Abstract: A removable cap for an associated battery compartment housing at least one battery, whereby battery compartment forms a portion of a night vision device which is powered by the battery. The cap includes a one-piece contact that can be attached to the cap in a single operation. The contact includes a unitarily formed leaf-spring which makes mechanical and electrical contact with the battery when the cap is installed on the battery compartment.

Abstract: A night vision device comprising a facemask housing assembly having a peripheral surface defined by a rear surface contoured to a user's face and an open front surface, the housing assembly operative for encasing a pair of optical assemblies operative for receiving light from a viewed object via a first folded optical path and via a second direct optical path, combining the light from the first and second paths, and directing the combined light to a user's eye for viewing the object; where each optical assembly detachably coupled to the housing assembly.