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1. 发明授权

US06618218B1 Displacement detecting apparatus and information recording apparatus 失效
标题翻译：位移检测装置和信息记录装置
公开(公告)号：US06618218B1
公开(公告)日：2003-09-09
申请号：US09655342
申请日：2000-09-05
申请人： Hidejiro Kadowaki , Ko Ishizuka , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
发明人： Hidejiro Kadowaki , Ko Ishizuka , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
IPC分类号： G11B5596
CPC分类号： G11B5/59633
摘要： An apparatus for detecting the relative displacement of a surface to be detected, and an apparatus and method for recording information on a hard disc of a hard disk drive using such a detecting apparatus, the detecting apparatus comprising an interference optical system for condensing a light beam on the surface to be detected, and making the reflected light from the surface to be detected interfere with the condensed light beam to thereby form an interference light beam, light receiving means for receiving the interference light beam and outputting bright and dark signals attributable to the relative displacement of the surface to be detected, and condensed light information supplying means for separating part of the reflected light from the surface to be detected from the optical path until the reflected light arrives at said light receiving means, and utilizing the separated light beam to detect the condensed state of the incident light beam onto the surface to be detected or make the condensed state observable.
摘要翻译：一种用于检测待检测表面的相对位移的装置，以及用于使用这种检测装置在硬盘驱动器的硬盘上记录信息的装置和方法，所述检测装置包括：干涉光学系统，用于将光束在要检测的表面上，并且使来自被检测表面的反射光与聚光光束干涉，从而形成干涉光束;光接收装置，用于接收干涉光束并输出归因于要被检测的表面的相对位移，以及聚光信息提供装置，用于从反射光到达所述光接收装置，将从所述光路的待检测表面反射的光的一部分分离，并将所分离的光束将入射光束的凝聚状态检测到待检测或制作的表面上浓缩态可观察。

2. 发明授权

US07034947B2 Compact interference measuring apparatus for detecting the magnitude and direction of positional deviation 失效
标题翻译：用于检测位置偏差的大小和方向的紧凑干涉测量装置
公开(公告)号：US07034947B2
公开(公告)日：2006-04-25
申请号：US10425680
申请日：2003-04-30
申请人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
发明人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
IPC分类号： G01B9/02
CPC分类号： G01B9/02081 , G01B9/02057 , G01B2290/30 , G01B2290/70 , G01D5/344
摘要： Interference measuring apparatus for detecting a plurality of different interference phase signals. The apparatus has a light dividing member for dividing linearly polarized light beams superposed one upon another into a plurality of light beams. The apparatus also includes a light transmitting member with a plurality of light passing portions having different light transmitting properties in conformity with the incidence positions of the plurality of light beams divided by the light dividing member. In addition, the apparatus has a polarizing plate to receive the plurality of light beams that passed through the light transmitting member.
摘要翻译：用于检测多个不同干涉相位信号的干涉测量装置。该装置具有用于将彼此重叠的线偏振光束分成多个光束的分光部件。该装置还包括具有多个光通过部分的透光部件，其具有与由光分割部件分割的多个光束的入射位置一致的透光性能不同。此外，该装置具有用于接收穿过透光构件的多个光束的偏振板。

3. 发明授权

US06473184B1 Interferometer which divides light beams into a plurality of beams with different optical paths 失效
标题翻译：干涉仪，其将光束分成具有不同光路的多个光束
公开(公告)号：US06473184B1
公开(公告)日：2002-10-29
申请号：US09562434
申请日：2000-05-01
申请人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
发明人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
IPC分类号： G01B902
CPC分类号： G01B9/02081 , G01B9/02057 , G01B2290/30 , G01B2290/45 , G01B2290/70
摘要： An interferometer has a semiconductor laser which oscillates in multiple modes, an optical member for providing a beam from the semiconductor laser with a substantial optical path difference between optical paths partially in one beam, and an interference optical system for causing interference, using the beam having traveled via the optical member.
摘要翻译：干涉仪具有以多个模式振荡的半导体激光器，用于提供来自半导体激光器的光束的光学部件在一个光束中部分地在光路之间具有实质光程差的光学部件和用于引起干涉的干涉光学系统，使用具有通过光学构件行进。

