Projection exposure apparatus with at least one manipulator

US9846367B2 · kind B2 · utility

Assignee

• Carl Zeiss SMT GmbH · DE

Inventors

• Boris Bittner · Roth, DE
• Norbert Wabra · Werneck, DE
• Martin von Hodenberg · Oberkochen, DE

Key dates

• Filing date: Jul 7, 2015
• Grant date: Dec 19, 2017
• Expiry date: Jul 7, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/70891
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A projection exposure apparatus for microlithography includes a projection lens which includes a plurality of optical elements for imaging mask structures onto a substrate during an exposure process. The projection exposure apparatus also includes at least one manipulator configured to change, as part of a manipulator actuation, the optical effects of at least one of the optical elements within the projection lens by changing a state variable of the optical element along a predetermined travel. The projection exposure apparatus further includes an algorithm generator configured to generate a travel generating optimization algorithm, adapted to at least one predetermined imaging parameter, on the basis of the at least one predetermined imaging parameter.