Bringing daylight into dark spaces

I’ve been thinking of various ways to bring daylight into dark interiors to make use of the readily available light. In my research I found this inventive product and wanted to share it:

From Inhabitat magazine, “CoeLux uses the latest energy-saving LED technology to reproduce the sunlight spectrum. It uses a sophisticated optical system to create a sensation of distance between the “sky” and the “sun”. And its surface is made of nano-structured materials only a few millimeters thick that recreate the entire Rayleigh scattering process which occurs in the atmosphere and makes the sky appear blue. These elements can be incorporated into high-tech false ceiling and window systems, to create a “skylight” for interior and underground spaces where the sun can’t reach.”