High chroma optically variable color-shifting glitter comprising particles having interference structure coating
AssigneeJDS Uniphase Corporation
InventorsAlberto Argoitia, Kent E. Coulter, Roger W. Phillips
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Abstract
Opaque glitter particles that are uniform in size and shape are disclosed that have an optically variable color with a change in angle of incident light. The glitter particles have an organic substrate and an optical interference structure on one or both sides of the organic substrate. The optical interference design can be a Fabry-Perot structure or can be an optically variable ink.
Claims14
Opaque color shifting glitter comprising particles, cut such that their shape and size is substantially uniform, said particles each comprising an inorganic thin film optical interference structure for providing a perceivable color shift with a change in viewing angle or angle of incident light, in the visible spectrum, wherein said inorganic thin film interference structure of each particle is supported by an organic support layer for providing rigidity and for preventing the particles from curling and wherein the inorganic thin film interference structure of each particle is only on one side of the organic support layer.
Opaque color-shifting glitter comprising particles having:
- an organic support layer and;
- a) two single or double period Fabry-Perot structures sharing a same reflector layer on only one side of the organic support layer or
- b) an optically variable color shift ink on only one side of the organic support layer.
Dependencies are inferred from the claim text.