Is there a super powerful infrared flashlight for consumers?

I'm in 7th grade and I love playing manhunt, especially when I have an upper hand. I want to try to get an ultraviolet flashlight to use with my iPhone camera to basically get night vision. My price range is 25-50 dollars preferably.

Something like this?

Ultrafire Wf-501b Cree Infrared Ir 3w LED Night Vision Flashlight Torch+2 Pack Rechargeable Battery+Charger Set

http://www.amazon.com/...B00BM23P0M