Do Vizio TV remotes use infrared light?

I have a Vizio smart tv and for fun did the iPhone camera trick (iPhone cameras can pick up infrared light from tv remotes if the camera is pointed at the emitter on the remote and press a button). I then curiously looked at the emitter with my own eye and pressed a button and SAW A FAINT FLASH! This brought me to the inquisition of whether the remote emitters slip into the visible light spectrum a little, I can see a little infrared, or the remotes simply don't use infrared. Please let me know and thank you.

Yes, it uses an IR remote. Yes, the near IR used in TV remotes is sometimes visible. If you look at the CCTV cameras with IR night time illuminators, you will see a faint red glow from the IR diodes. It is harder to see them on in a TV remote because they are flashed on and off so quickly, where the CCTV illuminators are on constantly. There are 880 nm IR leds (probably most popular because CCTV cameras and some photo diodes respond better to this wavelength) and 940-950 nm Leds (not visible to humans, but still visible to cameras, but not as much as the 880 nm ones). Human vision is supposed to go from 390 to 750 nm, so the 880 nm leds probably do produce some 750 nm radiation since we can see it.