Patent ID: 7045746
Filing Date: 2006-05-16
Classification: F27B,F27D,H01L

Abstract:
1. In a system for processing a workpiece by applying controlled heat thereto, an apparatus comprising: a heating arrangement defining a heating plane using an array of heating elements in a confronting relationship with said workpiece to subject the workpiece to a direct radiation that is produced by the heating arrangement; a segmented radiation shield including a plurality of segments supported for movement at least partially through said heating plane between (i) retracted positions, in which said direct radiation is allowed to reach said workpiece and (ii) extended positions, in which the plurality of segments cooperate in way which serves to at least partially block said direct radiation from reaching the workpiece such that at least certain ones of said segments move between adjacent ones of the heating elements in moving between said retracted positions and said extended positions; and means for moving the plurality of segments between the retracted positions and the extended positions.