公开(公告)号：US07348544B2

公开(公告)日：2008-03-25

申请号：US11152412

申请日：2005-06-14

申请人： Akio Atsuta ,  Masahiko Igaki

发明人： Akio Atsuta ,  Masahiko Igaki

IPC分类号： G01D5/34

CPC分类号： G01D5/366

摘要： An optical encoder includes a light-emitting unit, a scale with a discontinuous part, and a plurality of light-receiving elements arranged in relationship to a pitch of the scale. In the optical encoder, a light beam from the light-emitting unit reflects off the scale, and is received at the light-receiving elements. As a result of the processing of signals from the light-receiving elements, the discontinuous part is detected and the origin detection can be achieved.

摘要翻译： 光学编码器包括发光单元，具有不连续部分的刻度以及与刻度的间距相关地布置的多个光接收元件。 在光学编码器中，来自发光单元的光束反射离开标尺，并被接收在光接收元件处。 作为来自光接收元件的信号的处理的结果，检测不连续部分并且可以实现原点检测。

公开(公告)号：US07332708B2

公开(公告)日：2008-02-19

申请号：US11696075

申请日：2007-04-03

申请人： Akio Atsuta ,  Masahiko Igaki

发明人： Akio Atsuta ,  Masahiko Igaki

IPC分类号： G01D5/34

CPC分类号： G01D5/34715

摘要： In an optical encoder, a plurality of light sources is controlled on and off so as to use light rays to irradiate an optical grating of a scale from a plurality of different directions. The light rays are received by a plurality of photoreceptor elements. Operations are performed using signals output from the photoreceptor elements. Accordingly, the relative position between the photoreceptor elements and the scale is detected precisely.

摘要翻译： 在光学编码器中，多个光源被控制开和关，以便使用光线从多个不同方向照射刻度的光栅。 光线被多个感光元件接收。 使用从感光体元件输出的信号进行操作。 因此，精确地检测感光元件与刻度之间的相对位置。

公开(公告)号：US07184914B2

公开(公告)日：2007-02-27

申请号：US11457355

申请日：2006-07-13

申请人： Akio Atsuta ,  Masahiko Igaki

发明人： Akio Atsuta ,  Masahiko Igaki

IPC分类号： G01B7/14 ,  G01R31/00

CPC分类号： G01D5/24409

摘要： A sensor signal processor includes a scale having optically or magnetically fine divisions; a detection sensor that moves with respect to the scale and that is provided in association with the divisions of the scale; and a position detecting unit for calculating positional information by using a counter value of digital pulse signals generated from the outputs from the detection sensor and analog signals generated from the outputs from the detection sensor. The sensor signal processor yields the positional information by using both the digital pulse signals and the analog signals.

摘要翻译： 传感器信号处理器包括具有光学或磁性细分的刻度; 检测传感器，其相对于刻度尺移动并且与刻度尺的划分相关联地设置; 以及位置检测单元，用于通过使用从检测传感器的输出产生的数字脉冲信号的计数器值和从检测传感器的输出产生的模拟信号来计算位置信息。 传感器信号处理器通过使用数字脉冲信号和模拟信号来产生位置信息。

公开(公告)号：US20060118709A1

公开(公告)日：2006-06-08

申请号：US11335983

申请日：2006-01-20

申请人： Masahiko Igaki ,  Akio Atsuta

发明人： Masahiko Igaki ,  Akio Atsuta

IPC分类号： G01D5/34

CPC分类号： G01D5/34738

摘要： A rotation information record surface of a rotary disk is disposed at an intermediate position between a fixing point of the rotary disk and a rotary shaft and a fixing position of a detection head, so that a stable gap can be obtained with a variation due to thermal expansion being reduced. In order to attain this, the fitting portion of the rotary disk is shaped to have a first fitting portion and a second fitting portion. The first fitting portion is provided for attaining satisfactory coaxiality, and the second fitting portion is adapted to form a clearance into which bonding means such as an adhesive is to be infused. With the above structure, an optimum detection position (i.e. an optimum gap position) would not be varied by a change in the ambient temperature.

