Infrared devices for guiding weapons; detectors; optical and optoelectronic viewfinders; optical and optoelectronic viewing apparatus; optical and optoelectronic measuring apparatus; observation apparatus and instruments; binoculars; telescopes; laser range finders; electronic and optoelectronic target seeking, locating, surveillance and optical tracking devices; night vision goggles; software relating to the aforesaid articles; parts and components of these articles included in this class.