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公开(公告)号：US20080277569A1
公开(公告)日：2008-11-13
申请号：US11854635
申请日：2007-09-13
IPC分类号： G01D5/34
CPC分类号： G01D5/36 , G01D5/34707
摘要： In an optical encoder comprising an optical scale in which a light transmission portion and a light non-transparent portion are arranged and an output pattern obtained by emitting an incident light functions as an optical code, a light source portion and a light detecting portion, the light non-transparent portion is constituted of at least one pair of inclined surfaces which are opposed in such a manner as to become farther away from each other towards the side where the incident light enters and set so that an incident angle of the optical axis of the incident light from the light source should not be smaller than a critical angle of incidence, and the light non-transparent portion is constructed so that the incident light which enters one inclined surface should be totally reflected thereon to enter the other inclined surface and then at least part of the incident light should be reflected on the other inclined surface, and a reflected light which is reflected on the other inclined surface should not enter a light emitting portion of the light source and a reflecting portion around the light emitting portion.
摘要翻译： 在包括其中布置有光透射部分和光不透明部分的光学标尺的光学编码器中，并且通过发射入射光获得的输出图案用作光学代码，光源部分和光检测部分， 光不透明部分由至少一对倾斜表面构成，所述至少一对倾斜表面以相对于彼此更远离入射光入射侧的方式相对的方式构成，使得入射光的入射角 来自光源的入射光不应小于临界入射角，并且光非透明部分被构造成使得入射到一个倾斜表面的入射光应该被全反射以进入另一个倾斜表面，然后 入射光的至少一部分应该在另一个倾斜表面上反射，并且在另一个倾斜表面上反射的反射光倾斜 表面不应该进入光源的发光部分和围绕发光部分的反射部分。
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2.发明授权Optical encoder with reduced reflected light error having a light non-transparent portion with inclined surfaces 有权具有减弱的反射光误差的光学编码器具有具有倾斜表面的光不透明部分公开(公告)号：US07285769B2
公开(公告)日：2007-10-23
申请号：US10555101
申请日：2004-08-23
IPC分类号： G01D5/34
CPC分类号： G01D5/36 , G01D5/34707
摘要： In an optical encoder comprising an optical scale in which a light transmission portion and a light non-transparent portion are arranged and an output pattern obtained by emitting an incident light functions as an optical code, a light source portion and a light detecting portion, the light non-transparent portion is constituted of at least one pair of inclined surfaces which are opposed in such a manner as to become farther away from each other towards the side where the incident light enters and set so that an incident angle of the optical axis of the incident light from the light source should not be smaller than a critical angle of incidence, and the light non-transparent portion is constructed so that the incident light which enters one inclined surface should be totally reflected thereon to enter the other inclined surface and then at least part of the incident light should be reflected on the other inclined surface, and a reflected light which is reflected on the other inclined surface should not enter a light emitting portion of the light source and a reflecting portion around the light emitting portion.
摘要翻译： 在包括其中布置有光透射部分和光不透明部分的光学标尺的光学编码器中，并且通过发射入射光获得的输出图案用作光学代码，光源部分和光检测部分， 光不透明部分由至少一对倾斜表面构成，所述至少一对倾斜表面以相对于彼此更远离入射光入射和设定的一侧的方式构成，使得光轴的光轴的入射角 来自光源的入射光不应小于临界入射角，并且光非透明部分被构造成使得入射到一个倾斜表面的入射光应该被全反射以进入另一个倾斜表面，然后 入射光的至少一部分应该在另一个倾斜表面上反射，并且在另一个倾斜表面上反射的反射光倾斜 表面不应该进入光源的发光部分和围绕发光部分的反射部分。
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公开(公告)号：US20070034786A1
公开(公告)日：2007-02-15
申请号：US10555101
申请日：2004-08-23
CPC分类号： G01D5/36 , G01D5/34707
摘要： In an optical encoder comprising an optical scale in which a light transmission portion and a light non-transparent portion are arranged and an output pattern obtained by emitting an incident light functions as an optical code, a light source portion and a light detecting portion, the light non-transparent portion is constituted of at least one pair of inclined surfaces which are opposed in such a manner as to become farther away from each other towards the side where the incident light enters and set so that an incident angle of the optical axis of the incident light from the light source should not be smaller than a critical angle of incidence, and the light non-transparent portion is constructed so that the incident light which enters one inclined surface should be totally reflected thereon to enter the other inclined surface and then at least part of the incident light should be reflected on the other inclined surface, and a reflected light which is reflected on the other inclined surface should not enter a light emitting portion of the light source and a reflecting portion around the light emitting portion.
