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1. 发明专利

JP2004271271A Projection type rotary encoder 有权
公开(公告)号：JP2004271271A
公开(公告)日：2004-09-30
申请号：JP2003059983
申请日：2003-03-06
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： MITAMURA MUNEO , ITO YOSHINORI , KANAMORI SADAJI
IPC分类号： G01D5/347 , H03M1/30 , G01D5/34
CPC分类号： H03M1/301 , G01D5/34715
摘要： PROBLEM TO BE SOLVED: To determine the shape of each lattice so as to prevent output deterioration in detected signals and deterioration in an S/N ratio on a projection type rotary encoder.
SOLUTION: This projection type rotary encoder comprises a light source, an object lattice plate with substantially sectoral object lattices for light transmission arranged thereon circumferentially at certain angular intervals, a rotary scale plate with substantially sectoral scale lattices arranged thereon circumferentially at certain angular intervals, and a photodiode lattice plate with substantially sectoral photodiode light-receiving lattices arranged thereon circumferentially at certain angular intervals. On the scale plate, a scale lattice 32A is formed having a shape and size corresponding to an optical image of an object lattice 31A, the image being radiated to a surface thereof. On the photodiode lattice plate, a photodiode light-receiving face lattice 33A is formed having a shape and size corresponding to an optical image of the scale lattice 32A, the image being radiated to the surface thereof.
COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2004095660A Light receiving element and encoder 审中-公开
公开(公告)号：JP2004095660A
公开(公告)日：2004-03-25
申请号：JP2002251505
申请日：2002-08-29
申请人： Harmonic Drive Syst Ind Co Ltd , Nikon Corp , 株式会社ニコン , 株式会社ハーモニック・ドライブ・システムズ
发明人： ITO YOSHINORI , YAGI TAKESHI
IPC分类号： G01D5/36 , H01L31/16
摘要： PROBLEM TO BE SOLVED: To provide a light receiving element which can be increased both in an optical performance and a structural strength although a transmission grating and a light receiving grating are integrated, and to provide an encoder which can have high performance. SOLUTION: A light receiving grating part (GD) formed of a semiconductor layer where light receiving regions (ED) sending light in a specified wavelength range are arranged in a lattice shape and a transmission grating part (G) where transmission regions (EV) transmitting the light in the specified wavelength range are arranged in a lattice shape are provided on a transparent substrate (11) which is transparent to the light in the specified wavelength range. Since the transparent substrate (11) is provided, the structural strength of the semiconductor layer is high even if an opening (10a) is provided as a transmission region in the semiconductor layer. Further, even if the optical performance of the transmission grating part is increased by making the semiconductor layer thin enough, the structural strength is maintained. An encoder using the light receiving element (10) has higher performance. COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2003042805A Magnetic induction type rotary position detector 审中-公开
标题翻译：磁感应式旋转位置检测器
公开(公告)号：JP2003042805A
公开(公告)日：2003-02-13
申请号：JP2001233196
申请日：2001-08-01
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： ITO YOSHINORI , SAWAMURA YASUO , ABE TOSHIYUKI
IPC分类号： G01B7/00 , G01B7/30 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To provide a magnetic induction type rotary position detector capable of reducing the detection error caused by the leak of magnetic flux to perform high accurate detection.
SOLUTION: In the magnetic induction type rotary position detector 10, secondary side induction coils 17As-17Hs and primary side exciting coils 18A-18H are arranged to a stator 11. Compensation coils 19As-19Hs are arranged at the positions corresponding to the secondary side induction coils 17As-17Hs of a sine phase and these secondary side induction coils and the compensation coils are connected in series. The secondary side induction coils and the compensation coils are connected in series even on the side of a cosine phase in the same way. By appropriately setting the winding direction and winding number of the compensation coils, the error component caused by the leaked magnetic flux or the like contained in the detection signals obtained from the secondary side induction coils of respective phases can be reduced and, by this constitution, the absolute accuracy of the magnetic induction type rotary position detector 10 is improved.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够降低由磁通量泄漏引起的检测误差的磁感应式旋转位置检测器，以进行高精度检测。解决方案：在磁感应式旋转位置检测器10中，次级侧感应线圈17A-17Hs和初级侧激励线圈18A-18H布置在定子11上。补偿线圈19As-19Hs被布置在与次级侧感应正弦相的线圈17As-17Hs和这些次级侧感应线圈和补偿线圈串联连接。次级侧感应线圈和补偿线圈即使在余弦相侧也以相同的方式串联连接。通过适当地设定补偿线圈的卷绕方向和卷绕数，可以减少由从各相的次级侧感应线圈获得的检测信号中包含的泄漏磁通等引起的误差成分，通过该结构，磁感应式旋转位置检测器10的绝对精度提高。

