You can travel with NODS in your carry-on baggage. Remove the batteries (which should be done regardless) and I'd look on TSA's website, as well as your individual airline's website, to see what their individual regulations are and print them out in case you get an ignorant check-in counter person.
I know Southwest is good because I flew out to Vegas to do some shooting with a friend of mine back in December and took my body armor (PC + helmet) in my carry-on baggage, as well as my SBR, two pistols, well over the 11 pound limit of ammo, etc. in checked baggage. I had asked SWA about the night vision being in carry-on because I sure as hell was not packing that into checked baggage to get damaged or stolen en route, but I ended up not receiving them from the builder before I left for my trip.