Patent ID: 11906701
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC G  H  B  E  F  Y | IPC B  E  G  H

Claim 1:
2. An article comprising a layer defining an anti-reflective surface extending along an axis, wherein a plane containing the axis defines a cross section of the layer and intersects the surface to define a line describing the surface in two dimensions, the layer comprising:
a series of micro-structures at least partially defined by the line, the line defining a series of alternating micro-peaks and micro-spaces along the axis, wherein a boundary between each adjacent micro-peak and micro-space includes at least one of a bend or an inflection point of the line; and
a plurality of nano-structures at least partially defined by the line, the line defining at least one series of nano-peaks disposed on at least the micro-spaces along the axis,
wherein each nano-peak has a height and each corresponding micro-peak has a height at least 10 times the height of the nano-peak, and
wherein the micro-spaces have a width of at least 50 micrometers.