Nanocomposite gradient refractive-index Fresnel optical-element

A nanocomposite optical-element comprising:

• a first surface, wherein the first surface is a Fresnel surface;
• a second surface;
• and
• a nanocomposite between the first and the second surface, the nanocomposite comprising of a plurality of refractive-gradients, the plurality of refractive-gradients comprising one or more nanofillers dispersed in a cured organic-matrix, the nanofillers concentration varying in three dimensional space defined by mutually orthogonal x-axis, y-axis, and z-axis, profiles of the plurality of refractive-gradients contributing to overall optical power of the optical-element as a whole, and a profile discontinuity exists between any of the plurality of refractive-gradients that are adjacent, wherein the plurality of refractive-gradients have either a radially increasing, or decreasing, refractive-index profile relative to an optical-axis, and each of the plurality of refractive-gradients also varying in respective cross-section profiles along the z-axis.