-
1.发明公开Optical data carrier having an optical diffractive code, and related reading apparatus 有权与基于衍射的光学代码读取器和相关联的光学数据载体
公开(公告)号：EP1321890A1
公开(公告)日：2003-06-25
申请号：EP01830772.8
申请日：2001-12-18
发明人： Casini, Michela, Ist. Poligrafico e Zecca dello St , Luciani, Laura, Ist Poligrafico e Zecca dello Stat , Lucentini, Flavio, Gruppo Testa Elettronica Srl
CPC分类号： G06K19/06046 , G02B5/1814 , G03H1/0244 , G03H1/028 , G03H2260/14 , G06K19/14 , G06K19/16 , G06K2019/0629
摘要： Optical data carrier (1) having a multilevel construction, comprising a first (2) and a second (3) diffractive structure obtained on overlapped levels, wherein one (3) of these structures has a diffractive information code and the other one (2) a diffractive control code acting as read key for the information code, the construction being such that, upon exposing the device to a substantially monochromatic electromagnetic wave beam, each structure deflects such incident electromagnetic wave beam into one or more diffracted beams spatially independent from the one or more diffracted beams generated by the other structure.
摘要翻译： （1）具有多级结构，包括光学数据载体上的第一（2）和第二（3）衍射结构获得上重叠的水平，worin一个合成结构（3）具有衍射信息代码，而另一个（2） 作用的信息代码作为读出键的衍射控制码，被检查的构造，其中，在该装置暴露于基本上单色的电磁波束，每个结构偏转搜索入射电磁波束成空间独立于一个的一个或多个衍射光束 或多个衍射由其它结构产生的光束。
-
2.发明授权Optical data carrier having an optical diffractive code, and related reading apparatus 有权与基于衍射的光学代码读取器和相关联的光学数据载体
公开(公告)号：EP1321890B1
公开(公告)日：2006-11-02
申请号：EP01830772.8
申请日：2001-12-18
发明人： Casini, Michela, Ist. Poligrafico e Zecca dello St , Luciani, Laura, Ist Poligrafico e Zecca dello Stat , Lucentini, Flavio, Gruppo Testa Elettronica Srl
CPC分类号： G06K19/06046 , G02B5/1814 , G03H1/0244 , G03H1/028 , G03H2260/14 , G06K19/14 , G06K19/16 , G06K2019/0629
-
搜索结果
2 条记录 (耗时 0.009 秒)
