Thin film structure having magnetic and color shifting properties
AssigneeOptical Coating Laboratory, Inc.
InventorsRoger W. Phillips, Paul G. Coombs
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Abstract
Thin film structure having magnetic properties and optically variable properties comprising a substrate and a multilayer interference coating carried by the substrate producing an inherent color shift with angle. The interference coating has a metal-dielectric design which includes a metal which has magnetic as well as reflective properties.
Claims11
In a thin film structure having magnetic properties and optically variable properties, a substrate and a multilayer interference coating carried by the substrate producing an inherent color shift with angle, said interference coating having a metal-dielectric design which includes a metal which has magnetic as well as reflective properties.
In a thin film structure having substantial color shift with angle of light incidence and viewing, a symmetrical multilayer interference coating producing an inherent color shift with angle, said symmetrical multilayer interference coating being a metal layer formed of a metal which is highly reflecting and which has magnetic properties and a dielectric layer disposed on opposite sides of the metal layer and a metallic absorber layer disposed on each of the dielectric spacer layers.
Dependencies are inferred from the claim text.