摘要翻译： 在包括其中布置有光透射部分和光不透明部分的光学标尺的光学编码器中，并且通过发射入射光获得的输出图案用作光学代码，光源部分和光检测部分， 光不透明部分由至少一对倾斜表面构成，所述至少一对倾斜表面以相对于彼此更远离入射光入射侧的方式相对的方式构成，使得入射光的入射角 来自光源的入射光不应小于临界入射角，并且光非透明部分被构造成使得入射到一个倾斜表面的入射光应该被全反射以进入另一个倾斜表面，然后 入射光的至少一部分应该在另一个倾斜表面上反射，并且在另一个倾斜表面上反射的反射光倾斜 表面不应该进入光源的发光部分和围绕发光部分的反射部分。
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4.发明授权Optical encoder having a no track portion of an optical scale being placed at a position symmetrical to a light non-transparent portion within an irradiation region of incident light 有权在光入射光的照射区域内具有光学刻度的无轨道部分的光学编码器被放置在与光不透明部分对称的位置公开(公告)号：US07538313B2
公开(公告)日：2009-05-26
申请号：US11854635
申请日：2007-09-13
IPC分类号： G01D5/34
CPC分类号： G01D5/36 , G01D5/34707
摘要： In an optical encoder comprising an optical scale in which a light transmission portion and a light non-transparent portion are arranged and an output pattern obtained by emitting an incident light functions as an optical code, a light source portion and a light detecting portion, the light non-transparent portion is constituted of at least one pair of inclined surfaces which are opposed in such a manner as to become farther away from each other towards the side where the incident light enters and set so that an incident angle of the optical axis of the incident light from the light source should not be smaller than a critical angle of incidence, and the light non-transparent portion is constructed so that the incident light which enters one inclined surface should be totally reflected thereon to enter the other inclined surface and then at least part of the incident light should be reflected on the other inclined surface, and a reflected light which is reflected on the other inclined surface should not enter a light emitting portion of the light source and a reflecting portion around the light emitting portion.
摘要翻译： 在包括其中布置有光透射部分和光不透明部分的光学标尺的光学编码器中，并且通过发射入射光获得的输出图案用作光学代码，光源部分和光检测部分， 光不透明部分由至少一对倾斜表面构成，所述至少一对倾斜表面以相对于彼此更远离入射光入射侧的方式相对的方式构成，使得入射光的入射角 来自光源的入射光不应小于临界入射角，并且光非透明部分被构造成使得入射到一个倾斜表面的入射光应该被全反射以进入另一个倾斜表面，然后 入射光的至少一部分应该在另一个倾斜表面上反射，并且在另一个倾斜表面上反射的反射光倾斜 表面不应该进入光源的发光部分和围绕发光部分的反射部分。
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公开(公告)号：US06972402B2
公开(公告)日：2005-12-06
申请号：US10448423
申请日：2003-05-30
申请人： Yoichi Ohmura , Toru Oka , Toshiro Nakashima , Hajime Nakajima , Hirokazu Sakuma , Takashi Okamuro , Masahiko Sakamoto , Koichi Sugimoto
发明人： Yoichi Ohmura , Toru Oka , Toshiro Nakashima , Hajime Nakajima , Hirokazu Sakuma , Takashi Okamuro , Masahiko Sakamoto , Koichi Sugimoto
IPC分类号： G01D5/34
CPC分类号： G01D5/342
摘要： A photoelectric rotary encoder includes a light source that emits a light beam, a returning section that returns the emitted light beam to a direction opposite to an emitting direction of the beam, and a photodetector that is disposed on a substrate on which the light source is disposed and that detects the returned light beam via a disk having a detection pattern section. The photoelectric rotary encoder detects rotational displacement of the disk based on the detected returned light beam. In this photoelectric rotary encoder, an optical element that lets a stray beam component of the light beam from the light source escape via a side surface of the optical element, is disposed in front of the substrate on which the light source and the photodetector are disposed. The optical element covers the substrate and integrates the optical element and the substrate.
