Chromatic sunshade cladding unit

Abstract

A sunshade cladding unit includes a plurality of lamellae each having a substantially flat and elongated conformation along a respective development axis, and a structure supporting the lamellae in a condition of parallel and spaced apart lamellae along a direction orthogonal to the development axes. The structure supports the lamellae in a rotatable manner about a rotation axis parallel to or coincident with its development axis. Each lamella includes at least one surface portion that includes at least a reflective layer having at least one reflective surface, and a chromatic diffusion layer having a first surface proximal to the reflective surface and a second surface, opposite and substantially parallel to the first. The chromatic diffusion layer includes a nano-pillar or nano-pore structure in a first material having a first refractive index, immersed in a second material having a second refractive index other than the first refractive index.