[ChuckMcM]

I set something similar to this (didn't to be blue light scattering) for a friend who suffered from SAD (seasonal affective disorder) but had to stay living in Washington state for job reasons. They already had a basement with two sky lights and we used Cree 95 CRI LED stripss with a "2d parabola" (they were re-purposed from a concentrated solar project). It didn't do the 'sun at a distance' effect either, but the light quality was enough to get them through the winter while staying productive.