Patent ID: 6858853
Filing Date: 2005-02-22
Classification: B82Y,G02B,G03F,G21K

Abstract:
1. An illumination system, particularly for microlithography with wavelengths≦193 nm, comprising: a primary light source ( a first optical component; a second optical component ( an image plane ( an exit pupil ( wherein said first optical component transforms said primary light source ( wherein said first optical component includes a first optical-element having a plurality of first raster elements ( wherein said first optical component comprises a collector unit ( said illumination system further comprising: a first optical axis ( a second optical axis ( a third optical axis ( wherein the directional vector ( wherein said first and second optical elements are tilted to cause a crossing or the projection of said third optical axis ( second optical element, wherein said second optical element is reflective; and a third optical axis ( wherein the directional vector ( wherein said first and second optical elements are tilted to cause a crossing of the projection of said third optical axis (