Electromagnetic wave concentrator and absorber
US9228761B2 · kind B2 · utility
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3References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Mar 3, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electromagnetic black hole may be fabricated as concentric shells having a permittivity whose variation is at least as great as an inverse square dependence on the radius of the structure. Such a structure concentrates electromagnetic energy incident thereon over a broad range of angles to an operational region near the center of curvature of the structure. Devices or materials may be placed in the operational region so as to convert the electromagnetic energy to electrical signals or to heat. Applications included solar energy harvesting and heat signature detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.