Optical apparatus and instruments, in particular binoculars, telescopes, spyglasses, optical lenses, instruments containing eyepieces, eyepieces, opticians' goods, optical glass, prisms, cases especially made for photographic apparatus and instruments, stands for optical apparatus and instruments, stereoscopes, stereoscopic apparatus, telescopes, telemeters, close-up lenses, telescopic sights and target sights, in particular for firearms, optical target seekers, as well as components of the mentioned goods; observation apparatus, distance measuring apparatus and lenses.;