Cameras (photography); slide projectors; photographic viewfinders; diaphragms (photography); filters for ultraviolet rays for photography; tripods for cameras; photography apparatus bags; lenses for astrophotography; lens hoods; containers for microscope slides; eyepieces; diffraction apparatus (microscopy); microscopes; lenses (optical); magnifying glasses (optics); periscopes; mirrors (optical); prisms (optics); optical glass; refractors; spectroscopes; spectrograph apparatus; stereoscopes; telescopes; sighting telescopes for firearms; eyeglass cleaning cloth; eyeglass cases; spectacle glasses; eyeglass