There might be a startup opportunity here. If these devices have a real economic use -- spotting heat leaks -- and the only available alternative is orders of magnitude more expensive.<p>I don't do hardware (although this project looks simple), but it would be interesting to own one of these and a lot of people like me might be willing to part with a few bucks for the privilege of owning one (especially if it helps spot leaks that are adding to the heating bill).
Previously I saw a project which used a scanning pan-tilt head to collect data, but they used a narrow beam temperature sensor: MLX90614ESF-DCI which includes a black metal barrel.
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I bet this would look pretty cool outside mixed in with some other light painting gear. Always a pain to get the background/environment the colours you want.