Diffractive pigment blend and composition
AssigneeViavi Solutions Inc.
InventorsCornelis Jan DELST, Alberto ARGOITIA
Life of this patent
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Abstract
A diffractive pigment blend or composition is provided which includes a plurality of groups of all-dielectric diffractive pigment flakes. The pigment flakes of each group each include one or more dielectric layers for providing a background color, at least one of which includes a diffractive structure for providing a diffractive effect. Each group of pigment flakes provides a different diffractive effect, and the diffractive pigment blend or composition provides a combined diffractive effect that is a combination of the different diffractive effects. The combined diffractive effect may be a neutral white diffractive effect or may include a reversal in color travel.
Claims20
A diffractive pigment composition comprising:
- a pigment medium;
- and
- a plurality of groups of all-dielectric diffractive pigment flakes blended and dispersed in the pigment medium, wherein the all-dielectric diffractive pigment flakes of each group each include one or more dielectric layers for providing a background color, and wherein at least one of the one or more dielectric layers includes a diffractive structure for providing a diffractive effect;
- wherein each group of all-dielectric diffractive pigment flakes provides a different diffractive effect;
- and
- wherein the diffractive pigment composition provides a combined diffractive effect that is a combination of the different diffractive effects provided by the groups of all-dielectric diffractive pigment flakes.
A diffractive pigment blend comprising:
- a plurality of groups of all-dielectric diffractive pigment flakes, wherein the all-dielectric diffractive pigment flakes of each group each include one or more dielectric layers for providing a background color, and wherein at least one of the one or more dielectric layers includes a diffractive structure for providing a diffractive effect;
- wherein each group of all-dielectric diffractive pigment flakes provides a different diffractive effect;
- and
- wherein the diffractive pigment blend provides a combined diffractive effect that is a combination of the different diffractive effects provided by the groups of all-dielectric diffractive pigment flakes.
Dependencies are inferred from the claim text.