| 摘要 |
A catadioptric projection objective for imaging a pattern provided in an object plane of the projection objective onto an image plane of the projection objective has a first, refractive objective part for imaging the pattern provided in the object plane into a first intermediate image; a second objective part including at least one concave mirror for imaging the first intermediate imaging into a second intermediate image; and a third, refractive objective part for imaging the second intermediate imaging onto the image plane; wherein the projection objective has a maximum lens diameter D<SUB>max</SUB>, a maximum image field height Y', and an image side numerical aperture NA; wherein COMP1=D<SUB>max</SUB>/(Y'.NA<SUP>2</SUP>) and wherein the condition COMP1<10 holds.
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