4. 发明授权

US07375820B2 Interference measuring apparatus for detecting a plurality of stable phase difference signals 失效
标题翻译：用于检测多个稳定相位差信号的干涉测量装置
公开(公告)号：US07375820B2
公开(公告)日：2008-05-20
申请号：US11335565
申请日：2006-01-20
申请人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
发明人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
IPC分类号： G01B11/14
CPC分类号： G01B9/02081 , G01B9/02057 , G01B2290/30 , G01B2290/70 , G01D5/344
摘要： Interference measuring apparatus having an optical system for dividing a coherent light beam into two light beams, and causing the divided two light beams to pass along discrete optical paths. The light beams are made into linearly polarized light beams orthogonal to each other and given modulation to the phase of the wave front of at least one of them. The wave fronts of the linearly polarized light beams are superposed one upon the others. A light dividing member divides the light beams superposed one upon the other by the optical system into a plurality of light beams. A polarizing plate takes out each light beam with a 45° polarized component, and a plurality of light receiving elements individually receive the light beams taken out by the polarizing plate.
摘要翻译：干涉测量装置具有用于将相干光束分成两束光束的光学系统，并且使分离的两束光束沿分离的光路通过。光束被制成彼此正交的线偏振光束，并且对它们中的至少一个的波前的相位进行调制。线性偏振光束的波前与其他波
数重叠。光分割部件通过光学系统将彼此重叠的光束分成多个光束。偏振片以45°偏振分量取出每个光束，并且多个光接收元件分别接收由偏振片取出的光束。

5. 发明申请

US20060114474A1 Interference measuring apparatus 失效
标题翻译：干涉测量仪
公开(公告)号：US20060114474A1
公开(公告)日：2006-06-01
申请号：US11335565
申请日：2006-01-20
申请人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
发明人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
IPC分类号： G01B9/02
CPC分类号： G01B9/02081 , G01B9/02057 , G01B2290/30 , G01B2290/70 , G01D5/344
摘要： An interference measuring apparatus has an optical system for dividing a coherent light beam into two light beams, causing the divided two light beams to pass along discrete optical paths and making them into linearly polarized light beams orthogonal to each other and given modulation to the phase of the wave front of at least one of them, and again superposing the wave fronts of the linearly polarized light beams one upon the other, a light dividing member for dividing the light beams superposed one upon the other by the optical system into a plurality of light beams, a rock crystal plate formed with a predetermined level difference in conformity with the incidence positions of the plurality of light beams, a polarizing plate for taking out each light beam transmitted through the rock crystal plate with a 45° polarized component, and a plurality of light receiving elements for individually receiving the light beams taken out by the polarizing plate, a plurality of different interference phase signals being provided by the reception of lights of the light receiving elements.
摘要翻译：干涉测量装置具有用于将相干光束分成两束光束的光学系统，使得分离的两束光束沿着分离的光路通过并使它们成为彼此正交的线偏振光束，并且将相位调制到它们中的至少一个的波前，并且一直彼此叠加线偏振光束的波阵面，用于将由光学系统彼此重叠的光束分成多个光的分光部件梁，形成有与多个光束的入射位置一致的预定水平差的岩石晶体板，用于取出以45°偏振分量透射通过岩石晶体板的每个光束的偏振板，以及多个的用于单独接收由偏振板取出的光束的光接收元件，具有多个不同的干涉通过接收光接收元件的光提供nce相位信号。

