Patent ID: 8854606

Claim:
A projection exposure system, comprising: a light source configured to produce light in the EUV region; a first optical system configured to illuminate a mask by the light of the light source; and a second optical system configured to image the mask on a structural member; wherein: at least one polarization-optical element for the EUV region is disposed in a beam path between the light source and the structural member; the polarization-optical element comprises a first cone element and a reflective component; the first cone element has an outer cone surface which is reflective for at least a given polarization component of the EUV light incident under an angle of inclination α to the axis of rotational symmetry of the outer cone surface in a region of inclination angles α between 0° and a maximum angle of inclination such that the outer cone surface has a polarizing effect; and the reflective component is configured to bundle the EUV light reflected from the outer cone surface of the first cone element.