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1. 发明授权

US06956200B2 Phase-shift photoelectric encoder 有权
标题翻译：相移光电编码器
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
IPC分类号： G01D5/347 , H03M1/06 , H03M1/30 , G01D5/34
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。

2. 发明授权

US06972402B2 Photoelectric rotary encoder 有权
标题翻译：光电旋转编码器
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。

3. 发明授权

US06323786B1 Absolute-value encoder device 有权
标题翻译：绝对值编码器装置
公开(公告)号：US06323786B1
公开(公告)日：2001-11-27
申请号：US09695146
申请日：2000-10-25
申请人： Hirokazu Sakuma , Takashi Okamuro , Yoichi Ohmura , Yukio Aoki , Toshikazu Satone
发明人： Hirokazu Sakuma , Takashi Okamuro , Yoichi Ohmura , Yukio Aoki , Toshikazu Satone
IPC分类号： H03M130
CPC分类号： G01P3/486 , G01P3/489 , G01P13/045
摘要： An absolute-value encoder device for detecting a plurality of rotation quantities is disclosed. An A/B phase forming portion 610 forms an A-phase pulse signal and a B-phase pulse signal, based on light passing through a slit rotating together with a rotary shaft. One period of each of those pulse signals corresponds to one revolution of a rotary shaft. The A- and B-phase pulse signals are displaced in phase by 90° from each other. When an A/B-phase state detecting portion 640 detects a state change of each of those pulse signals, a clock forming portion 66 changes a frequency of a clock pulse signal to another frequency.
摘要翻译：公开了一种用于检测多个旋转量的绝对值编码器装置。基于通过与旋转轴一起旋转的狭缝的光，A / B相形成部分610形成A相脉冲信号和B相脉冲信号。这些脉冲信号中的每一个的一个周期对应于旋转轴的一转。 A相和B相脉冲信号彼此相位90°。当A / B相状态检测部分640检测到这些脉冲信号中的每一个的状态改变时，时钟形成部分66将时钟脉冲信号的频率改变为另一个频率。

4. 发明授权

US06232595B1 Position detecting apparatus 有权
标题翻译：位置检测装置
公开(公告)号：US06232595B1
公开(公告)日：2001-05-15
申请号：US09613312
申请日：2000-07-10
申请人： Takashi Okamuro , Hirokazu Sakuma , Yoichi Ohmura
发明人： Takashi Okamuro , Hirokazu Sakuma , Yoichi Ohmura
IPC分类号： G01D534
CPC分类号： G01D5/24476 , G01D5/24409 , G01D5/2448
摘要： In a position detecting apparatus which detects an absolute position by A/D converting sinusoidal and cosinusoidal signals and performing interpolation, a phase error between the signals which is caused by movement of a detection object during the A/D conversion is corrected, thereby enabling sample hold circuits which have been necessary for maintaining the synchronism of analog signals to be omitted, so as to realize the cost reduction and miniaturization. This is enabled also in an apparatus of high resolution. Position data at requests of the last and preceding times are stored into a RAM 12. On the basis of the position data, a CPU 10 predicts the amount of a phase shift of another signal due to movement during A/D conversion of one signal, corrects the predicted phase shift amount, and then calculates the position data.
摘要翻译：在通过A / D转换正弦和余弦信号来检测绝对位置并进行插值的位置检测装置中，校正在A / D转换期间由检测对象的移动引起的信号之间的相位误差，从而使样本保持模拟信号的同步性所必需的保持电路，从而实现成本的降低和小型化。这也可以在高分辨率的装置中实现。位置数据存储在RAM12中。根据位置数据，CPU10预测由于一个信号的A / D转换期间的移动导致的另一个信号的相移量，校正预测的相移量，然后计算位置数据。

5. 发明授权

US07589314B2 Optical encoder applying substantially parallel light beams and three periodic optical elements 失效
标题翻译：光学编码器施加基本平行的光束和三个周期性光学元件
公开(公告)号：US07589314B2
公开(公告)日：2009-09-15
申请号：US11571617
申请日：2005-06-17
申请人： Toru Oka , Yoichi Ohmura
发明人： Toru Oka , Yoichi Ohmura
IPC分类号： G01D5/34
CPC分类号： G01D5/38
摘要： An optical encoder for measuring a relative movement of a first scale plate and a second scale plate, comprises: a light source; a first scale plate which converts light from the light source into a cyclic light quantity distribution; a second scale plate which cyclically makes spatial modulation on the light beams from the first scale plate; a third scale plate having slits which allow the light beams from the second scale plate to pass therethrough; and a light-receiving element which receives the light beams from the third scale plate; a lens which converts light from the light source into substantially parallel light beams; and an optic array which converges or diffuses light beams in the direction of periodic change and generates a cyclic light quantity distribution on the first scale plate.
摘要翻译：一种用于测量第一标尺板和第二标尺板的相对运动的光学编码器，包括：光源; 将来自光源的光转换为循环光量分布的第一标尺板; 第二刻度板，循环地对来自第一刻度板的光束进行空间调制; 具有允许来自第二刻度板的光束通过的狭缝的第三刻度板; 以及受光元件，其接收来自所述第三刻度板的光束; 将来自光源的光转换成基本上平行的光束的透镜; 以及在周期性变化的方向上会聚或扩散光束的光学阵列，并且在第一刻度板上产生循环光量分布。

