Security feature based on a single axis alignment of mirrors in a structured surface that forms a micro mirror array
The disclosure relates to an optical security feature that is based on a single axis alignment of mirrors or facets in a structured surface that forms a micro mirror array. In an aspect, a device is described that includes a reflecting structure on a first layer, where the reflecting structure has a top surface with multiple embossed facets arranged in a spatial orientation that produces a flat ring optical effect upon incidence of light. In another aspect, a method for making the device is described that provides a reflecting layer and produces the reflecting structure on the reflecting layer with multiple facets arranged in the spatial orientation to produce the flat ring optical effect. In yet another aspect, an apparatus for making the device is described that includes a pressing device and a stamping device to transfer a pattern of the reflecting structure to a reflecting material.
1. A device comprising:
a reflecting structure,
the reflecting structure comprising facets,
the facets, in a spatial orientation, being configured to emulate an outside surface of a sphere, and
the facets being aligned in a micro mirror array on an axis parallel to the outside surface of the sphere.
2. The device of claim 1 , further comprising:
a substrate,
wherein the reflecting structure is disposed on the substrate.
3. The device of claim 1 , where the facets are in a top surface of the reflecting structure.
4. The device of claim 1 , where the facets are embossed facets.
5. The device of claim 1 , where the facets are arranged in a spatial orientation that produces an effect upon incidence of light.
6. The device of claim 5 , where the effect is a flat ring optical effect.
7. The device of claim 1 , where the facets have a distributed or a random alignment perpendicular to radial lines associated with the outside surface of the sphere.
8. The device of claim 1 , further comprising:
a substrate; and
a layer that is between the reflecting structure and the substrate.
9. A device comprising:
a reflecting structure,
the reflecting structure comprising facets,
the facets, in a spatial orientation, being configured to emulate an outside surface of a sphere, and
a reflection pattern from the facets emulating a brushed surface on the sphere.
10. A method comprising:
providing a reflecting layer; and
producing a reflecting structure, on the reflecting layer, having facets,
the facets, in a spatial orientation, being configured to emulate an outside surface of a sphere, and
the facets being aligned in a micro mirror array on an axis parallel to the outside surface of the sphere.
11. The method of claim 10 , where the reflecting layer is disposed on a layer that is disposed on a substrate.
12. The method of claim 10 , where producing the reflecting structure comprises:
applying a cast for embossing the facets on a top surface of the reflecting layer.
13. The method of claim 10 , where the facets are embossed facets.
14. The method of claim 10 , where the facets are arranged in a spatial orientation that produces an effect upon incidence of light.
15. The method of claim 14 , where the effect is a flat ring optical effect.
16. The method of claim 10 , wherein the facets have a distributed or a random alignment perpendicular to radial lines associated with the outside surface of the sphere.
17. The method of claim 10 , wherein a reflection pattern from the facets emulates a brushed surface on the sphere.
18. A device comprising:
a reflecting structure,
the reflecting structure comprising facets,
the facets, in a spatial orientation, being configured to emulate a surface of a sphere, and
the faceting have a distributed or a random alignment perpendicular to radial lines associated with the surface of the sphere.
19. The device of claim 18 , where the facets are in a top surface of the reflecting structure.
20. The device of claim 18 , where the facets are embossed facets.