As a creative project, I'm trying to project some lines or text onto a window. That is, I have a large window that I still want to see out of, but I want to use an LCD projector from the inside to project onto the window. Someone looking at the window would be able to see through it, but could also read the time or temperature or something projected onto it.
Of course, most of the light from the projector is going to go through the window, but some of it is bouncing back in as glare. I'm going to experiment to see if I can take advantage of this effect, but it might be tricky.
Is there any other sort of window treatment I can apply that might make this work better? Perhaps some sort of stick on window darkening material that might reflect a bit more light from the inside? Or, some sort of stick-on plastic that would react to UV? (The LCD projectors tend to kick out quite a bit of UV, so maybe the visible light plus UV would be fine. Color doesn't matter... this is going to be in monochrome.)
Any other alternatives you can think of to get a similar effect? Open to oddball and creative ideas! Thanks.