Chromatic mirror, chromatic panel and applications thereof

Abstract

Chromatic components are presented which alleviate the usage in various applications in that this chromatic component is, according to a first aspect of the present application, made-up of a mirroring surface and a diffusing layer in front of the mirroring surface, which preferentially scatters short-wavelength components of impinging light with respect to long-wavelength components of the impinging light, and in that according to another aspect, the chromatic component is made up of a stratified-glass panel which comprises two less sheets sandwiching an adhesive transparent polymeric film wherein the adhesive transparent polymeric film forms a diffusing layer which preferentially scatters short-wavelength components of light passing the stratified-glass panel with respect to long-wavelength components of this light with respect to long-wavelength components of the same.

1 . A chromatic panel for an illumination system, which simulates the illumination of the sky and the sun inside an ambience, the chromatic panel being configured as a stratified-glass panel and comprising
 two glass sheets; and   an adhesive transparent polymeric film with a substantially even or completely even thickness sandwiched in between the two glass sheets, wherein the adhesive transparent polymer film:
 is configured to fix the two glass sheets to each other, 
 has a first dispersion of light-scattering centers of average size smaller than 250 nm embedded therein, 
 is configured to act as a diffusing layer, which, in a Rayleigh or a Rayleigh-like regime, preferentially scatters short-wavelength components of impinging light passing through the stratified-glass panel with respect to long-wavelength components of the impinging light, and 
 does not, or substantially does not absorb light. 
   
     
     
         2 . The chromatic panel of  claim 1 , wherein the glass sheets are float glass sheets sandwiching the adhesive transparent polymeric film, wherein facets of the two float glass sheets facing the adhesive polymeric film form glass tin sides of the two float glass sheets. 
     
     
         3 . The chromatic panel of  claim 1 , wherein the first dispersion of light-scattering centers comprises inorganic nanoparticles of diameter smaller than 250 nm embedded therein that are protected against photo-catalysis induced by near-ultraviolet (near-UV) and/or visible light radiation. 
     
     
         4 . The chromatic panel of  claim 1 , wherein the adhesive transparent polymer film comprises a second dispersion of light-scattering centers of average size exactly or greater than 5 times the average size of the light-scattering centers of the first dispersion and having a size larger than 1 μm. 
     
     
         5 . The chromatic panel of  claim 4 , further comprising a mirroring surface, such that the chromatic panel has a reflectance for white light at a specular angle smaller than 50% with respect to the case of comprising only the first dispersion without the second dispersion. 
     
     
         6 . The chromatic panel of  claim 5 , wherein the combined action of the mirroring surface and the diffusing layer produces a haze in reflection which is greater than 10%, greater than 20%, or greater than 30%, for impinging blue light at 450 nm. 
     
     
         7 . The chromatic panel of  claim 1 , wherein the adhesive transparent polymer film is configured to act as a diffusing layer that scatters at least 10, more than 20%, or more than 30% of any impinging blue light at 450 nm. 
     
     
         8 . The chromatic panel of  claim 1 , further comprising a mirroring surface. 
     
     
         9 . A system for illumination for simulating the illumination of the sky and the sun inside an ambient, the system comprising:
 a chromatic panel according to  claim 1 , and   an illuminator configured as a white light source to illuminate the chromatic panel.   
     
     
         10 . An interior room of a building for providing therein a sun-sky-appearance, the room having a wall, a ceiling, and a floor and the room comprising a system of  claim 9  for illumination for simulating the illumination of the sky and the sun inside an ambient. 
     
     
         11 . The chromatic panel of  claim 8 , wherein the mirroring surface is deposited as a coating or film onto one of the glass sheets. 
     
     
         12 . The chromatic panel of  claim 8 , wherein the mirroring surface is formed by an aluminum (Al) metal mirror foil. 
     
     
         13 . The interior room of  claim 10 , wherein the illuminator is configured as the white light source to illuminate the chromatic panel in transmission; the chromatic panel is part of the wall or the ceiling of the room; and the illuminator is positioned outside the room.