Optical apparatus and instruments including protective goggles and protective spectacles for workers, shields, goggles for skiers, goggles used in sports, sight pieces for protective goggles and protective glasses for workers and for goggles for skiers, visors for protective helmets for workers and motorcyclists, sun-glasses and sun goggles, optical glasses, face-protecting peaks and shades; parts of the afore-mentioned goods as far as comprised in class 9