The L3Harris BNVD-1531 is the result of the L3Harris focus on continuous product improvements in the areas of size, weight, performance and power consumption. The BNVD-1531 offers a lightweight, ergonomic design similar to the AN/PVS-31 but with significant weight reduction over the AN/PVS-15. It also incorporates features such as adjustable diopters, manual gain adjustment, individually rotating monoculars and an integrated infrared illuminator. The L3 BNVD-1531 can be operated as a helmet-mounted or handheld system.
The two main differences between the BNVD-1531 and the PVS-31a is the integrated IR illuminator and adjustable diopters. The BNVD-1531 uses standard milspec PVS-14 optics which gives the user focusable diopters, but also, allows for a more cost effective solution.