4. 发明专利

JP2005164515A Projection type encoder 有权
标题翻译：投影类型编码器
公开(公告)号：JP2005164515A
公开(公告)日：2005-06-23
申请号：JP2003406869
申请日：2003-12-05
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： MITAMURA MUNEO , ITO YOSHINORI
IPC分类号： G01D5/347 , G01D5/34
摘要： PROBLEM TO BE SOLVED: To provide a projection type encoder by a three-grating theory capable of heightening each signal level of A, B, Z-phases.
SOLUTION: This projection type linear encoder 1 is equipped with a diffuser 5 for guiding emitted light from a point light source 2 to an AB-phase penetration grating 9 as diffused light, and light passing the diffuser 5 and the AB-phase penetration grating 9 of a semiconductor substrate 4 and reflected by an AB-phase reflecting grating 11 of a scale plate 3 is received by an AB-phase photodiode 7 of the semiconductor substrate 4. Light toward a Z-phase transmission window 10 of the semiconductor substrate 4 from the point light source 2 bypasses the diffuser 5, passes the window 10 directly, and is reflected by a Z-phase reflecting grating 12 of the scale plate 3, and received by a Z-phase light receiving element 8 of the semiconductor substrate 4. Hereby, light suitable for each of the AB-phase and the Z-phase can be irradiated, and the signal level thereof can be heightened.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过能够提高A，B，Z相的每个信号电平的三光栅理论来提供投影型编码器。
解决方案：该投影型线性编码器1配备有用于将来自点光源2的发射光作为漫射光引导到AB相穿透光栅9的扩散器5，并且通过扩散器5和AB相的光由半导体衬底4的AB相位光电二极管7接收半导体衬底4的穿透光栅9并由刻度板3的AB相位反射光栅11反射的光。朝向半导体衬底4的Z相透射窗10的光来自点光源2的基板4绕过漫射器5，直接通过窗口10，并被刻度盘3的Z相反射光栅12反射，并被半导体的Z相光接收元件8接收因此，可以照射适合于AB相和Z相中的每一个的光，并且可以提高其信号水平。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004333156A Encoder signal interpolation divider 审中-公开
公开(公告)号：JP2004333156A
公开(公告)日：2004-11-25
申请号：JP2003125338
申请日：2003-04-30
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： ITO YOSHINORI , KANAMORI SADAJI , MITAMURA MUNEO
IPC分类号： G01D5/245 , G01D5/244
CPC分类号： G01D5/24452 , G01D5/24409 , G01D5/2448 , G01D5/2449
摘要： PROBLEM TO BE SOLVED: To provide an encoder signal interpolation divider capable of generating encoder signals provided with prescribed resolution by interpolation division with favorable precision by automatically and quickly correcting offset and gain of input signals in low-cost circuit constitution.
SOLUTION: In this encoder signal interpolation divider 1, offset correction is conducted to input signals A1 and B1 as analogue signals at adders 4 and 5 by a zero-point correcting circuit 13, and gain correction is conducted at amplifiers 6 and 7 by an amplitude correcting circuit 14 before they are converted to be digitized by A/D converters 8 and 9. The analog signals are converted into digital values after correction, and angle data are determined in an angle data lookup table 10. Based on these, encoder pulse signals provided with prescribed resolution are generated from an encoder pulse signal generating circuit 12 to be outputted.
COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2004028862A Projection encoder 审中-公开
公开(公告)号：JP2004028862A
公开(公告)日：2004-01-29
申请号：JP2002187464
申请日：2002-06-27
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： ITO YOSHINORI , KANAMORI SADAJI , MITAMURA MUNEO
IPC分类号： G01D5/36 , G01D5/38
CPC分类号： G01D5/38
摘要： PROBLEM TO BE SOLVED: To obtain high-accuracy encoded signals from a projection encoder based on the triple grating theory by improving the S/N ratio etc., of detect signals.
SOLUTION: The projection linear encoder 1 has a moving plate 5 composed of a silicon substrate on which a light transmitting grating 3 and grating-like photodiodes 4A and 4B are formed and a reflecting grating plate 7 on which a reflecting grating 6 is formed to face the moving plate 5. The reflecting grating plate 7 is constituted by forming the reflecting grating 6 on the surface of a transparent substrate 71 and reflection preventive films 72 and 73 are formed on the front and rear surfaces 711 and 712 of the substrate 71 respectively . The S/N ratio etc., of detect signals can be improved by preventing or suppressing the reflection of unnecessary light components by means of the reflecting grating plate 7.
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2003004488A Optical encoder 有权
标题翻译：光学编码器
公开(公告)号：JP2003004488A
公开(公告)日：2003-01-08
申请号：JP2001186490
申请日：2001-06-20
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： ITO YOSHINORI , YAGIO TOSHITAKA
IPC分类号： G01D5/36
摘要： PROBLEM TO BE SOLVED: To implement an optical encoder by a three-lattice theory, capable of detecting the location of an origin.
SOLUTION: The optical linear encoder 1 is provided with a moving lattice plate 5 formed of a semiconductor substrate. Light-transmitting lattices 3 for detecting A-phase and B-phase signals and lattice-shaped photodiodes 4A and 4B are formed in the moving lattice plate 5, and one photodiode 4C for detecting the location of the origin is formed between the light-transmitting lattices 3. Reflection lattice groups 6A and 6B for detecting A-phase and B-phase signals and a reflection lattice 6C for detecting the location of the origin are formed in a reflecting lattice plate 7. On the basis of the detected signals of the photodiode 4C, it is possible to detect the location of the origin of the moving lattice plate 5, and based on this, it is possible to detect the location of movement of the moving lattice plate.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：通过三格理论实现光学编码器，能够检测原点的位置。解决方案：光学线性编码器1设置有由半导体衬底形成的移动格子板5。用于检测A相和B相信号的光发射晶格3和格状光电二极管4A和4B形成在移动格栅板5中，并且用于检测原点位置的一个光电二极管4C形成在透光晶格3.用于检测A相和B相信号的反射晶格组6A和6B以及用于检测原点的位置的反射晶格6C形成在反射格子板7中。基于检测到的光电二极管的信号如图4C所示，可以检测移动格子板5的原点的位置，并且基于此，可以检测移动格子板的移动位置。

