Patent ID: 8922750

Claim:
A magnification adjustable lithographic projection system comprising: a telecentric imaging system having a telecentric object or image space, a deformable plate located within the telecentric object or image space for contributing a limited amount of magnification power to the telecentric imaging system as a function of an amount of curvature of the deformable plate, an actuator that adjusts the curvature of the deformable plate through a range of curvature variation for adjusting a magnification of the imaging system, the deformable plate being a first of a plurality of deformable plates that are deformable through ranges of curvature variation for adjusting a magnification of the imaging system, the first of the plurality of plates being adjustable about a first transverse axis that extends substantially normal to an optical axis of the telecentric imaging system, and a second of the plurality of plates being adjustable about a second transverse axis that extends substantially normal to the optical axis of the telecentric imaging system, wherein the first and second transverse axes extend in parallel for providing a cumulative anamorphic magnification adjustment.