9001: Optical fibres, lenses, mirrors, prisms, etc

900110: Optical fibres, except for telecommunications 900120: Sheets/plates of polarising material 900130: Contact lenses 900140: Spectacle lenses of glass 900150: Spectacle lenses of other materials 900190: Prisms, mirrors and optical elements nes, unmounted 9001: Optical fibres, lenses, mirrors, prisms, etc