through the concave cylindrical lenses 19 of the first cylindrical lens array 17 by contrast with the component beams 11 12 in accordance with the prior art see fig2 the component beams 23 24 do not pass through the convex cylindrical lenses 21 of the second cylindrical lens array 20 or do so only insubstantially but pass through the expanded concave cylindrical lenses 22 of the second cylindrical lens array consequently the component beams 23 24 of the concave cylindrical lenses 22 of the second cylindrical lens array 20 are deflected in such a way that they are distributed in the operating plane over a wide region in particular over the entire width of the homogenized light field the lateral rises 14 in accordance with the prior art which are to be seen from fig3 are avoided in this way the second embodiment to be seen from fig5 of the device according to the invention also contains a first substrate 26 and a second substrate 27 on its entrance surface the first substrate 26 has a first cylindrical lens array 28 with convex cylindrical lenses 29 and concave cylindrical lenses 30 on its entrance surface that is to say on its.