While I was serving in my country's army, I had access to both night vision and thermal goggles. When I asked about their costs they told me that although most

While I was serving in my country's army, I had access to both night vision and thermal goggles. When I asked about their costs they told me that although most of the components (lenses, energy units & wiring etc) were produced locally, the chips that converted light & thermal signatures to vision were imported, and they cost a lot. So they're probably the reason that makes these equipment so costly.