. . "The beam deflector according to claim 1, wherein the beam deflector is provided for deflecting light of a wavelength (??) which is in a wavelength range of from 0.5 ??m to 3.0 ??m, preferably 1.0 ??m to 2.0 ??m and particularly preferred 1.3 ??m to 1.7 ??m." . .