DESCRIPTION:
How Thermal Vision Works

Night vision scopes and goggles lets you see light while thermal vision in essence lets you “see” heat. Thermal vision technology captures the lower end of the light spectrum. This end of the infrared light spectrum is emitted as heat. Luckily, warm bodies such as animals and people emit more of the light than trees or other inanimate objects, so people and animals stand out with thermal visioning very clearly.
Thermal vision gear works by using a special lens to focus infrared light that is being emitted by the objects being viewed through the device. In about one-thirtieth of a second, infrared-detector elements scan the light being emitted and generate a thermogram which is then translated into electric impulses which can be sent on their merry way to a circuit board with a dedicated chip so that the information can be translated and sent on to the display. At that point, you can check out the image that crops up on the display. The whole thing takes place in a fraction of a second.

Flir One
Walking My Doggie Back Home @ https://www.youtube.com/watch?v=EWsuQktfSpA

More info @ http://www.flir.com/flirone/ios-android/

Spy Goggles
Mysteries of Life @ https://www.youtube.com/watch?v=LerjiAyfjiQ

Magic Glasses - Goggles filmed with apps
https://www.youtube.com/watch?v=mVOUab2wyBc

Toys & Apps

There are many apps with fake thermal, x-ray vision and night vision or ghost vision.

Lots of toys including

Nerf infrared Night Vision Goggles w/ Camcorder

Real Tech Spy Net Infrared Stealth Night Vision Binoculars

Real Tech Spy Net ULTRA VISION GOGGLES

Wild Planet Ent. Spy Gear Night Vision Goggles

EyeClops Night Vision Spy Goggles