Sorry, read sbierwagen's comment for the bad news: metamaterials like those used to construct this lens are tuned for very specific wavelengths so unless your photographic aesthetic is centered on a very particular colour of IR then you will be out of luck for quite a while.
Metamaterial lenses, if you can make them in visible-light frequencies, might be useful in the microlens array for light-field cameras, where they could act as both the bayer color filter pattern and as focusing element, and where their excellent optical qualities would be really helpful. (The Lytro light-field camera's lousy optical performance is mostly due to the microlens array: they have to be made of conventional materials, and the only lenses that would fit are singlets, which have chromatic abbertation and barrel distortion out the ass.)
