Patent ID: 11906698
Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
Field: Optics (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. A substantially flat optical component for lensing incoming electromagnetic radiation having at least one wavelength and a first phase into outgoing electromagnetic radiation having a second phase, comprising:
a transparent substrate; and
at least one metasurface, coupled to the substrate, comprising a plurality of optical meta-units to change at least the first phase to the second phase, wherein the plurality of optical meta-units comprises a plurality of singular pillars, a plurality of annular pillars, and a plurality of concentric rings, wherein each of the plurality of meta-units comprises silicon or TiO2;
wherein each optical meta-unit of the plurality of optical meta-units is positioned at a distance that is less than the wavelength from at least a different optical meta-unit;
wherein the flat optical component is adapted to correct both chromatic and monochromatic aberrations across the wavelength;
wherein each of the plurality of meta-units comprises a meta-unit having a shape to diffractively scatter the electromagnetic radiation;
wherein the shape comprises an archetype shape having one or more varying geometrical parameters; and
wherein each of the plurality of meta-units is configured to provide a range of optical phase offset and phase dispersion for a broadband achromatic metasurface lens.