Patent ID: 9182677
Filing Date: 2015-11-10
Classification: G02B,G03F

Abstract:
1. An optical system configured so that, during use of the optical system, a beam of light passes through the optical system along a path, the optical system comprising: a mirror arrangement comprising a plurality of mirror elements which are adjustable independently of each other to vary an angular distribution of the light reflected by the mirror arrangement; a retarder arrangement configured to at least partly compensate for a disturbance of a polarization distribution that is present outside the optical system; and a polarization influencing optical arrangement downstream of the retarder arrangement, the polarization-influencing optical arrangement configured to set different polarization states over a cross-section of the light beam; and wherein the polarization influencing optical arrangement comprises optical components which are adjustable in their relative position with respect to each other to change an output polarization distribution of the light.