I have a weird project that is basically a narrow transom window 4'x9" on one side of a 5" box. The major visible side is on a dark hallway. On the other side is a sunny room that is being doored off. I'm putting the transom over the door.
So I would like to collect as much light from the sunny side, transfer that into the box, and have it help light up the nice transom I'm making on the dark side.
I have heard of using deck prisms to get light into the under-deck of sailing ships, but that sounds like it just diffuses the light from the flat side, and they are really tall. Maybe some regular prisms would work, but which way should I face them to get the most light in?
If I use a lens would it be curved on both sides or flat on the inside to get the most light into the box? Also I don't want some kind of piercing focused light, I want the light to be diffused inside the box. What if I put mirrors on the sides of the box?
Thanks for your attention!