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US 2018/0057693 A1Published application
Metallic Coatings with Improved Specular Response and Metameric Color Matching and Methods of Making the Same
AssigneeApple Inc.
InventorJames R. Wilson
Life of this patent
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Abstract
Metallic coatings containing metallic flakes with optical coatings are provided. The metallic flakes can be coated with multiple optical layers or a photonic crystal layer. The metallic flakes can also be coated with a pigment layer.
Claims20
A metallic coating, comprising:
- metallic flakes dispersed in a matrix,
- a first optical coating disposed on the metallic flakes having a first refractive index;
- and
- a second optical coating disposed on the first optical coating having a second refractive index.
1 more element
A metallic coating, comprising:
- metallic flakes dispersed in a matrix,
- a photonic crystal coating disposed on the metallic flakes, the photonic crystal coating comprises particles suspended in an ordered array in a medium, the particles have a different refractive index than the medium.
A metallic coating comprising:
- metallic flakes dispersed in a matrix, each of the metallic flakes comprise a protective oxide layer, and a dye or pigment embedded in the protective oxide layer.
Dependencies are inferred from the claim text.