问题
I know it exists for some Android devices, but can also an iPhone (4, 4S, 5, 6...) "see" and display infrared light that is captured by its camera?
回答1:
So apparently only the front camera (the one facing you) allows it. (The back one filters infrared).
Point a tv remote control to the front lens with Camera app on and you'll see the little precious beam.
Found it here: http://www.instructables.com/id/See-Infrared-LED-Light-with-an-iPhone-4/
来源：https://stackoverflow.com/questions/28011609/can-iphone-camera-see-infrared-light