"Lobster" wrote | Have you considered a normal stud partition with a fixed | glazed (frosted glass) panel? I recently did this in order | to get some light into an internal landing, and it worked | very well. Fitted a high panel, about 3' long by 15" | deep.
That works best when the panel is fitted into a living room. If it's fitted into a bedroom then whenever someone puts the light on in the hall at night, it might disturb someone trying to sleep in the bedroom. The temptation then is not to switch the light on, and fall down the stairs in the dark.
Owain