Binoculars; Microscopes; Oculars; Periscopes; Stereoscopes; Telescopes; Electron microscopes; Hunting binoculars; Magnifying glasses; Magnifying lenses; Night vision goggles; Optical glasses; Optical inspection apparatus; Optical lens sights; Optical lenses; Reflecting telescopes; Reflectors for telescopes; Scientific and technical apparatus, namely, optical mirrors; Sighting telescopes for firearms; Telescopic sights for artillery