OPTICAL DEVICE WITH WAVEFRONT MODIFIER

摘要

An optical device comprises a wavefront modifier for introducing a wavefront modification in a radiation beam. The wavefront modifier comprises a first optical element (110) and a second optical element (111). The two optical elements are arranged in such a way that a suitable alternative movement of the first optical element leads to a translation of the second optical element by means of a stick-slip effect. This allows obtaining the desired mutual displacement between the two optical elements.