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公开(公告)号:US07449677B2
公开(公告)日:2008-11-11
申请号:US11757826
申请日:2007-06-04
申请人: Kean Foong Ng , Sze Kuang Lee , Hock Aun Tan , Weng Fei Wong , Wee Jin Yeap , Chee Foo Lum , Kok Hing Fo , Toshiya Hataguchi , Randeep Singh A/L Amarjit
发明人: Kean Foong Ng , Sze Kuang Lee , Hock Aun Tan , Weng Fei Wong , Wee Jin Yeap , Chee Foo Lum , Kok Hing Fo , Toshiya Hataguchi , Randeep Singh A/L Amarjit
IPC分类号: G01D5/34
CPC分类号: G01D5/34746 , G01D5/347 , G01D5/34707
摘要: An optical encoder includes a code strip having a first side, a second side, a first track comprising indicia thereon, and a second track comprising indicia thereon. The code strip is moveable along a displacement path with respect to the optical encoder. A light source positioned on the first side of the code strip directs light toward the code strip. A first detector element is positioned on the second side of the code strip and is generally aligned with the first track of the code strip. A second detector element is positioned on the second side of the code strip and is generally aligned with the second track of the code strip. The second detector element is also positioned so that the second detector element is located a spaced distance along the displacement path from the first detector element.
摘要翻译: 光学编码器包括具有第一侧,第二侧,其上包括标记的第一轨道和其上包括标记的第二轨道的码带。 编码条可以沿相对于光学编码器的位移路径移动。 位于代码带的第一侧上的光源将光朝着码条引导。 第一检测器元件位于代码条的第二侧上,并且通常与代码条的第一轨迹对齐。 第二检测器元件位于代码条的第二侧上,并且通常与代码条的第二轨迹对齐。 第二检测器元件也被定位成使得第二检测器元件沿着与第一检测器元件的位移路径间隔开距离。