Main Question or Discussion Point
Is there a way to change visible light like the light coming out of the screen you're reading into infrared or any other invisible light and then take that and change it back somewhere else? What I'm what i'm trying to do is make a computer screen or maybe a T.V screen visible to only those who are wearing a certain type of goggles, that changes IR light back into visible light. Is this possible? And if so is it easy?