i have a hallway with several doors leading to some rooms. above each door on the hallway i positioned a light which glows red or green, depending if the door is locked or not. the problem is that the light shines thru the door and is visible on the floor in the room on the other side as well, but there is no hole/space or anything which could allow the light to pass thru - there's just the door and the wall around it. is there a way to block the light and prohibit it from shining thru?
thx.