CPC G02B 3/04 (2013.01) [G02B 1/002 (2013.01); G02B 5/126 (2013.01); G02B 1/14 (2015.01)] | 32 Claims |
1. A meta lens comprising:
a first lens surface; and
a second lens surface opposite to the first lens surface,
wherein at least one of the first lens surface and the second lens surface is a metasurface comprising a plurality of nanostructures having a sub-wavelength dimension that is less than a central wavelength λ0 in an operation wavelength band of the meta lens, and
wherein the first lens surface has a first deflection property based on positions of incident light in at least some regions of the first lens surface and the second lens surface has a second deflection property based on positions of incident light in at least some regions of the second lens surface,
wherein the first deflection property is different from the second deflection property, and
wherein the first lens surface and the second lens surface are configured such that the meta lens has a positive refractive power with respect to light in a red wavelength band, and has a negative refractive power with respect to light in a blue wavelength band.
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