Patent ID: 6072160
Filing Date: 2000-06-06
Classification: C23C,C30B

Abstract:
A thermal heating apparatus for heating a substrate, during rapid thermal processing of the substrate, comprising:a process chamber having a window:at least two radiant energy sources disposed outside of said chamber and positioned adjacent to said window, said radiant energy sources having a central longitudinal axis that extends in a substantially perpendicular direction relative to said window:at least one reflector having a central axis and a first end, said reflector to direct radiant energy from at least one of said radiant energy sources out said first end toward said window; anda specular reflector surface at said first end including a tapered region adjacent to said window to reflect radiant energy from said at least one radiant energy source out of said first end, through said window and onto a substrate in said process chamber to radiate the surface of the substrate to be processed.