Patent ID: 8148663
Filing Date: 2012-04-03
Classification: B23K,G02B

Abstract:
1. An apparatus for thermally processing a substrate, comprising: an energy source that has an output and is adapted to deliver a first energy pulse; a first micro-lens array having a plurality of micro-lenses that are adapted to receive at least a portion of the first energy pulse; a second micro-lens array having a plurality of micro-lenses that are adapted to receive at least a portion of energy transmitted from the first micro-lens array; a first lens that is positioned to receive the at least a portion of the energy transmitted from the micro lenses in the second micro-lens array and transmit the energy received from the second micro-lens array; and a second lens that is positioned to receive the at least a portion of the first energy pulse and cause the image received by two or more micro-lenses in the first micro-lens array to be at least partially different, wherein the second lens is a correction lens adapted to improve the uniformity of the at least a portion of the first pulse transmitted by the first lens.