Measuring method and apparatus, exposure method and...

Details Measuring method and apparatus, exposure method and... Measuring method and apparatus, exposure method and...

2004-12-15

2009-02-24

Kim, Peter B (Department: 2851)

Photocopying

Projection printing and copying cameras

Distortion introducing or rectifying

C355S053000, C355S077000

Reexamination Certificate

active

07495742

ABSTRACT:
A method for measuring an optical performance of a projection optical system in an exposure apparatus that exposes a pattern on a reticle onto a substrate includes the steps of determining an pupil area in the projection optical system, scanning a test reticle or a reference plate, imaging a test pattern on the test reticle or the reference plate onto a surface of the substrate via the pupil area in the projection optical system which has been determined by the determining step, and measuring a positional offset between a predetermined position and an image of the test pattern that has been imaged by the imaging step.

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