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公开(公告)号:EP0638810A1
公开(公告)日:1995-02-15
申请号:EP94201941.5
申请日:1994-07-06
发明人: Costrop, Dirk, c/o Agfa-Gevaert N.V. , Bruyndonckx, Jan, c/o Agfa-Gevaert N.V. , Ulrix Kristof, c/o ACE
CPC分类号: G01P3/486 , G01D5/2497 , G01D5/34707
摘要: An encoder element (1) with high spatial resolution comprising an information layer with optically readable information, wherein the information is in the form of successive pits (10) written in by a laser beam and wherein the pits possess a specific optical property that substantially differs from that of the surrounding surface of said information layer.
摘要翻译: 具有高空间分辨率的编码器元件(1)包括具有光学可读信息的信息层,其中所述信息是由激光束写入的连续凹坑(10)的形式,并且其中所述凹坑具有基本不同的特定光学特性 与所述信息层的周围表面的距离。