Coating substrates - eg optical quartz or glass surfaces with a protective layer of precious metal without impairing substrate props

摘要

The protective layers are applied in a vacuum chamber with a holder for the substrate and a holder for the crucible or crucibles contg. the coating material. The holder supporting the substrate is suspended from an electric motor for rotation, and the other holder has two crucibles, each contg. a coating material. The coating chamber also contains a heater for selectively heating the one or other crucible so as to vaporise the coating metal and coat the substrate.