Light-field imaging using a gradient metasurface optical element
US10591643B2 · kind B2 · utility
18Cited by
4References
21Claims
0Family size
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Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Jan 4, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of 3D imaging systems that use a multifunctional, nano structured metalens to replace the conventional microlens array in light field imaging are disclosed. The optical focusing properties of the metalenses provided by gradient metasurface optical elements. The gradient metasurfaces allow the properties of the elements of the metalens array to be changed by tuning the gradient metasurfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.