Infra-red lens
NSN 6685-01-244-7063
NSN 6130-01-509-6450
NSN 5996-00-043-1991
NSN 6240-01-224-6941
NSN 5905-01-474-5173
NSN 7035-01-373-6782
NSN 6135-00-505-0679
NSN 6320-00-371-8335
NSN 5975-00-356-3686
NSN 6645-00-736-0476
NSN 5930-01-373-7729
NSN 6135-00-683-0536