6. 发明授权

US06674066B1 Encoder 失效
标题翻译：编码器
公开(公告)号：US06674066B1
公开(公告)日：2004-01-06
申请号：US09550165
申请日：2000-04-14
申请人： Yasushi Kaneda , Hidejiro Kadowaki , Ko Ishizuka , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
发明人： Yasushi Kaneda , Hidejiro Kadowaki , Ko Ishizuka , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
IPC分类号： G01D534
CPC分类号： G01D5/36
摘要： An optical type encoder includes a light-emitting element, a scale, a light receiving element for detecting light from the scale when a light beam from the light-emitting element is projected onto the scale, an incremental signal resulting from displacement of the scale being obtained by detection by the light receiving element, two or more mark portions for producing an origin signal formed on the scale, and an origin detecting system for detecting the mark portions for producing the origin signal. The rising position or the falling position of at least one pulse signal indicative of the origin is determined by the detection signals of the two or more mark portions for producing the origin signal by the origin detecting system.
摘要翻译：光学型编码器包括发光元件，刻度尺，用于当来自发光元件的光束投射到刻度上时用于检测来自刻度的光的光接收元件，由标尺的位移产生的增量信号通过光接收元件的检测获得的两个或更多个用于产生在刻度上形成的原点信号的标记部分，以及用于检测用于产生原点信号的标记部分的原点检测系统。指示原点的至少一个脉冲信号的上升位置或下降位置由用于由原点检测系统产生原点信号的两个或更多个标记部分的检测信号确定。

7. 发明授权

US06657181B1 Optical element used in compact interference measuring apparatus detecting plurality of phase difference signals 失效
标题翻译：用于检测多个相位差信号的紧凑干涉测量装置中使用的光学元件
公开(公告)号：US06657181B1
公开(公告)日：2003-12-02
申请号：US09523312
申请日：2000-03-10
申请人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
发明人： Ko Ishizuka , Hidejiro Kadowaki , Yasushi Kaneda , Shigeki Kato , Takayuki Kadoshima , Sakae Horyu
IPC分类号： G01J2126
CPC分类号： G01B9/02081 , G01B9/02057 , G01B2290/30 , G01B2290/70 , G01D5/344
摘要： An interference measuring apparatus has an optical system for dividing a coherent light beam into two light beams, causing the divided two light beams to pass along discrete optical paths and making them into linearly polarized light beams orthogonal to each other and given modulation to the phase of the wave front of at least one of them, and again superposing the wave fronts of the linearly polarized light beams one upon the other, a light dividing member for dividing the light beams superposed one upon the other by the optical system into a plurality of light beams, a rock crystal plate formed with a predetermined level difference in conformity with the incidence positions of the plurality of light beams, a polarizing plate for taking out each light beam transmitted through the rock crystal plate with a 45° polarized component, and a plurality of light receiving elements for individually receiving the light beams taken out by the polarizing plate, a plurality of different interference phase signals being provided by the reception of lights of the light receiving elements.
摘要翻译：干涉测量装置具有用于将相干光束分成两束光束的光学系统，使得分离的两束光束沿着分离的光路通过并使它们成为彼此正交的线偏振光束，并且将相位调制到它们中的至少一个的波前，并且一直彼此叠加线偏振光束的波阵面，用于将由光学系统彼此重叠的光束分成多个光的分光部件梁，形成有与多个光束的入射位置一致的预定水平差的岩石晶体板，用于取出以45°偏振分量透射通过岩石晶体板的每个光束的偏振板，以及多个的用于单独接收由偏振板取出的光束的光接收元件，具有多个不同的干涉通过接收光接收元件的光提供nce相位信号。

8. 发明授权

US06259531B1 Displacement information measuring apparatus with hyperbolic diffraction grating 有权
$Displacement information measuring apparatus with hyperbolic diffraction grating$
标题翻译：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
申请人： Makoto Takamiya , Hidejiro Kadowaki , Kou Ishizuka , Yasushi Kaneda
发明人： Makoto Takamiya , Hidejiro Kadowaki , Kou Ishizuka , Yasushi Kaneda
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。

