Abstract: An evaporation source mechanism for rapid cycle coating. The evaporation source mechanism has a housing with a first deposition area on a first side and a second deposition area on a second side. The housing is movably connected to vacuum chamber such that the housing is rotatable relative to the vacuum chamber so that one side is in the deposition coating process and the other side is simultaneously loaded/reloaded. While one deposition area is in process under vacuum, the other is being prepared for the next cycle. When the coating cycle is complete, the housing swings from a port on the vacuum chamber, is rotated, and is then positioned with the second side of the housing against a sealing surface on the vacuum chamber wall. The coating system is away and electrically isolated from the loading/reloading of sources, permitting safe and efficient use of the equipment.