发明名称 Device and method for optically identifying objects.
摘要 <p>An identification code provided in relief on an object is read in that a radiation beam is obliquely incident on the surface on which the identification code is provided, and in that the identification code is observed by a detection system by means of the shadows thus cast.</p>
申请公布号 EP0240078(A1) 申请公布日期 1987.10.07
申请号 EP19870200561 申请日期 1987.03.24
申请人 N.V. PHILIPS' GLOEILAMPENFABRIEKEN 发明人 VAN HULZEN, GEERHARD;VOSKUILEN, LOTH
分类号 B07C5/34;G06K7/10;G06T1/00;(IPC1-7):B07C5/34 主分类号 B07C5/34
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