Protective eyepieces; Optical lenses; Optical communications apparatus and instruments, namely, optical transmitters and optical receivers; Apparatus and instruments for use in the field of astronomy, namely, zenith telescopes, prisms, body tubes for telescopes, prisms for telescopes; Refractors being telescopes; Binoculars; Telescopes; telescopic sights for artillery; baby monitors; Cameras; Stands for photographic apparatus; tripods for cameras; Accessories for telescopes, namely, filters f...