Dispersionless and dispersion-controlled optical dielectric metasurfaces
US10670782B2 · kind B2 · utility
37Cited by
22References
12Claims
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Key dates
| Filing date | Jan 19, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Mar 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0056
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Metasurfaces comprise an array of pillars in a lattice. The dimensions of the pillars and the spacing are varied to obtain desired optical properties. The dispersionless metasurfaces can focus optical light over a broad wavelength range. Specific dispersion profiles for the metasurfaces can be designed. Gratings can be fabricated having similar properties as the array of pillars. Pillars in the metasurfaces can have different cross-section profiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.