8. 发明专利

JP2003322549A Projection type encoder and light emitting diode lamp 审中-公开
标题翻译：投影类型编码器和发光二极管灯
公开(公告)号：JP2003322549A
公开(公告)日：2003-11-14
申请号：JP2003049122
申请日：2003-02-26
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： ITO YOSHINORI , MITAMURA MUNEO
IPC分类号： G01D5/347 , G01D5/34 , H01L31/12
摘要： PROBLEM TO BE SOLVED: To provide a projection type encoder by the theory of three gratings, having a high utilization efficiency of the emitting light from an LED lamp being a light source. SOLUTION: A transmission grating group 3 is formed at a constant pitch in a central part opposed to the LED lamp 2 on a moving grating plate 6 of a projection type linear encoder 1, and a photodiode group 4 is arranged in the same direction above and below this group. A lens surface of an LED lens 23 is formed of vertically arranged two convex lens surfaces 233 and 234, and the respective convex lens surfaces 233 and 234 are formed laterally long in the arranging direction of the photodiode group 4, and lens surface curvature of the direction is set smaller than lens surface curvature in the orthogonal direction. A side surface part 232 of the LED lens is determined at an inclination capable of totally reflecting the divergent light. The LED lamp 2 having this LED lens 23 can efficiently emit the divergent light forward as the emitting light, and the emitting light reflected by a reflecting grating 6 forms a laterally long maximum light quantity distribution area in a position of the upper and lower photodiode groups 4. Thus, a light receiving quantity can be increased by the photodiode groups 4 so that highly accurate detection can be performed. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过三个光栅的理论提供投影型编码器，其具有来自作为光源的LED灯的发光的高利用率。
解决方案：在投影型线性编码器1的移动光栅板6上的与LED灯2相对的中心部分中以恒定的间距形成透射光栅组3，并且光电二极管组4布置在其中方向上下方向。 LED透镜23的透镜表面由垂直布置的两个凸透镜表面233和234形成，并且各个凸透镜表面233和234在光电二极管组4的排列方向上横向形成，并且透镜表面曲率方向设定为小于正交方向的透镜面曲率。以能够完全反射发散光的倾斜度来确定LED透镜的侧表面部分232。具有该LED透镜23的LED灯2可以有效地发射发散光作为发光，并且由反射光栅6反射的发射光在上和下光电二极管组的位置形成横向长的最大光量分布区域因此，可以通过光电二极管组4增加光接收量，从而可以进行高精度的检测。版权所有（C）2004，JPO

