G - Physics – 02 – B
Patent
G - Physics
02
B
88/0.21
G02B 5/28 (2006.01) B42D 15/10 (2006.01) G07F 7/08 (2006.01) G09F 3/00 (2006.01)
Patent
CA 1229006
IMPROVED REFLECTIVE DIFFRACTIVE AUTHENTICATING DEVICE Abstract of the Disclosure A reflective-diffractive coating layer, situated at the interface between a substrate layer and an overcoat layer of the device, is divided into a set of small, slightly separated regions. This allows a direct bond of the overcoat layer to the substrate layer within the separation areas, which direct bond provides a more secure bond than that provided by a bond of the coating layer to the substrate and overcoat layers.
435598
Ebnoether Martin
Gale Michael T.
Knop Karl H.
Eckersley Raymond A.
Rca Corporation
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