This invention relates to a security label for the detection of counterfeiting and tampering. The invention comprises a combination of an iridescent laminated or multilayered material with a lenticular layer. The iridescent layer exhibits an angular dependence in its coloration in reflection and/or transmission and the lenticular layer acts as a filter to light of a given angle of incidence.
申请公布号
US8512857(B2)
申请公布日期
2013.08.20
申请号
US20020483690
申请日期
2002.07.02
申请人
LAWRENCE CHRISTOPHER ROBERT;O'KEEFE EOIN SEIORSE;QINETIQ LIMITED