Security document with micro-prisms
AssigneeReserve Bank of Australia
InventorsPhillip John Fox, Wayne Keven Jackson
Life of this patent
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Abstract
A security document including a substrate of transparent polymeric material, and opacifying layers provided on opposing sides of the substrate, the opacifying layers acting to guide light propagating within the substrate, wherein the substrate is formed with at least one micro-prism for diverting light propagating within or entering the substrate.
Claims21
1-23. (canceled)
A security document including a substrate of transparent polymeric material, and opacifying layers provided on opposing sides of the substrate, the opacifying layers acting to guide light propagating within the substrate, wherein the substrate is formed with at least one micro-prism for diverting light propagating within or entering the substrate.
Dependencies are inferred from the claim text.