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US 11,960,107 B2Granted
Nano-structures patterned on micro-structures
AssigneeNanotech Security Corp.
InventorsMohsen Keshavarz Akhlaghi, Clint Landrock
Life of this patent
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Abstract
Described are optical elements or displays using micro-structures and nano-structures formed conformally thereon that operate to generate optical effects. Such elements and displays may be useful for applications such as displays, and anti-counterfeiting.
Claims25
An optical device comprising:
- a generally planar substrate;
- a plurality of micro-structures having an arcuate cross-sectional shape disposed on at least a portion of the planar substrate and arranged in a repeating pattern;
- and
- a plurality of nano-structures conformally disposed on at least a portion of the disposed plurality of microstructures, the plurality of nanostructures:
- providing additional means of directing incident light on the plurality of nano-structures to a space above or below the device;
- having a thickness of less than 50 μm and more than 1 μm;
- and
- having at least one feature size less than 500 nm;
- the device being configured such that when visible light is incident over the device, the plurality of nano-structures provides means of creating structural colors.
6 more elements
An optical device comprising:
- a plurality of surface features formed on a substrate and arranged in a repeating pattern, at least a portion of the plurality of surface features:
- having an arcuate cross-sectional shape;
- having an in-plane size of at least 2 μm and a height variation of between 1 μm and 50 μm;
- and
- defining a micro surface;
- and
- a second feature conformally disposed on at least a portion of the micro surface and having three-dimensional minimum feature sizes of 500 nm or less, thereby defining a plurality of nano-structures.
4 more elements
An optical device comprising:
- a generally planar substrate;
- a plurality of micron-sized surface features arranged in a repeating pattern and extending from a plane of the substrate, the surface features having an arcuate cross-sectional shape having a height variation less than 50 μm and more than 1 μm, thereby defining a plurality of microsurfaces;
- and
- means for creating a plasmonic optical effect on optical frequency incident light, the means for creating the plasmonic optical effect formed on the micro-surfaces and conforming to some or all of the surface features of the plurality of microstructures.
1 more element
An optical device comprising:
- a generally planar substrate;
- a plurality of micron-sized surface features arranged in a repeating pattern extending from a plane of the substrate, the surface features having an arcuate cross-sectional shape having a height variation less than 50 μm and more than 1 μm, thereby defining a plurality of microsurfaces;
- and
- means for creating a diffractive optical effect on optical frequency incident light, the means employing features having at least one sub-micron feature dimensions formed on the microsurfaces and conforming to some or all of the surface features of the microstructures.
1 more element
Dependencies are inferred from the claim text.