Devices to direct the path of electromagnetic radiation
AssigneeCorning Incorporated
InventorPaulo Clovis Dainese, Jr.
Life of this patent
Estimating the term…
Abstract
Implementations are described to determine designs for devices that modify electromagnetic radiation incident upon the devices. In one or more examples, the designs can include arrangements of structures that are configured to perform one or more functions, such as beam steering, polarization state change, refraction, reflection, one or more combinations thereof, and the like. The designs can be generated using a metasurface design optimization process that includes a number of iterations with an efficiency of subsequent iterations of the metasurface design optimization process increasing with respect to at least one previous iteration.
Claims21
A method comprising:
- generating, by a computing system comprising one or more processors and memory, a first arrangement of first structures of a metasurface design disposed on a substrate, each of the first structures having a given shape;
- performing, by the computing system, one or more simulations that include propagating one or more electromagnetic radiation fields through the first arrangement of first structures;
- determining, by the computing system and based on the one or more simulations, a first efficiency of the first arrangement of first structures, wherein the first efficiency indicates a measure of similarity between modifications to the one or more electromagnetic radiation fields by the first arrangement of first structures and a target electromagnetic radiation field;
- determining, by the computing system and based on the first efficiency, modifications to boundaries of individual first structures to generate second structures to increase the first efficiency of the first arrangement of first structures;
- applying, by the computing system, one or more boundary constraints to the modifications to the boundaries of the individual first structures such that individual second structures generated from the individual first structures increase an efficiency of the metasurface design;
- generating, by the computing system, a second arrangement of the individual second structures disposed on the substrate;
- determining, by the computing system, a second efficiency of the second arrangement of the individual second structures based on one or more additional simulations propagating the one or more electromagnetic radiation fields through the second arrangement of the individual second structures;
- and
- analyzing, by the computing system, the second efficiency in relation to a target efficiency or in relation to a maximum efficiency.
A device comprising:
- a substrate;
- and
- an arrangement of structures disposed on the substrate, the structures having dimensions that correspond to wavelengths of electromagnetic radiation incident upon the substrate and the structures including:
- first structures having a first shape, the first shape having one or more first segments with each first segment of the one or more first segments having at least a threshold amount of roundness;
- and
- second structures having a second shape different from the first shape, the second shape having one or more second segments with each second segment of the one or more second segments having at least the threshold amount of roundness.
Dependencies are inferred from the claim text.