6. 发明授权

US07034282B2 Optical rotary encoder 有权
标题翻译：光学旋转编码器
公开(公告)号：US07034282B2
公开(公告)日：2006-04-25
申请号：US10819952
申请日：2004-04-08
申请人： Toru Oka , Yoichi Ohmura
发明人： Toru Oka , Yoichi Ohmura
IPC分类号： G01D5/34
CPC分类号： G01D5/342 , G01D5/34715
摘要： An optical rotary encoder for acquiring rotation information regarding a shaft includes a light source located on or in the vicinity of the axis of rotation of the shaft for emitting light rays and a code wheel mounted on the shaft for rotation about the axis of rotation. The code wheel has a plurality of alternating light transmissive and non-light transmissive areas in a circumferential direction. A reflector is spaced a distance from the code wheel for reflecting the light rays emitted from the light source so that they are turned into a parallel beam of light. The parallel beam of light illuminates the light transmissive areas of the code wheel so that light passing through the light transmissive areas is directed toward a peripheral region of the light source. The encoder also includes one or more light-detecting element for detecting the light passing through the light transmissive areas.
摘要翻译：用于获取关于轴的旋转信息的光学旋转编码器包括位于用于发射光线的轴的旋转轴线附近或附近的光源和安装在轴上以用于围绕旋转轴线旋转的编码轮。码盘在圆周方向上具有多个交替的透光区域和非透光区域。反射器与码轮间隔开一定距离，用于反射从光源发射的光线，使得它们变成平行光束。平行光束照射码盘的透光区域，使得穿过透光区域的光线朝向光源的周边区域。编码器还包括一个或多个用于检测穿过透光区域的光的光检测元件。

7. 发明授权

US07538313B2 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
标题翻译：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
申请人： Toru Oka , Yoichi Ohmura , Hajime Nakajima , Masahiko Sakamoto , Toshikazu Kitagaki
发明人： Toru Oka , Yoichi Ohmura , Hajime Nakajima , Masahiko Sakamoto , Toshikazu Kitagaki
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。

8. 发明申请

US20080048104A1 Optical Encoder 失效
标题翻译：光学编码器
公开(公告)号：US20080048104A1
公开(公告)日：2008-02-28
申请号：US11571617
申请日：2005-06-17
申请人： Toru Oka , Yoichi Ohmura
发明人： Toru Oka , Yoichi Ohmura
IPC分类号： G01D5/30 , G01D5/34
CPC分类号： G01D5/38
摘要： An optical encoder for measuring a relative movement of a first scale plate and a second scale plate, comprises: a light source; a first scale plate which converts light from the light source into a cyclic light quantity distribution; a second scale plate which cyclically makes spatial modulation on the light beams from the first scale plate; a third scale plate having slits which allow the light beams from the second scale plate to pass therethrough; and a light-receiving element which receives the light beams from the third scale plate; a lens which converts light from the light source into substantially parallel light beams; and an optic array which converges or diffuses light beams in the direction of periodic change and generates a cyclic light quantity distribution on the first scale plate.
摘要翻译：一种用于测量第一标尺板和第二标尺板的相对运动的光学编码器，包括：光源; 将来自光源的光转换为循环光量分布的第一标尺板; 第二刻度板，循环地对来自第一刻度板的光束进行空间调制; 具有允许来自第二刻度板的光束通过的狭缝的第三刻度板; 以及受光元件，其接收来自所述第三刻度板的光束; 将来自光源的光转换成基本上平行的光束的透镜; 以及在周期性变化的方向上会聚或扩散光束的光学阵列，并且在第一刻度板上产生循环光量分布。

9. 发明申请

US20080277569A1 OPTICAL ENCODER 有权
标题翻译：光学编码器
公开(公告)号：US20080277569A1
公开(公告)日：2008-11-13
申请号：US11854635
申请日：2007-09-13
申请人： Toru Oka , Yoichi Ohmura , Hajime Nakajima , Masahiko Sakamoto , Toshikazu Kitagaki
发明人： Toru Oka , Yoichi Ohmura , Hajime Nakajima , Masahiko Sakamoto , Toshikazu Kitagaki
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。

10. 发明申请

US20070272840A1 OPTICAL ROTARY ENCODER 有权
标题翻译：光学旋转编码器
公开(公告)号：US20070272840A1
公开(公告)日：2007-11-29
申请号：US10599142
申请日：2005-03-29
申请人： Takeshi Musha , Toru Oka , Yoichi Ohmura
发明人： Takeshi Musha , Toru Oka , Yoichi Ohmura
IPC分类号： G01D5/34
CPC分类号： G01D5/30 , G01D5/34715 , G01D5/3473
摘要： An optical encode includes: a rotary slit plate having a rotation angle detection track including an optical slit; a light source for applying light to the optical slit; light detecting elements for rotation angle detection and arranged at positions to which light emitted from the light source is applied to the optical slit, to detect the light emitted from the light source and passing through the optical slit; and light detecting elements for light amount monitoring arranged at locations on a circumference in corresponding relationship with positions to which light emitted from the light source is applied to the optical slit, to detect the light emitted from the light source and passing through the optical slit. The light detecting elements for light amount monitoring have an angular width that is an integer multiple of the angular interval of the light intensity distribution on surfaces of the light detecting elements for light amount monitoring.
摘要翻译：光学编码器包括：旋转狭缝板，具有包括光学狭缝的旋转角度检测轨迹; 用于向光学狭缝施加光的光源; 用于旋转角度检测的光检测元件，并且布置在从光源发射的光被施加到光学狭缝的位置处，以检测从光源发射并穿过光学狭缝的光; 以及光量监测用光检测元件，其配置在与从光源射出的光对应的位置对应的圆周上的位置处，以检测从光源发出的光并通过光学狭缝。用于光量监视的光检测元件的角度宽度是用于光量监视的光检测元件的表面上的光强度分布的角度间隔的整数倍。

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