Optex Systems Holdings Inc. announced it has been awarded a delivery order for Laser Interference Filter (LIF) assemblies for $3 Million. The LIF is critical in protecting Night Vision Goggle systems fielded by the U.S. Military. The products will be manufactured at the Applied Optics Center (AOC) Division of Optex Systems Inc. With this order, the current Optex backlog is in excess of $40.5 million.