摘要翻译： 旋转盘的旋转信息记录表面设置在旋转盘的固定点和旋转轴之间的中间位置以及检测头的固定位置，从而可以获得由于热量变化而产生的稳定的间隙 扩张减少。 为了达到这个目的，旋转盘的装配部分成形为具有第一装配部分和第二装配部分。 第一装配部分用于获得令人满意的同轴度，并且第二装配部分适于形成一个间隙，粘合装置例如粘合剂将被输入到该间隙中。 利用上述结构，通过环境温度的变化不会改变最佳检测位置（即最佳间隙位置）。

公开(公告)号：US20050274880A1

公开(公告)日：2005-12-15

申请号：US11152412

申请日：2005-06-14

申请人： Akio Atsuta ,  Masahiko Igaki

发明人： Akio Atsuta ,  Masahiko Igaki

IPC分类号： G01D5/36 ,  H01J3/14

CPC分类号： G01D5/366

摘要： An optical encoder includes a light-emitting unit, a scale with a discontinuous part, and a plurality of light-receiving elements arranged in relationship to a pitch of the scale. In the optical encoder, a light beam from the light-emitting unit reflects off the scale, and is received at the light-receiving elements. As a result of the processing of signals from the light-receiving elements, the discontinuous part is detected and the origin detection can be achieved.

摘要翻译： 光学编码器包括发光单元，具有不连续部分的刻度以及与刻度的间距相关地布置的多个光接收元件。 在光学编码器中，来自发光单元的光束反射离开标尺，并被接收在光接收元件处。 作为来自光接收元件的信号的处理的结果，检测不连续部分并且可以实现原点检测。

公开(公告)号：US07622698B2

公开(公告)日：2009-11-24

申请号：US11774154

申请日：2007-07-06

申请人： Masahiko Igaki ,  Akio Atsuta

发明人： Masahiko Igaki ,  Akio Atsuta

IPC分类号： G01B11/14

CPC分类号： G01D5/34 ,  H01L25/167 ,  H01L33/60 ,  H01L2224/48465 ,  H01L2924/3025 ,  H01L2224/48091 ,  H01L2924/00014 ,  H01L2924/00

摘要： A reflective sensor is disclosed which prevents divergent light from a light source from being totally reflected by an interface between the package and the outside thereof and entering a light-receiving element without using a light-shield means and which allows an improved S/N ratio and reduced variations in performance. The reflective sensor includes a light-emitting element and a light-receiving element which are provided on a surface, and a light-transmissive member which covers the light-emitting element and the light-receiving element. The light-receiving element includes a light-receiving region which is spaced from the light-emitting element along the surface, and which light-receiving region is closer to the light-emitting element than an area on the surface that would be illuminated by unimpeded light rays which are totally reflected by an interface between the light-transmissive member and the outside thereof and are directed toward the light-receiving element.

摘要翻译： 公开了一种反射传感器，其防止来自光源的发散光被封装和其外部之间的界面完全反射并进入光接收元件而不使用遮光装置，并且允许改善的S / N比 并降低性能的变化。 反射传感器包括设置在表面上的发光元件和受光元件，以及覆盖发光元件和受光元件的透光构件。 光接收元件包括与发光元件沿着表面间隔开的光接收区域，并且光接收区域比不受阻碍地照射的表面上的区域更靠近发光元件 由透光构件和其外部之间的界面全反射并且被引导到光接收元件的光线。

公开(公告)号：US07385179B2

公开(公告)日：2008-06-10

申请号：US11467697

申请日：2006-08-28

申请人： Masahiko Igaki ,  Akio Atsuta

发明人： Masahiko Igaki ,  Akio Atsuta

IPC分类号： G01D5/34

CPC分类号： G01D5/38

摘要： At least one exemplary embodiment is directed to an optical encoder which includes a first diffraction grating having a desired optical effective aperture ratio at an appropriate gap position so as to eliminate and/or reduce high-harmonic components from the light intensity distribution of interference fringes and reduce high-order spatial frequency components overlapped on a displacement signal of the interference fringes formed by the first diffraction grating.

