Abstract:
PROBLEM TO BE SOLVED: To provide a projector which is used in a lithographic apparatus, etc., and improved so as to form almost all intensity distributions required for a projection beam. SOLUTION: A lithographic projection apparatus has an emission system (32, 33, and 16). Auxiliary beams of an incident projection beam are reflected in directions which can be controlled individually by a plurality of orienting members (33a-33e). All spatial intensity distributions required for the projection beam can be formed in a cross-sectional plane by a re-orienting optical apparatus (16).
Abstract:
A two-stage homogenizer comprising a first homogenizer stage and a second homogenizer stage. The first homogenizer stage includes a pair of microlens arrays and associated focusing optics. The second homogenizer stage includes a second pair of microlens arrays and associated focusing optics. The second homogenizer stage is positioned to receive radiation which is output from the first homogenizer stage.