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1.发明授权Displacement information measuring apparatus with hyperbolic diffraction grating 有权具有双曲线衍射光栅的位移信息测量装置公开(公告)号：US06259531B1
公开(公告)日：2001-07-10
申请号：US09333043
申请日：1999-06-15
IPC分类号： G01B902
CPC分类号： G01S17/58 , G01D5/34707 , G01P3/366
摘要： An apparatus for detecting the displacement information of an object has a light source, a diffraction grating for diffracting a light beam from the light source so that the light beam diffracted by the diffraction grating is incident on the object, and a photodetector for detecting the light from the object caused upon the incidence of the light beam thereon by the diffraction grating. Information regarding the relative displacement to the object along a predetermined direction is detected on the basis of a light detection signal from the photodetector. The diffraction grating is formed so that the light beam applied to the object may be condensed on the object in a direction in which the relative displacement to the object cannot be detected by the signal from the photodetector.
摘要翻译： 用于检测物体的位移信息的装置具有光源，用于衍射来自光源的光束的衍射光栅，使得被衍射光栅衍射的光束入射到物体上，以及用于检测光的光电检测器 由衍射光栅在其上的光束的入射引起的物体。 基于来自光电检测器的光检测信号来检测关于沿着预定方向到物体的相对位移的信息。 衍射光栅被形成为使得施加到物体的光束可以在物体上沿着与来自光电检测器的信号不能检测到物体的相对位移的方向上会聚在物体上。
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2.发明授权Interference device, position detecting device, positioning device and information recording apparatus using the same 失效干涉装置，位置检测装置，定位装置及使用该装置的信息记录装置公开(公告)号：US06631047B2
公开(公告)日：2003-10-07
申请号：US09156491
申请日：1998-09-18
申请人： Kou Ishizuka , Hidejiro Kadowaki , Naoki Kawamata , Hiroyuki Hagiwara , Makoto Takamiya , Shigeki Kato , Hiroyuki Shiomi
发明人： Kou Ishizuka , Hidejiro Kadowaki , Naoki Kawamata , Hiroyuki Hagiwara , Makoto Takamiya , Shigeki Kato , Hiroyuki Shiomi
IPC分类号： G11B5596
CPC分类号： G11B5/59677
摘要： An apparatus having a first system for forming a composite light beam of two light beams to be made to interfere with each other, a splitting member for amplitude-splitting the composite light beam into three or more split light beams in the same area, and a second system for obtaining interference light beams of different phases from the plurality of split light beams. Also, an apparatus for effecting information recording on a hard disc drive device comprising an (i) optical system for splitting a light beam into two light beams, causing one of the two light beams to be condensed and reflected by the side of an arm for a recording reading head in the hard disc drive device, and superposing the condensed and reflected light beam on the other light beam to thereby obtain a composite light beam, (ii) a splitting member for amplitude-splitting the composite light beam into three or more split light beams in the same area, (iii) an optical member for obtaining interference light beams of different phases from the plurality of split light beams, (iv) light receiving elements for detecting respective ones of the interference light beams of different phases, (v) a control system for effecting the positioning of the arm on the basis of the result of the detection by each of the light receiving elements, and (vi) a signal writing-in system for writing a signal into a hard disc through the recording reading head each time the arm is positioned.
摘要翻译： 一种具有第一系统的装置，用于形成要彼此干涉的两个光束的复合光束，用于将复合光束分解成同一区域中的三个或更多个分束光束的分束构件，以及 用于从多个分裂光束获得不同相位的干涉光束的第二系统。 另外，一种用于在硬盘驱动装置上进行信息记录的装置，包括：（i）用于将光束分成两束光束的光学系统，使得两个光束中的一个被臂的侧面冷凝和反射， 在所述硬盘驱动装置中的记录读取头，并且将所述聚光反射光束重叠在所述另一光束上，从而获得复合光束;（ii）用于将所述复合光束分解为三个以上的分割部件 在相同的区域中分割光束，（iii）用于从多个分裂光束获得不同相位的干涉光束的光学部件，（iv）用于检测不同相位的干涉光束的各个的光接收元件（ v）用于根据每个光接收元件的检测结果来实现臂的定位的控制系统，以及（vi）用于写入信号的信号写入系统 每当手臂定位时，通过记录读取头进入硬盘。
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3.发明授权Position detecting apparatus, positioning apparatus, and information recording apparatus using the same 失效位置检测装置，定位装置以及使用其的信息记录装置
公开(公告)号：US6151185A
公开(公告)日：2000-11-21
申请号：US923528
申请日：1997-09-04
申请人： Kou Ishizuka , Hidejiro Kadowaki , Makoto Takamiya
发明人： Kou Ishizuka , Hidejiro Kadowaki , Makoto Takamiya
CPC分类号： G11B5/59627 , G11B5/59633
摘要： An apparatus for detecting position change information of an object includes a contact member for contacting the object, and a detecting unit for obtaining position change information of the object by detecting a change in force applied from the object to the contact member.
