The AN/PVS-7 is a single tube night vision device. Third generation image intensifiers are standard for military night vision. The PVS-7 is auto-gated to prevent image intensifier damage if exposed to intense light. The goggles have active night vision using a built-in infrared LED for low light situations. Like New condition on these Litton Electro-Optical System Night Vision Goggles with IR. All glass optics (don't confuse this with the delta model, which is glass/polycarbonate). The item "AN/PVS-7C Night Vision Goggle with IR M972/M973 (Military) with IR" is in sale since ...