9. 发明专利

JP2005207748A Magnetic induction type rotational position sensor 审中-公开
标题翻译：磁感应型旋转位置传感器
公开(公告)号：JP2005207748A
公开(公告)日：2005-08-04
申请号：JP2004011478
申请日：2004-01-20
申请人： Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ
发明人： SAWAMURA YASUO , ITO YOSHINORI , ABE TOSHIYUKI
IPC分类号： G01D5/245
摘要： PROBLEM TO BE SOLVED: To provide a magnetic induction type rotational position sensor capable of obtaining a sine wave output by simple constitution.
SOLUTION: This sensor has a stator 101 arranged concentrically with a plurality of magnetic pole pins 2, a rotor 105 arranged opposedly under a coaxial condition to the stator 101, a primary side excitation coil 104 arranged in the stator 101, and a secondary side induction coil 103 arranged in the each magnetic pole pin 2. A cross-sectional shape of the each magnetic pole pin 2 is formed into a sector shape around the rotation center 105a of the rotor 105 as the center to change sine-wave-likely an overlap area S of a magnetic substance 106 in the rotor 105 and the each magnetic pole pin 2, in response to a rotation angle position of the rotor 105, and a sine-wave-like irregular patterns are formed in an inner circumferential edge of the magnetic substance in the rotor 105. The sine-wave-like output is obtained from the secondary side induction coil 103, because the overlap area S is changed sine-wave-likely.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供能够通过简单的结构获得正弦波输出的磁感应式旋转位置传感器。解决方案：该传感器具有与多个磁极销2同轴地配置的定子101，在同轴状态下与定子101相对配置的转子105，布置在定子101中的初级侧励磁线圈104和设置在每个磁极销2中的次级侧感应线圈103.每个磁极销2的横截面形状围绕作为中心的转子105的旋转中心105a形成为扇形，以改变正弦波 - 可能根据转子105的旋转角度位置，转子105和各个磁极销2中的磁性物质106的重叠区域S形成在内周边缘中的正弦波状的不规则图案由于重叠区域S正弦波可能发生变化，所以从次级侧感应线圈103获得正弦波状的输出。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2004333342A Projection encoder 审中-公开
标题翻译：投影编码器
公开(公告)号：JP2004333342A
公开(公告)日：2004-11-25
申请号：JP2003130927
申请日：2003-05-09
申请人： Kazuhiro Hane , Harmonic Drive Syst Ind Co Ltd , 株式会社ハーモニック・ドライブ・システムズ , 一博羽根
发明人： MITAMURA MUNEO , HANE KAZUHIRO , ITO YOSHINORI
IPC分类号： G01D5/347 , G01D5/34 , H01J3/14 , H01L31/167
CPC分类号： G01D5/34707
摘要： PROBLEM TO BE SOLVED: To provide a projection encoder based on a three-lattice theory equipped with an inexpensively-manufacturable transmission lattice having high mechanical strength.
SOLUTION: This projection linear encoder 1 has an SOQ substrate 5 where the transmission lattice 3 and a lattice-shaped photodiode group 4 are formed, and a reflecting lattice board 7 where a facing reflecting lattice 6 is formed. A shielding film 3a comprising a metal thin plate or the like is formed on the surface of a glass substrate 9 on the SOQ substrate 5, and the transmission lattice 3 is formed by patterning the film. The photodiodes 4 are formed by an epitaxial growth method in a silicon layer 9 on the SOQ substrate 5. Hereby, the transmission lattice 3 having high mechanical strength can be manufactured more inexpensively than the case wherein the transmission lattice is manufactured by forming a through hole into a silicon substrate by etching.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种基于具有高机械强度的廉价制造的传输格子的三格理论的投影编码器。解决方案：该投影线性编码器1具有形成透射格子3和格子状光电二极管组4的SOQ基板5和形成有相对的反射格子6的反射格子板7。在SOQ基板5上的玻璃基板9的表面上形成有包含金属薄板等的屏蔽膜3a，通过对膜进行构图来形成透射格子3。光电二极管4通过外延生长方法形成在SOQ基板5上的硅层9中。因此，与通过形成通孔制造透射格子的情况相比，可以更廉价地制造具有高机械强度的透射格子3 通过蚀刻进入硅衬底。版权所有（C）2005，JPO＆NCIPI

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