The invention relates to a lighting device (1) having a semiconductor laser device (30) designed to generate a plurality of laser beams (11-16) and at least one optical wavelength conversion element (9) designed to emit a laser beam, At least in proportion to light of other wavelengths; and an optical system designed to steer a laser beam onto a surface (90) of at least one optical wavelength conversion element, wherein the optical system has at least one beam that is capable of oscillating around at least A mirror element oscillating about an axis which is designed to guide a laser beam on atleast one surface section of the surface of the at least one optical wavelength conversion element and wherein the optical system comprises means for collimating the laser beam along a laser beam, (7, 41 to 46, 51 to 56) of the slow axis (SA) and / or the fast axis (FA) of the beam on the surface section of the surface of the at least one optical wavelength conversion element.