Abstract: A system (S) for deflecting an optical radiation beam comprises a first device (D1) for deflecting the input optical radiation beam (B1). The output optical radiation beam (B2) is deflected in a first deflection plane (P1) in the range of the first angle (?1). The system (S) for deflecting the optical radiation beam comprises also a second device (D2) for changing the deflection plane of the output optical radiation beam (B2) at a second angle (?2). After the change of the deflection plane at the second angle (?2) the output optical radiation beam (B2) is deflected in a second deflection plane (P2). The position of the second deflection plane (P2) in respect to the first deflection plane (P1) can be changed, in particular stepwise, by changing the position of the second device (D2) in respect to the first deflection plane (P1).