| CPC G02B 13/003 (2013.01) [G02B 1/002 (2013.01); G02B 27/0025 (2013.01)] | 8 Claims |
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1. An optical hybrid lens comprising:
a refractive lens comprising a curved lens surface;
a metalens comprising at least one metasurface formed on the curved lens surface to follow the curved lens surface of the refractive lens; and
an adhesive layer between the curved lens surface of the refractive lens and the metalens,
wherein the at least one metasurface comprises a plurality of metasurfaces, each of the plurality of metasurfaces comprising a plurality of nanostructures having a dimension of a sub wavelength of incident light,
wherein the metalens further comprises a dielectric layer between adjacent metasurfaces of the plurality of metasurfaces, and
wherein each metasurface of the plurality of metasurfaces comprises:
a plurality of first nanostructures, each first nanostructure of the plurality of first nanostructures comprising a high refractive index column surrounded by a first material having a low refractive index; or
a plurality of second nanostructures, each second nanostructure of the plurality of second nanostructures comprising a low refractive index column surrounded by a second material having a high refractive index.
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