Patent ID: 6798519
Filing Date: 2004-09-28
Classification: H01J,H01L

Abstract:
An optical window deposition shield for accessing a process space through a deposition shield in a plasma processing system comprising:a plug configured to provide optical access through said deposition shield, said plug comprises a frontal surface and a perimeter surface; a flange coupled to said plug and configured to couple said optical window deposition shield to at least one of the deposition shield and a chamber wall of the plasma processing system, said flange comprising a first surface, a second surface, and an edge surface, wherein a portion of said first surface comprises a mating surface; and a protective barrier coupled to a plurality of exposed surfaces of said optical window deposition shield, wherein the plurality of exposed surfaces comprise said frontal surface of said plug, said perimeter surface of said plug, and said first surface of said flange excluding said mating surface.