Patent ID: 8400618
Filing Date: 2013-03-19
Classification: G02B,G03F

Abstract:
1. A method for mounting an optical module in a projection exposure system for microlithography comprising: providing a measuring apparatus, which is external to the projection exposure system, with an irradiation system for irradiating the optical module with electromagnetic radiation, a reference component and a detection element defining a detection surface, the detection element being disposed in a defined position in relation to the reference component, disposing the optical module in a position in the measuring apparatus such that the radiation emitted by the irradiation system passes through the optical module and impinges onto the detection surface as an exit beam, measuring a position of the exit beam in relation to the detection surface, adjusting the position of the optical module within the measuring apparatus, wherein said adjusting comprises bringing the position of the exit beam in relation to the detection surface to correspond to a predetermined position, and establishing position parameters defining the position of the optical module in relation to the reference component and mounting the optical module into the projection exposure system using the established position parameters.