The Morovision IR Spot/Flood Lens is a nifty little gizmo. It fits over your existing IR source and allows you to focus and increase the range of the IR beam. This is particularly useful when you add high powered accessory lenses to your night vision device. This unit is designed to work with and fit on the Morovision PVS-7 or MV-14 night vision monocular.
Typically, your IR illuminator produces a beam approximately 40° wide, with a range of approximately 50' (15 m). With this handy gizmo, you can narrow the beam to 20°, which will give you visibility beyond 150' (50 m). By focusing the beam, you intensify it, and reduce the stray IR illumination. It slips on easily over the front your existing IR unit, and stows away easily when not in use.