摘要翻译： 至少一个示例性实施例涉及一种光学编码器，其包括在适当的间隙位置处具有期望的光学有效开口率的第一衍射光栅，以便从干涉条纹的光强度分布中消除和/或减少高次谐波分量， 减少重叠在由第一衍射光栅形成的干涉条纹的位移信号上的高阶空间频率分量。

公开(公告)号：US07358865B2

公开(公告)日：2008-04-15

申请号：US11467690

申请日：2006-08-28

申请人： Masahiko Igaki ,  Akio Atsuta

发明人： Masahiko Igaki ,  Akio Atsuta

IPC分类号： H03M1/22

CPC分类号： G01D5/34715 ,  G01D5/38

摘要： An optical encoder includes a cylindrical reflective scale, a point light source for irradiating the reflective scale, and light-receiving elements for receiving the light beams reflected by the reflective scale. The pitch of the reflective scale is set to an appropriate value such that the pitch of interference fringes formed by light beams that are reflected by the reflective scale is matched to the pitch of the light-receiving elements at a position with a desired gap.

摘要翻译： 光学编码器包括圆柱形反射标尺，用于照射反射标尺的点光源和用于接收由反射标尺反射的光束的光接收元件。 反射刻度的间距被设定为适当的值，使得由反射标尺反射的光束形成的干涉条纹的间距与具有期望间隙的位置处的光接收元件的间距相匹配。

公开(公告)号：US20070102630A1

公开(公告)日：2007-05-10

申请号：US11467697

申请日：2006-08-28

申请人： Masahiko Igaki ,  Akio Atsuta

发明人： Masahiko Igaki ,  Akio Atsuta

IPC分类号： G01D5/34

CPC分类号： G01D5/38

摘要： At least one exemplary embodiment is directed to an optical encoder which includes a first diffraction grating having a desired optical effective aperture ratio at an appropriate gap position so as to eliminate and/or reduce high-harmonic components from the light intensity distribution of interference fringes and reduce high-order spatial frequency components overlapped on a displacement signal of the interference fringes formed by the first diffraction grating.

摘要翻译： 至少一个示例性实施例涉及一种光学编码器，其包括在适当的间隙位置处具有期望的光学有效开口率的第一衍射光栅，以便从干涉条纹的光强度分布中消除和/或减少高次谐波分量， 减少重叠在由第一衍射光栅形成的干涉条纹的位移信号上的高阶空间频率分量。

公开(公告)号：US20070047050A1

公开(公告)日：2007-03-01

申请号：US11467690

申请日：2006-08-28

申请人： Masahiko Igaki ,  Akio Atsuta

发明人： Masahiko Igaki ,  Akio Atsuta

IPC分类号： G02B26/08

CPC分类号： G01D5/34715 ,  G01D5/38

摘要： An optical encoder includes a cylindrical reflective scale, a point light source for irradiating the reflective scale, and light-receiving elements for receiving the light beams reflected by the reflective scale. The pitch of the reflective scale is set to an appropriate value such that the pitch of interference fringes formed by light beams that are reflected by the reflective scale is matched to the pitch of the light-receiving elements at a position with a desired gap.

摘要翻译： 光学编码器包括圆柱形反射标尺，用于照射反射标尺的点光源和用于接收由反射标尺反射的光束的光接收元件。 反射刻度的间距被设定为适当的值，使得由反射标尺反射的光束形成的干涉条纹的间距与具有期望间隙的位置处的光接收元件的间距相匹配。