摘要翻译： 光电旋转编码器包括发射光束的光源，将发射光束返回到与光束的发射方向相反的方向的返回部分;以及光电检测器，其设置在基板上，光源为 并且经由具有检测图案部分的盘检测返回的光束。 光电旋转编码器基于检测到的返回光束检测盘的旋转位移。 在该光电式旋转编码器中，将光源的光束成分从光源经由光学元件的侧面排出的光学元件设置在其上配置有光源和光电检测器的基板的前方 。 光学元件覆盖基板并且对光学元件和基板进行积分。
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公开(公告)号：US20070187581A1
公开(公告)日：2007-08-16
申请号：US10598450
申请日：2004-08-05
申请人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
发明人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
CPC分类号： G01D5/38
摘要： An optical encoder includes an incoherent light source; a first grating, which is an amplitude grating having a first grating period, for spatial amplitude modulation of the incoherent light from the light source; a second grating, which is a phase grating having a second grating period, for spatial phase modulation of light from the first grating; a third grating, which is an amplitude grating having a third grating period, for spatial amplitude modulation of light from the second grating; and a light detecting element for detecting lights from the third grating. The encoder detects relative displacement between the respective gratings. The optical transfer function from the light source to the light detecting element is enhanced, and the efficiency in utilizing light is improved.
摘要翻译： 光学编码器包括非相干光源; 第一光栅，其是具有第一光栅周期的幅度光栅，用于来自光源的非相干光的空间幅度调制; 第二光栅，其是具有第二光栅周期的相位光栅，用于来自第一光栅的光的空间相位调制; 第三光栅，其是具有第三光栅周期的幅度光栅，用于来自第二光栅的光的空间幅度调制; 以及用于检测来自第三光栅的光的光检测元件。 编码器检测各个光栅之间的相对位移。 提高了从光源到光检测元件的光传递函数，提高了利用光的效率。
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公开(公告)号：US07470892B2
公开(公告)日：2008-12-30
申请号：US10598450
申请日：2004-08-05
申请人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
发明人： Yoichi Ohmura , Toru Oka , Hajime Nakajima
IPC分类号： H01J3/14
CPC分类号： G01D5/38
摘要： An optical encoder includes an incoherent light source; a first grating, which is an amplitude grating having a first grating period, for spatial amplitude modulation of the incoherent light from the light source; a second grating, which is a phase grating having a second grating period, for spatial phase modulation of light from the first grating; a third grating, which is an amplitude grating having a third grating period, for spatial amplitude modulation of light from the second grating; and a light detecting element for detecting light from the third grating. The encoder detects relative displacement between the respective gratings. The optical transfer function from the light source to the light detecting element is enhanced, and the efficiency in utilizing light is improved.
摘要翻译： 光学编码器包括非相干光源; 第一光栅，其是具有第一光栅周期的幅度光栅，用于来自光源的非相干光的空间幅度调制; 第二光栅，其是具有第二光栅周期的相位光栅，用于来自第一光栅的光的空间相位调制; 第三光栅，其是具有第三光栅周期的幅度光栅，用于来自第二光栅的光的空间幅度调制; 以及用于检测来自第三光栅的光的光检测元件。 编码器检测各个光栅之间的相对位移。 提高了从光源到光检测元件的光传递函数，提高了利用光的效率。
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公开(公告)号：US06956200B2
公开(公告)日：2005-10-18
申请号：US10765861
申请日：2004-01-29
申请人： Yoichi Ohmura , Toru Oka , Hajime Nakajima , Hirokazu Sakuma , Takashi Okamuro
发明人： Yoichi Ohmura , Toru Oka , Hajime Nakajima , Hirokazu Sakuma , Takashi Okamuro
CPC分类号： H03M1/0678 , G01D5/347 , G01D5/34707 , G01D5/34715 , H03M1/301
摘要： A scale generates a periodic light-intensity distribution pattern having a pitch upon irradiation by emission light from a light source. Light-detecting element groups are shifted relative to the scale to generate phase signals having fixed phase differences. Light-detecting elements are adjacently positioned to have the same phase to form each light-detecting element group. Area centers of gravity on a phase axis of the light-detecting element groups having a fixed phase difference are made coincident with each other.
