Improved low power therapy laser device (10) comprising a housing (11), a laser light source arranged in the housing (10), a beam expander (18) arranged in the beam path of the laser and diverting lenses (19) in front of the beam expander, and the hollow cavity (20) of the head portion (13) is closed at the front by a transparent closing element (15), wherein in the cavity (20) of the head portion (13) in an even circular distribution at least three lasers (12a, 12b, 12c and in given cases 12d) are arranged, and in front of them respective beam expanders (18a, 18b, 18c and 18d) are arranged, the beam expanders (18a, 18b, 18c and 18d) contact and support each other along respective large surfaces, and the diverting lenses (19) are arranged in an even distribution in front of the beam expanders (18a, 18b, 18c, 18d).
