Abstract: The present invention relates to sunshade units for internal or external cladding of the transparent structures of a building façade comprising a plurality of lamellae (201) each having a substantially flat and elongated conformation along a respective development axis (B), and a structure (220,220?) supporting the lamellae configured to support the plurality of lamellae (201) in a condition of parallel and spaced apart lamellae along a direction orthogonal to the development axes (B), the structure (220,220?) supporting the lamellae being configured to support the plurality of lamellae (201) in a rotatable manner about a rotation axis parallel to or coincident with its development axis (B), characterized in that each lamella (201) of the plurality of lamellae (201) includes at least one surface portion which comprises at least a reflective layer (10) having at least one reflective surface (11), and a chromatic diffusion layer (20) having a first surface (21) proximal to the reflective surface (11) and a seco

Abstract: The present invention is directed to a chromatic effect light reflective unit (1; 1a-1g).

Abstract: The present disclosure is directed to an illumination device for providing a divergent illumination. The illumination device comprises a light source for emitting light in a visible spectrum; an output aperture, through which the light emitted from the light source exits the illumination device; and a layer structure. The layer structure comprises a scattering layer of a plurality of nanoscale scattering elements embedded in a host material and is positioned in an optical path of the emitted light that extends between the light source and the output aperture. The layer structure comprises further a pair of areal electrical contact layers, wherein the areal electrical contact layers extend at opposite sides of the scattering layer and are electrically connectable with a power source to generate an electric field across the scattering layer.

Abstract: The present disclosure is directed to an illumination device for providing a divergent illumination. The illumination device comprises a light source for emitting light in a visible spectrum; an output aperture, through which the light emitted from the light source exits the illumination device; and a layer structure. The layer structure comprises a scattering layer of a plurality of nanoscale scattering elements embedded in a host material and is positioned in an optical path of the emitted light that extends between the light source and the output aperture. The layer structure comprises further a pair of areal electrical contact layers, wherein the areal electrical contact layers extend at opposite sides of the scattering layer and are electrically connectable with a power source to generate an electric field across the scattering layer.

Abstract: A chromatic stratified panel structure (100) for generating a sun-sky-imitating effect in lighting systems (1) comprises two cover panels (102, 104) at least one of which being a transparent panel; an adhesive transparent polymeric layer (106) sandwiched between the two inner faces of the two cover panels; and at least one nanoparticle-based Rayleigh-like diffusing coating (108) applied to an inner face of at least one of the two cover panels (102, 104) and/or to a face of the adhesive transparent polymeric layer (106) and forming an interlayer between one of the cover panels (102, 104) and the adhesive transparent polymeric layer (106).

Abstract: A diffuser unit (9) for providing a chromatically tunable transmitted light (33) by scattering of light that is incident on the diffuser unit (9) by illumination with white light (89) comprises a scattering layer (17) with a plurality of nanoscale scattering elements (19, 63) and a host material (21, 61) separating the nanoscale scattering elements (19, 63). The diffuser unit (9) further comprises a pair of areal electrical contacts (23?) for providing an electric field (27) and at least one of the areal electrical contacts (23?) is configured to be transparent in the visible wavelength range. The scattering layer (17) has a wavelength dependent ensemble light scattering cross-section amount within the visible wavelength range that depends on a relative refractive index between the nanoscale scattering elements (19, 63) and the host material (21, 61) associated to an illumination direction, and an effective size of the nanoscale scattering elements (19, 63) associated to the illumination direction.

Abstract: A diffuser unit (9) for providing a chromatically tunable transmitted light (33) by scattering of light that is incident on the diffuser unit (9) by illumination with white light (89) comprises a scattering layer (17) with a plurality of nanoscale scattering elements (19, 63) and a host material (21, 61) separating the nanoscale scattering elements (19, 63). The diffuser unit (9) further comprises a pair of areal electrical contacts (23?) for providing an electric field (27) and at least one of the areal electrical contacts (23?) is configured to be transparent in the visible wavelength range. The scattering layer (17) has a wavelength dependent ensemble light scattering cross-section amount within the visible wavelength range that depends on a relative refractive index between the nanoscale scattering elements (19, 63) and the host material (21, 61) associated to an illumination direction, and an effective size of the nanoscale scattering elements (19, 63) associated to the illumination direction.

Abstract: A chromatic stratified panel structure (100) for generating a sun-sky-imitating effect in lighting systems (1) comprises two cover panels (102, 104) at least one of which being a transparent panel; an adhesive transparent polymeric layer (106) sandwiched between the two inner faces of the two cover panels; and at least one nanoparticle-based Rayleigh-like diffusing coating (108) applied to an inner face of at least one of the two cover panels (102, 104) and/or to a face of the adhesive transparent polymeric layer (106) and forming an interlayer between one of the cover panels (102, 104) and the adhesive transparent polymeric layer (106).