摘要翻译： 一种用于检测物体的位置变化信息的装置包括用于接触物体的接触构件和用于通过检测从物体施加到接触构件的力的变化来获得物体的位置变化信息的检测单元。
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公开(公告)号：US5930066A
公开(公告)日：1999-07-27
申请号：US917696
申请日：1997-08-26
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。
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5.发明授权
公开(公告)号：US6005667A
公开(公告)日：1999-12-21
申请号：US897548
申请日：1997-07-21
申请人： Makoto Takamiya , Kou Ishizuka
发明人： Makoto Takamiya , Kou Ishizuka
CPC分类号： G11B5/5526 , G01D5/38 , G11B5/59605 , G11B5/59677
摘要： This invention relates to an apparatus for optically measuring the relative displacement of an object with a diffraction grating, and the apparatus has a light projection system for spot-projecting a light beam onto the diffraction grating and light detection means for receiving an interference light beam obtained by multiplexing diffracted light beams of different orders from the spot projection position on the diffraction grating in a state in which the wavefronts of the diffracted light beams are matched with each other. The relative displacement of the object is measured upon light reception of the light detection means.
摘要翻译： 本发明涉及一种用于光学测量物体与衍射光栅的相对位移的装置，该装置具有用于将光束点投影到衍射光栅上的光投影系统和用于接收获得的干涉光束的光检测装置 通过在衍射光束的波前彼此匹配的状态下将不同阶数的衍射光束与衍射光栅上的点投影位置进行多路复用。 在光检测装置的光接收时测量物体的相对位移。
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6.发明授权
公开(公告)号：US5742391A
公开(公告)日：1998-04-21
申请号：US579347
申请日：1995-12-27
申请人： Yasushi Kaneda , Kou Ishizuka , Kenji Hisamoto
发明人： Yasushi Kaneda , Kou Ishizuka , Kenji Hisamoto
CPC分类号： G01D5/38
摘要： An optical type sensor has a light emitting element, a light receiving element, at least one optical element acting on a light beam emitted from the light emitting element, in an optical path till the light beam enters the light receiving element, and a spacer member disposed to define a spacing between the light emitting element and/or the light receiving element and the at least one optical element, the spacer member having a structure for being mounted to other member.
摘要翻译： 光学型传感器具有发光元件，光接收元件，至少一个作用在从发光元件发射的光束上的光学元件，直到光束进入光接收元件的光路中，以及间隔元件 设置成限定发光元件和/或光接收元件与至少一个光学元件之间的间隔，间隔元件具有用于安装到其它元件的结构。
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7.发明授权
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
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。
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8.发明授权Optical displacement detection apparatus employing diffraction gratings and a reference position sensor located on the scale 失效使用衍射光栅的光位移检测装置和位于刻度上的基准位置传感器
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
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。
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公开(公告)号：US06831267B2
公开(公告)日：2004-12-14
申请号：US09780433
申请日：2001-02-12
申请人： Kou Ishizuka
发明人： Kou Ishizuka
IPC分类号： H01J314
CPC分类号： G01D5/38
摘要： A light beam emitted from a semiconductor-laser light source is projected onto a diffraction-grating scale after passing through a collimator lens, a beam splitter and a central portion of an annular reflection grating. Two diffracted light beams reflected from the diffraction-grating scale are projected onto the annular reflection grating. The annular reflection grating diffracts the light beams projected onto all portions thereon to a substantially original direction to be projected onto and diffracted from the same position on the diffraction-grating scale. The diffracted light beams are superposed and the resultant light beam is returned to the beam splitter. The light beam is guided by the beam splitter in a direction different from the semiconductor-laser light source, and is detected by a photosensor as an interference light beam. Even if the oscillation wavelength of the semiconductor-laser light source changes, for example, due to a change in the temperature environment, to change the diffraction angles of the diffracted light beams, the light beams are diffracted with original diffraction angles by the annular reflection grating, the position of rediffraction by the diffraction-grating scale and the state of emitted light beams are invariable. Hence, the state of interference is stable.
摘要翻译： 从半导体激光光源射出的光束经过准直透镜，分束器和环形反射光栅的中心部分投影到衍射光栅刻度上。 从衍射光栅标尺反射的两个衍射光束被投射到环形反射光栅上。 环形反射光栅将投影到其上的所有部分上的光束衍射到基本上原始的方向上，以投影到衍射光栅标尺上的相同位置并衍射。 衍射光束被重叠，所得到的光束返回到分束器。 光束由分束器沿与半导体激光光源不同的方向引导，并被光电传感器检测为干涉光束。 即使半导体激光光源的振荡波长例如由于温度环境的变化而变化，为了改变衍射光束的衍射角，光束以原始的衍射角被环形反射衍射 光栅，通过衍射光栅标度的再衍射位置和发射光束的状态是不变的。 因此，干扰状态是稳定的。
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公开(公告)号：US5067813A
公开(公告)日：1991-11-26
申请号：US334197
申请日：1989-04-06
摘要： Disclosed is an optical apparatus which can be used for measuring displacement of an object. The apparatus includes an optical system for forming a linearly polarized beam whose polarization direction changes, a reflecting surface for reflecting the beam and for directing the beam in a predetermined direction, a photoelectric converter for photoelectrically converting a reflected beam directed in the predetermined direction, a polarizing device, arranged in an optical path of the reflected beam, for directing only a P-polarized beam or an S-polarized beam of the reflected beam toward the photoelectric converter.
摘要翻译： 公开了一种可用于测量物体的位移的光学装置。 该装置包括用于形成偏振方向变化的线性偏振光束的光学系统，用于反射光束并用于沿预定方向引导光束的反射表面，用于光电转换沿预定方向指向的反射光束的光电转换器， 偏振装置，布置在反射光束的光路中，用于仅将反射光束的P偏振光束或S偏振光束引向光电转换器。
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