Patent ID: 7298482
Filing Date: 2007-11-20
Classification: G01B,G03F

Abstract:
1. An exposure apparatus for aligning a reticle and performing exposure using the aligned reticle, said apparatus comprising: a first positioning system having a first stage, a positioning unit adapted to position the reticle mounted on the first stage based on an outer shape of the reticle, and a first image sensing unit adapted to detect a position of a pair of marks patterned on a surface of the reticle positioned by the positioning unit; a second positioning system having a second stage and a second image sensing unit adapted to detect a position of the pair of marks on the reticle mounted on the second stage; and a transfer system adapted to transfer the reticle from the first stage to the second stage, wherein magnification of the second image sensing unit is higher than that of the first image sensing unit.