I wonder if anyone has created a mirror system for lighting their house with sunlight. Imagine a channel in your roof that brought in sunlight. It would be somewhat like a normal skylight, but it would divert the light throughout the entire house through a series of mirrors that bounced the light down into each room like a “light vent.”
I’ve seen various heliostats, such as the Wikoda Sunflower that can automatically track the sun in order to deflect its light to a particular location. It seems you could put one of those on your roof to maximize the amount of sunlight that would enter your main lightway.
Update: It looks like researchers at the University of Cincinnati have been working on this for several years.