Night-vision devices with extraordinary performance characteristics (high
gain, specific
spectral sensitivity, fine
resolution, low
noise) are heavily export-restricted by the few states capable of producing them, mainly to limit their
proliferation to enemy combatants, but also to slow the inevitable
reverse-engineering undertaken by other world powers. These precision components, such as the
image intensifiers used in
night-vision goggles and the
focal-plane arrays found in
surveillance satellites and
thermal cameras, have numerous civil applications which include
nature photography,
medical imaging,
firefighting, and
population control of predator species. Night scenes of wild elephants and rhinos in the
BBC nature documentary series
Africa were shot on a Lunax Starlight HD camera (a custom-built
digital cinema rig encompassing a Generation 3 image intensifier), and recolored digitally. In the United States, civilians are free to buy and sell American-made night vision and thermal systems, such as those manufactured by defense contractors
Harris,
L3 Insight, and
FLIR Systems, with very few restrictions. However, American night vision owners may not bring the equipment out of the country, sell it internationally, or even invite non-citizens to examine the technology, per
International Traffic in Arms Regulations. Export of American image intensifiers is selectively permitted under license by the
United States Department of Commerce and the
State Department. Contributing factors in acquiring a license include diplomatic relations with the destination country, number of pieces to be sold, and the relative quality of the equipment itself, expressed using a
Figure Of Merit (FOM) score calculated from several key performance characteristics. Competing international manufacturers (European defense contractor Exosens Group, Japanese scientific instrument giant
Hamamatsu Photonics, and Russian state-financed laboratory JSC Katod) have entered the American market through licensed importers. In spite of their foreign origin, re-export of these components outside of the United States is restricted similarly to domestic components. A 2012 assessment of the sector by the
Department of Commerce and
Bureau of Industry and Security made the case for relaxing export controls in light of the narrowing performance gap and increased competition internationally, and a review period undertaken by the
Directorate of Defense Trade Controls in 2015 introduced much more granular performance definitions. == Other technologies ==