AUTHENTICATING AND IDENTIFYING OBJECTS USING MARKINGS FORMED WITH CORRELATED RANDOM PATTERNS
摘要
<p>Described herein are techniques for authenticating and identifying objects using markings formed with correlated random patterns. In one embodiment, an object to be authenticated includes a substrate and a marking adjacent to the substrate. The marking includes a luminescent material distributed in accordance with a correlated random pattern, and the luminescent material exhibits photoluminescence having a quantum efficiency of at least 10 percent.</p>
申请公布号
WO2007131043(A2)
申请公布日期
2007.11.15
申请号
WO2007US68048
申请日期
2007.05.02
申请人
ULTRADOTS, INC.;PFENNINGER, WILLIAM, M.;KENNEY, JOHN