FluxData has been making multi-spectral cameras since 2006.
The cameras pick up on specific wavelengths of light. If police were trying to find a red Ford pickup in traffic, for example, the color of the pick-up could be identified from a red Nissan nearby, or to locate the exact color. It can also detect images other cameras cannot, like picking out camouflage in a forest.
In August, the company announced the release of the FD-1665-UAV camera, a multi-spectral camera for unmanned aerial vehicles.