Pigment composition and pigment flake
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 pigment composition comprising:
- a first plurality of pigment flakes that include a first pigment flake,
- the first pigment flake comprising:
- a first core layer, and
- a first encapsulating layer that surrounds the first core layer;
- and
- a second plurality of pigment flakes that include a second pigment flake,
- the second pigment flake comprising:
- a second core layer, and
- a second encapsulating layer that surrounds the second core layer, and
- a first thickness of the first core layer being different from a second thickness of the second core layer.
A pigment composition comprising:
- a first pigment flake that includes:
- a first core layer, and
- a first encapsulating layer that surrounds the first core layer,
- a second encapsulating layer that surrounds the first encapsulating layer, and
- a third encapsulating layer that surrounds the first encapsulating layer;
- and
- a second pigment flake that includes a second core layer,
- a first thickness of the first core layer being different from a second thickness of the second core layer.
A first pigment flake comprising:
- a first core layer, and
- a first encapsulating layer that surrounds the first core layer,
- a first thickness of the first core layer being different from a second thickness of a second core layer of a second pigment flake that is in a same composition as the first pigment flake, and
- the first encapsulating layer and a second encapsulating layer of the second pigment flake have a substantially same thickness.
Dependencies are inferred from the claim text.