CPC H04N 23/55 (2023.01) [G02B 1/002 (2013.01); G02B 5/286 (2013.01); H01L 27/14627 (2013.01); G02B 2207/101 (2013.01)] | 22 Claims |
1. A meta-optical device comprising:
a meta-lens comprising a plurality of concentric regions and a plurality of nano-structures arranged two-dimensionally in the plurality of concentric regions, each of the plurality of nano-structures having a pillar shape of which cross section is circular, elliptical or polygonal;
a band pass filter configured to transmit light of predetermined wavelengths within an operation wavelength band of the meta-lens;
a spacer layer provided between the meta-lens and the band pass filter, the spacer layer supporting the plurality of nano-structures and providing a separation distance between the meta-lens and the band pass filter; and
a refractive lens having a flat surface and a curved surface,
wherein the plurality of nano-structures are provided the flat surface side of the refractive lens.
|