摘要翻译： 刻度产生在从光源发射的光照射时具有间距的周期性光强分布图案。 光检测元件组相对于刻度移位以产生具有固定相位差的相位信号。 光检测元件被相邻地定位成具有相同的相位以形成每个光检测元件组。 使具有固定相位差的光检测元件组的相位轴上的重心面重合。
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公开(公告)号：US08134359B2
公开(公告)日：2012-03-13
申请号：US12596729
申请日：2008-04-17
IPC分类号： G01B7/14
CPC分类号： G01D5/2451
摘要： The present invention provides a magnetic rotational-angle detector capable of detecting a position and a rotational angle of a rotating member with excellent accuracy. The magnetic rotational-angle detector includes device arrays (51, 52) constituted by a plurality of magnetic sensor devices which are arranged to cancel the n-th order harmonic components by each other. In the device arrays, the magnetic sensor devices corresponding to each other are arranged such that they are spaced apart with a distance of (2m+1)λ, and the arrangement of all the magnetic sensor devices and their orientations with respect to a power-supply terminal and a ground terminal are axisymmetrical about a straight line (2b) passing through a barycenric position (59) of all the magnetic sensor devices which is positioned on a straight line along a radial direction of a rotating drum (1).
摘要翻译： 本发明提供一种能够以高精度检测旋转部件的位置和旋转角度的磁旋转角度检测装置。 磁旋转角度检测器包括由多个磁传感器装置构成的装置阵列（51,52），其被布置为相互抵消n次谐波分量。 在器件阵列中，彼此对应的磁传感器装置被布置为使得它们以（2m + 1）λ的距离间隔开，并且所有磁传感器装置的布置及其相对于功率 - 供电端子和接地端子围绕通过沿着旋转鼓（1）的径向位于直线上的所有磁传感器装置的重心位置（59）的直线（2b）的轴对称。
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公开(公告)号：US20100052664A1
公开(公告)日：2010-03-04
申请号：US12596729
申请日：2008-04-17
IPC分类号： G01B7/30
CPC分类号： G01D5/2451
摘要： The present invention provides a magnetic rotational-angle detector capable of detecting a position and a rotational angle of a rotating member with excellent accuracy. The magnetic rotational-angle detector includes device arrays (51, 52) constituted by a plurality of magnetic sensor devices which are arranged to cancel the n-th order harmonic components by each other. In the device arrays, the magnetic sensor devices corresponding to each other are arranged such that they are spaced apart with a distance of (2m+1)λ, and the arrangement of all the magnetic sensor devices and their orientations with respect to a power-supply terminal and a ground terminal are axisymmetrical about a straight line (2b) passing through a barycenric position (59) of all the magnetic sensor devices which is positioned on a straight line along a radial direction of a rotating drum (1).
摘要翻译： 本发明提供一种能够以高精度检测旋转部件的位置和旋转角度的磁旋转角度检测装置。 磁旋转角度检测器包括由多个磁传感器装置构成的装置阵列（51,52），其被布置为相互抵消n次谐波分量。 在器件阵列中，彼此对应的磁传感器装置被布置为使得它们以（2m + 1）λ的距离间隔开，并且所有磁传感器装置的布置及其相对于功率 - 供电端子和接地端子围绕通过沿着旋转鼓（1）的径向位于直线上的所有磁传感器装置的重心位置（59）的直线（2b）的轴对称。
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