LIGHT BEAM EMITTERS FOR TARGET ILLUMINATION, AND FILTERS, INTERFACES, CONTROLLERS AND MOUNTING ASSEMBLIES THEREFOR; NIGHT VISION SYSTEMS, namely, NIGHT VISION GOGGLES, NIGHT VISION MONOCULARS, NIGHT VISION SCOPES, NIGHT VISION WEAPON SIGHTS, PANORAMIC NIGHT VISION GOGGLES, FUSION GOGGLES, FUSION MONOCULARS, FUSION SCOPES, FUSION WEAPON SIGHTS, [ GPS UNITS, ] ELECTRONIC COMPASSES, FRIEND OR FOE IDENTIFIERS, TARGET DESIGNATORS, FIRE CONTROLLERS, LASER BASED TRAINERS AND ENGAGEMENT INSTRUMENTS, AND INTERFACES, CONTROLLERS AND MOUNTING ASSEMBLIES THEREFOR