Meta-optical device having variable performance and electronic device including the same
US12066740B2 · kind B2 · utility
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2References
24Claims
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Key dates
| Filing date | Dec 15, 2021 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Jul 29, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A meta-optical device, which imparts a phase delay to incident light of a wavelength band, includes: a first electrode and a second electrode spaced apart from each other; a liquid crystal layer between the first electrode and the second electrode; a meta-surface layer located within the liquid crystal layer and including a plurality of nanostructures each having a shape dimension smaller than a center wavelength of the wavelength band; and a voltage device configured to apply a voltage between the first electrode and the second electrode. The meta-optical device may exhibit an electrically controlled variable focal length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.