍射光干涉来检测物体的旋转信息进行检测的第一检测装置，用于检测来自预定数据记录部分的光以检测物体的旋转信息的第二检测装置，以及 第一和第二检测装置共用的光束照明装置，用于将衍射光栅和预定数据记录部分一起照射。

公开(公告)号：US5880839A

公开(公告)日：1999-03-09

申请号：US949193

申请日：1997-10-14

申请人： Kou Ishizuka ,  Yasushi Kaneda

发明人： Kou Ishizuka ,  Yasushi Kaneda

IPC分类号： G01D5/38 ,  G01B11/00 ,  G01D5/36 ,  G01B9/02

CPC分类号： G01D5/38

摘要： An optical displacement detecting apparatus is provided for detecting information on a relative displacement with respect to an object having a diffraction grating. The apparatus includes a light-emitting element for emitting a diverging light beam, a ball lens for converting the diverging light beam from the light-emitting element into a nearly collimated beam, a grating interference optical system for using the light beam from the ball lens to finally form interference light in such a form that two diffracted light beams from the diffraction grating are coupled, and a light detecting element for detecting the interference light from the grating interference optical system, wherein the relative displacement information with respect to the object is attained from a periodic signal from the light detecting element.

摘要翻译： 提供一种光学位移检测装置，用于检测关于具有衍射光栅的物体的相对位移的信息。 该装置包括用于发射发散光束的发光元件，用于将发光元件的发散光束转换成几乎准直的光束的球透镜，用于使用来自球透镜的光束的光栅干涉光学系统 最终以衍射光栅的两个衍射光束耦合的形式形成干涉光，以及用于检测来自光栅干涉光学系统的干涉光的光检测元件，其中获得相对于物体的相对位移信息 来自光检测元件的周期信号。

公开(公告)号：US5930066A

公开(公告)日：1999-07-27

申请号：US917696

申请日：1997-08-26

申请人： Kou Ishizuka ,  Hidejiro Kadowaki ,  Naoki Kawamata ,  Hiroyuki Hagiwara ,  Jun Ashiwa

发明人： Kou Ishizuka ,  Hidejiro Kadowaki ,  Naoki Kawamata ,  Hiroyuki Hagiwara ,  Jun Ashiwa

IPC分类号： G11B21/10 ,  G11B5/55 ,  G11B5/596 ,  G11B7/00

CPC分类号： G11B5/5534 ,  G11B5/59633

摘要： An apparatus records information on a hard disk with a magnetic head arm provided in a hard disk drive. The apparatus comprises an interference measuring system, containing an outgoing portion for a measuring light beam to the arm and a reference light forming portion, for obtaining relative displacement information with respect to the arm by interfering the reference light with reflected light of the measuring light from the arm or a slider belonging to the arm, the interference measuring system having a light beam deflecting member for deflecting the measuring light and thus guiding the measuring light to a lateral surface of the arm or of the slider, a control system for generating a signal for positioning the arm with respect to the hard disk on the basis of the relative displacement information obtained by the interference measuring system, and a signal system for transmitting a signal for recording information on the hard disk to the magnetic head.

摘要翻译： 设备在硬盘上记录有设置在硬盘驱动器中的磁头臂的信息。 该装置包括干涉测量系统，其包含用于测量光束到臂的出射部分和参考光形成部分，用于通过干涉参考光与来自测量光的反射光的相对位移信息来获得相对于臂的相对位移信息 所述臂或属于所述臂的滑块，所述干涉测量系统具有用于偏转所述测量光的光束偏转构件，并且因此将所述测量光引导到所述臂或所述滑块的侧表面;控制系统，用于产生信号 用于基于由干涉测量系统获得的相对位移信息相对于硬盘定位臂;以及信号系统，用于将用于将信息记录在硬盘上的信号发送到磁头。

公开(公告)号：US5883384A

公开(公告)日：1999-03-16

申请号：US837115

申请日：1997-04-14

申请人： Shigeki Kato ,  Kou Ishizuka

发明人： Shigeki Kato ,  Kou Ishizuka

IPC分类号： G01D5/347 ,  G01D5/34

CPC分类号： G01D5/34738

摘要： This invention relates to an apparatus for detecting rotational information, and includes a disk attachable to a spindle, with relative rotational information of the disk to be detected. The apparatus also includes a a rotation detection grating on the disk, a main body unit independent from the disk, an optical detection unit fixed in the main body unit, a light source, a reference grating, and a light-receiving element fixed to the optical detection unit. The rotational information of the disk relative to the optical detection unit is detected by the light-receiving element by detecting a light beam which is emitted by the light source and goes via the rotation detection grating and the reference grating. A positioning block for positioning the spindle attachable to the disk is also included. The positioning block has a V-shaped portion which is arranged so that slope surfaces thereof are substantially symmetrical about a line that connects a rotation center of the spindle to be attached to the disk and the optical detection unit. The spindle is positioned by putting the spindle on the V-shaped portion.

摘要翻译： 本发明涉及一种用于检测旋转信息的装置，并且包括可附接到主轴的盘，具有待检测盘的相对旋转信息。 该装置还包括盘上的旋转检测光栅，独立于盘的主体单元，固定在主体单元中的光学检测单元，光源，参考光栅和固定到光学器件的光接收元件 检测单元 光盘相对于光学检测单元的旋转信息由光接收元件通过检测由光源发射的光束并通过旋转检测光栅和参考光栅进行检测。 还包括用于定位可附接到盘的主轴的定位块。 定位块具有V字形部分，其布置成使得其倾斜表面围绕将要附接到盘的主轴的旋转中心与光学检测单元连接的线基本对称。 通过将主轴放置在V形部分上来定位主轴。

公开(公告)号：US5534693A

公开(公告)日：1996-07-09

申请号：US534058

申请日：1995-09-26

申请人： Hiroshi Kondo ,  Kou Ishizuka ,  Satoshi Ishii ,  Yasushi Kaneda

发明人： Hiroshi Kondo ,  Kou Ishizuka ,  Satoshi Ishii ,  Yasushi Kaneda

IPC分类号： G01B11/26 ,  G01D5/30 ,  G01D5/38 ,  H01J3/14

CPC分类号： G01D5/38

摘要： In an optical displacement sensor for measuring a moving state of a moving object by projecting a light beam onto a diffraction grating provided on a surface of a scale connected to the moving object and utilizing diffracted light beams of specific orders from among diffracted light beams diffracted by the diffraction grating, a portion of the light beams incident upon the diffraction grating is reflected at a reflecting region provided on the back of the scale a plurality of times. A photosensor detects a change in the amount of light emanating from a transparent or a light-blocking reference position, formed on a region on the surface of the scale other than the region where the diffraction grating is formed. An output signal from the photosensor is utilized as a reference signal, which provides information relating to the moving state of the moving object.

摘要翻译： 在一种光学位移传感器中，用于通过将光束投射到设置在与移动物体连接的标尺的表面上的衍射光栅上，并利用由衍射光线衍射的衍射光束中的特定次数的衍射光束来测量移动物体的移动状态 衍射光栅，入射到衍射光栅上的光束的一部分在设置在刻度表背面的反射区域反射多次。 光传感器检测形成在除了形成衍射光栅的区域之外的标尺表面上的区域的透明或遮光基准位置发出的光量的变化。 来自光传感器的输出信号被用作参考信号，其提供与移动物体的移动状态有关的信息。