APPARATUS AND METHOD FOR AVOIDING A DEGRADATION OF AN OPTICAL USED SURFACE OF A MIRROR MODULE, PROJECTION SYSTEM, ILLUMINATION SYSTEM AND PROJECTION EXPOSURE APPARATUS
Mirror module for a projection exposure apparatus that includes an optical used surface, an optical measurement surface, a measurement apparatus for determining the degradation state of the measurement surface, characterized in that: the mirror module comprises a temperature control apparatus config...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
26.09.2024
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Subjects | |
Online Access | Get full text |
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Summary: | Mirror module for a projection exposure apparatus that includes an optical used surface, an optical measurement surface, a measurement apparatus for determining the degradation state of the measurement surface, characterized in that: the mirror module comprises a temperature control apparatus configured such that the temperature of the optical measurement surface is lower than the temperature of the optical used surface. |
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Bibliography: | Application Number: US202418732005 |