Machines to deposit by a high vacuum sputtering technique a thin layer of material sputtered from a target on a substrate, in the field of precision film deposition; precision thin film deposition machines to deposit a thin layer of material sputtered from a target on an optically transparent substrate, in the field of precision film deposition; machines to build multi-layer optical filters, in the field of precision film deposition; machines to build gain flattening, add/drop multiplexers, in the field of precision film deposition; machines to build multi-dielectric narrow band optical filters for dense wavelength division multiplexing applications, in the field of precision film deposition; vacuum pumps for use in apparatus for vacuum deposition of optical coatings on substrates, parts for all the aforementioned goods

Scientific apparatus incorporating a vacuum chamber for use in vacuum deposition of an optical coating on a substrate using a vacuum sputtering technique; electronic apparatus to generate and control a gas plasma in the manufacture by vacuum deposition of devices incorporating an optical coating; electronic apparatus, namely laser optical monitors for use in the manufacture by vacuum deposition of multi-layer filters; positive ion beam generators to operate under vacuum plasma generating conditions and to generate a positive ion beam or beams, being parts of vacuum sputtering apparatus; scientific apparatus to bombard a target with ions from a broad beam ion source to eject material from the target; computers and computer programs to control a vacuum sputtering process in the production of optical networking components; electric current neutralizers for neutralizing ion beams from ion beam sources in vacuum sputtering apparatus; electronic power supplies; gas metering devices, namely, gas meters and gas gauges for use in vacuum sputtering apparatus during deposition of optical coatings on substrates; vacuum measurement devices, namely vacuum gauges for use in vacuum sputtering apparatus for use in vacuum deposition of optical coatings on a substrate; and parts for all the aforementioned goods