公开(公告)号：US20110304482A1

公开(公告)日：2011-12-15

申请号：US12813438

申请日：2010-06-10

申请人： Daniel John Kapner ,  Michelle Mary Milvich

发明人： Daniel John Kapner ,  Michelle Mary Milvich

IPC分类号： H03M1/22

CPC分类号： G01D5/34784 ,  G01D5/24476 ,  G01D5/2448

摘要： An encoder configuration comprises a dual-modulation scale track pattern that provides a first intensity modulation component for producing periodic signals, and a second intensity modulation component for producing a long-range absolute signal. The dual-modulation scale track pattern increases the range-to-resolution ratio of the encoder without the use of additional scale tracks that would increase the width of the encoder components. The long-range signal may be encoded in the dual-modulation scale track pattern either by varying certain dimensions of pattern elements included in the scale track or by superimposing a layer including an optical density variation along on the track on pattern elements of similar areas. In either case, the net offset and/or amplitude levels of the associated signals are modified along the scale track. These modified offset and/or amplitude levels provide the basis for the long-range absolute signal.

摘要翻译： 编码器配置包括提供用于产生周期性信号的第一强度调制分量的双调制比例轨道图案，以及用于产生远程绝对信号的第二强度调制分量。 双调制刻度轨道图案增加了编码器的分辨率范围，而不需要增加编码器部件宽度的附加刻度轨迹。 长范围信号可以通过改变包括在刻度轨道中的图案元素的某些维度或者通过在相似区域的图案元素上沿轨道上叠加包含光密度变化的层来在双调制尺度轨道图案中编码。 在任一情况下，相关联信号的净偏移和/或幅度电平沿着标尺轨道被修改。 这些修改的偏移和/或幅度电平提供了远程绝对信号的基础。

公开(公告)号：US08493569B2

公开(公告)日：2013-07-23

申请号：US12979256

申请日：2010-12-27

申请人： Daniel John Kapner

发明人： Daniel John Kapner

IPC分类号： G01B11/02

CPC分类号： G01D5/34715 ,  G01D5/38

摘要： A device for measuring relative displacement between two members includes a scale grating and an optical encoder readhead comprising a first wavelength light source illuminating the grating. The grating outputs scale light to form a moving periodic intensity pattern at the first wavelength. The readhead comprises a plurality of spatial phase detectors comprising: a periodic spatial filter; a phosphor layer that receives light arising from the first wavelength periodic intensity pattern and outputs second wavelength light, and a photodetector element that receives, and is sensitive to, the second wavelength light. The photodetector element inputs second wavelength light corresponding to a spatially filtered version of the first wavelength periodic intensity pattern and outputs a signal indicative of its spatial phase relative to that spatial phase detector. The spatial filtering may be provided by a mask element, or by a pattern of the phosphor layer and/or the detector element, in various embodiments.

摘要翻译： 用于测量两个构件之间的相对位移的装置包括刻度光栅和光学编码器读取头，其包括照亮光栅的第一波长光源。 光栅输出缩放光以在第一波长处形成移动的周期性强度图案。 所述读取头包括多个空间相位检测器，包括：周期性空间滤波器; 接收从第一波长周期强度图案出射的光并输出第二波长光的荧光体层，以及接收并对第二波长光敏感的光电检测元件。 光检测器元件输入对应于第一波长周期强度图案的空间滤波版本的第二波长光，并输出指示其空间相位相对于该空间相位检测器的信号。 在各种实施例中，空间滤波可以由掩模元件提供，或者由荧光体层和/或检测器元件的图案提供。

公开(公告)号：US08309906B2

公开(公告)日：2012-11-13

申请号：US12813438

申请日：2010-06-10

申请人： Daniel John Kapner ,  Michelle Mary Milvich

发明人： Daniel John Kapner ,  Michelle Mary Milvich

IPC分类号： G01D5/34 ,  G01B11/14

CPC分类号： G01D5/34784 ,  G01D5/24476 ,  G01D5/2448

摘要： An encoder configuration comprises a dual-modulation scale track pattern that provides a first intensity modulation component for producing periodic signals, and a second intensity modulation component for producing a long-range absolute signal. The dual-modulation scale track pattern increases the range-to-resolution ratio of the encoder without the use of additional scale tracks that would increase the width of the encoder components. The long-range signal may be encoded in the dual-modulation scale track pattern either by varying certain dimensions of pattern elements included in the scale track or by superimposing a layer including an optical density variation along on the track on pattern elements of similar areas. In either case, the net offset and/or amplitude levels of the associated signals are modified along the scale track. These modified offset and/or amplitude levels provide the basis for the long-range absolute signal.

摘要翻译： 编码器配置包括提供用于产生周期性信号的第一强度调制分量的双调制比例轨道图案，以及用于产生远程绝对信号的第二强度调制分量。 双调制刻度轨道图案增加了编码器的分辨率范围，而不需要增加编码器部件宽度的附加刻度轨迹。 长范围信号可以通过改变包括在刻度轨道中的图案元素的某些维度或者通过在相似区域的图案元素上沿轨道上叠加包含光密度变化的层来在双调制尺度轨道图案中编码。 在任一情况下，相关联信号的净偏移和/或幅度电平沿着标尺轨道被修改。 这些修改的偏移和/或幅度电平提供了远程绝对信号的基础。

公开(公告)号：US20120162663A1

公开(公告)日：2012-06-28

申请号：US12979256

申请日：2010-12-27

申请人： Daniel John Kapner

发明人： Daniel John Kapner

IPC分类号： G01B11/14

CPC分类号： G01D5/34715 ,  G01D5/38

摘要： A device for measuring relative displacement between two members includes a scale grating and an optical encoder readhead comprising a first wavelength light source illuminating the grating. The grating outputs scale light to form a moving periodic intensity pattern at the first wavelength. The readhead comprises a plurality of spatial phase detectors comprising: a periodic spatial filter; a phosphor layer that receives light arising from the first wavelength periodic intensity pattern and outputs second wavelength light, and a photodetector element that receives, and is sensitive to, the second wavelength light. The photodetector element inputs second wavelength light corresponding to a spatially filtered version of the first wavelength periodic intensity pattern and outputs a signal indicative of its spatial phase relative to that spatial phase detector. The spatial filtering may be provided by a mask element, or by a pattern of the phosphor layer and/or the detector element, in various embodiments.

摘要翻译： 用于测量两个构件之间的相对位移的装置包括刻度光栅和光学编码器读取头，其包括照亮光栅的第一波长光源。 光栅输出缩放光以在第一波长处形成移动的周期性强度图案。 所述读取头包括多个空间相位检测器，包括：周期性空间滤波器; 接收从第一波长周期强度图案出射的光并输出第二波长光的荧光体层，以及接收并对第二波长光敏感的光电检测元件。 光电检测器元件输入对应于第一波长周期强度图案的空间滤波版本的第二波长光，并输出指示其空间相位相对于该空间相位检测器的信号。 在各种实施例中，空间滤波可以由掩模元件提供，或者由荧光体层和/或检测器元件的图案提供。