公开(公告)号：EP1748277B1

公开(公告)日：2008-12-31

申请号：EP06253843.4

申请日：2006-07-21

申请人： CANON KABUSHIKI KAISHA

发明人： Kadowaki, Hidejiro ,  Ishizuka, Ko ,  Kato, Shigeki

IPC分类号： G01B9/02

CPC分类号： G01B9/0209 ,  G01B9/02007 ,  G01B2290/45 ,  G01B2290/70

公开(公告)号：EP1113243A3

公开(公告)日：2005-11-09

申请号：EP00128543.6

申请日：2000-12-27

申请人： CANON KABUSHIKI KAISHA

发明人： Kato, Shigeki

IPC分类号： G01B11/02 ,  G01B11/14 ,  G01B9/02

CPC分类号： G01B11/14 ,  G01B11/026

摘要： An optical interference apparatus includes a light source, a beam splitter for splitting a light beam from said light source, a reference surface by which one split light beam from said beam splitter is reflected to propagate backward through the optical path, the light beam from said reference surface and the other split light beam which emerges from said beam splitter, is reflected by an object to be detected, and returns, being combined by said beam splitter and the combined light being finally used as interference light, and the two split light beams emerging from said beam splitter as convergent light, and an optical element having a function of converging a light beam or changing a divergent state of the light beam, said optical element being inserted in an optical path of one of the split light beams emerging from said beam splitter, and the reflected light beams from converging at said beam splitter positions of the two split light beams being combined as spherical waves with curvatures equal to each other owing to an effect of said optical element.

摘要翻译： 光干涉装置包括光源，用于分离来自所述光源的光束的分束器，将来自所述分束器的一个分束光束反射通过光路向后传播的参考表面，来自所述光源的光束 参考表面和从所述分束器出射的另一个分束光束被被检测物体反射，并且由所述分束器组合并且最终被用作干涉光的组合光返回，并且两个分束光束 从所述分束器出射为会聚光;以及光学元件，其具有会聚光束或改变光束的发散状态的功能，所述光学元件插入到从所述光束出射的一个分束光束的光路中 并且在两个分离光束的所述分束器位置处会聚的反射光束被组合为具有c的球形波 由于所述光学元件的影响，尿液彼此相等。

公开(公告)号：EP1045227A1

公开(公告)日：2000-10-18

申请号：EP00108243.7

申请日：2000-04-14

申请人： CANON KABUSHIKI KAISHA

发明人： Kaneda, Yasushi ,  Kadowaki, Hidejiro ,  Ishizuka, Kou ,  Kato, Shigeki ,  Kadoshima, Takayuki ,  Horyu, Sakae

IPC分类号： G01D5/36

CPC分类号： G01D5/36

摘要： An optical type encoder includes a light-emitting element, a scale, a light receiving element for detecting light from the scale when a light beam from the light-emitting element is projected onto the scale, an incremental signal resulting from displacement of the scale being obtained by detection by the light receiving element, two or more mark portions for producing an origin signal formed on the scale, and an origin detecting system for detecting the mark portions for producing the origin signal. The rising position or the falling position of at least one pulse signal indicative of the origin is determined by the detection signals of the two or more mark portions for producing the origin signal by the origin detecting system.

摘要翻译： 光学型编码器包括发光元件，刻度，用于当来自发光元件的光束投射到刻度上时用于检测来自刻度的光的光接收元件，由标尺的位移产生的增量信号 通过光接收元件的检测获得的两个或更多个用于产生在刻度上形成的原点信号的标记部分，以及用于检测用于产生原点信号的标记部分的原点检测系统。 指示原点的至少一个脉冲信号的上升位置或下降位置由原点检测系统产生原点信号的两个或更多个标记部分的检测信号确定。