ILLUMINATION DEVICE

摘要

An embodiment of an illumination device comprising a broad band artificial light source and a non-liquid chromatic diffuser transparent to visible light comprising a dispersion of elements of nanometrical dimensions of a first material with of certain refractive index in a second material with different refractive index, wherein the light is scattered producing a separation and different distribution between cold and hot components of the light originally produced by the source, according to a scattering process in “Rayleigh” regime. The device allows illumination effects similar to those of natural outdoor environments to be reproduced in indoor environments.

主权项

1. An illumination device comprising:
a broad-band artificial light source comprising one or more active elements which are configured to emit photons or to absorb photons and then re-emit photons at a higher wavelength; and a chromatic diffuser; wherein the maximum dimension of said chromatic diffuser is equal to or greater than twice the minimum dimension of the projection of the largest of said active elements in a plane perpendicular to the maximum emission direction of said light source, wherein the maximum dimension of said chromatic diffuser is defined as the maximum distance between any two points belonging to the projection of the chromatic diffuser in a plane perpendicular the maximum emission direction; and wherein the illumination device is configured to produce a narrow inner cone of transmitted light and a wider outer cone of diffused light, the transmitted light being more intense and warmer than the diffused light.