9. 发明授权

US5666196A Optical detection apparatus for detecting information relating to relative displacement of an object on whch a diffraction grating is formed 失效
$Optical detection apparatus for detecting information relating to relative displacement of an object on whch a diffraction grating is formed$
标题翻译：用于检测与其上形成有衍射光栅的物体的相对位移有关的信息的光学检测装置
公开(公告)号：US5666196A
公开(公告)日：1997-09-09
申请号：US560511
申请日：1995-11-17
申请人： Satoshi Ishii , Ko Ishizuka , Hiroshi Kondo , Yasushi Kaneda
发明人： Satoshi Ishii , Ko Ishizuka , Hiroshi Kondo , Yasushi Kaneda
IPC分类号： B23Q17/24 , G01B11/00 , G01D5/38
CPC分类号： G01D5/38
摘要： An apparatus for optically detecting information relating to the relative displacement of an object on which a diffraction grating, arranged in two axial directions with a predetermined pitch. The apparatus includes a light-emitting device configured to emit a light beam, and a first optical element configured to divide the light beam from the light-emitting device into a plurality of light beams directed in each of the two axial directions to the diffraction grating on the object which produces a plurality of diffracted light beams for each of the two axial directions. The apparatus also includes a second optical element positioned and configured to receive and combine a plurality of diffracted light beams for each of the two axial directions from the diffraction grating on the object, and a plurality of detection units, each configured to receive and detect the combined plurality of diffracted light beams for one of the two axial directions, thereby detecting information relating to the relative displacement of the object in each of the two axial directions.
摘要翻译：一种用于光学检测与其上以预定间距沿两个轴向布置的衍射光栅的物体的相对位移有关的信息的装置。该装置包括被配置为发射光束的发光装置和被构造成将来自发光装置的光束分成在两个轴向方向中的每一个中的多个光束到衍射光栅的第一光学元件在产生用于两个轴向方向中的每一个的多个衍射光束的物体上。该装置还包括一个第二光学元件，其定位和配置为从物体上的衍射光栅接收和组合两个轴向方向中的每一个的多个衍射光束，以及多个检测单元，每个检测单元被配置为接收和检测将多个衍射光束组合成两个轴向中的一个，从而检测与两个轴向方向中的每一个中的物体的相对位移有关的信息。

10. 发明授权

US5448358A Optical apparatus and displacement-information measuring apparatus using the same 失效
标题翻译：光学装置及其位移信息测量装置
公开(公告)号：US5448358A
公开(公告)日：1995-09-05
申请号：US187869
申请日：1994-01-28
申请人： Ko Ishizuka , Hiroshi Kondo , Satoshi Ishii , Yasushi Kaneda
发明人： Ko Ishizuka , Hiroshi Kondo , Satoshi Ishii , Yasushi Kaneda
IPC分类号： G01B11/00 , G01D5/36 , G01D5/38
CPC分类号： G01D5/38
摘要： In an optical apparatus, a light beam from a light-emitting device is divided into a plurality of light beams by a first diffraction grating provided on a transparent substrate. The plurality of light beams are guided to a diffraction-grating scale which moves together with an object whose relative displacement is to be measured. Two light beams emanated from the diffraction-grating scale are combined by a second diffraction grating provided on the transparent substrate. A resultant light beam from the second diffraction grating is guided to photosensors. Relative displacement between the transparent substrate and the object is measured using signals from the photosensors. Indices for displaying positional information of a condenser lens provided on the transparent substrate and/or the first and second diffraction gratings are also provided on the transparent substrate. The optical apparatus is used within displacement-information measuring apparatus.
摘要翻译：在光学装置中，通过设置在透明基板上的第一衍射光栅将来自发光装置的光束分割为多个光束。多个光束被引导到与要测量相对位移的物体一起移动的衍射光栅标尺。通过设置在透明基板上的第二衍射光栅将从衍射光栅尺发出的两束光束组合。来自第二衍射光栅的合成光束被引导到光电传感器。使用来自光电传感器的信号测量透明基板和物体之间的相对位移。用于显示设置在透明基板和/或第一和第二衍射光栅上的聚光透镜的位置信息的指示也设置在透明基板上。光学装置用于位移信息测量装置。

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