Optical apparatus and instruments and parts and accessories therefor included in this class, including objectives, eye pieces, reticles, focusing mechanisms, microscope bodies and barrels, diaphragms, shutters, lasers, laser diodes, optical tables and rails, optical component holders, mounts and positioning devices, optical components, including lenses, condensers, mirrors, windows, flats, beamsamplers, beamsplitters, couplers, separators, polarizers, prisms and filters; and all other goods in this class