Device for beam shaping, comprising - at least two laser-light sources (1a, 1b, 1c) that can emit laser radiation (2a, 2b, 2c), wherein the laser radiation (2a, 2b, 2c) is a single-mode laser radiation, at least in respect of one direction (X, Y) perpendicular to the direction of propagation, - optical means that at least partly superpose and influence the laser radiation (2a, 2b, 2c) of the at least two laser-light sources (1a, 1b, 1c) to the extent that the laser radiation (2a, 2b, 2c) has in a work plane an intensity distribution that at least in respect of one direction (X, Y) perpendicular to the direction of propagation corresponds to a top-hat intensity distribution, characterized in that the optical means comprise a plurality of optically functional transformation interfaces (5a, 5b, 5c), wherein the laser radiation (2a, 2b, 2c) from each of the laser-light sources (1a, 1b, 1c) is associated with one of the transformation interfaces (5a, 5b, 5c) such that in each case the laser radiation (2a, 2b, 2c) of one of the laser-light sources (1a, 1b, 1c) can pass through the associated transformation interface (5a, 5b, 5c) such that it has a top-hat angle distribution at least in respect of one direction (X, Y) perpendicular to the direction of propagation, after the transformation, wherein the optical means comprise lens means in a Fourier arrangement, which lens means superpose the laser radiation (2a, 2b, 2c) of the at least two laser-light sources (1a, 1b, 1c), wherein the lens means are arranged downstream of the plurality of transformation interfaces (5a, 5b, 5c), in the direction of propagation of the laser radiation (2a, 2b, 2c) to be influenced. - at least two laser-light sources (1a, 1b, 1c) that can emit laser radiation (2a, 2b, 2c), wherein the laser radiation (2a, 2b, 2c) is a single-mode laser radiation, at least in respect of one direction (X, Y) perpendicular to the direction of propagation, - optical means that at least partly superpose and influence the laser radiation (2a, 2b, 2c) of the at least two laser-light sources (1a, 1b, 1c) to the extent that the laser radiation (2a, 2b, 2c) has in a work plane an intensity distribution that at least in respect of one direction (X, Y) perpendicular to the direction of propagation corresponds to a top-hat intensity distribution, characterized in that the optical means comprise a plurality of optically functional transformation interfaces (5a, 5b, 5c), wherein the laser radiation (2a, 2b, 2c) from each of the laser-light sources (1a, 1b, 1c) is associated with one of the transformation interfaces (5a, 5b, 5c) such that in each case the laser radiation (2a, 2b, 2c) of one of the laser-light sources (1a, 1b, 1c) can pass through the associated transformation interface (5a, 5b, 5c) such that it has a top-hat angle distribution at least in respect of one direction (X, Y) perpendicular to the direction of propagation, after the transformation, wherein the optical means comprise lens means in a Fourier arrangement, which lens means superpose the laser radiation (2a, 2b, 2c) of the at least two laser-light sources (1a, 1b, 1c), wherein the lens means are arranged downstream of the plurality of transformation interfaces (5a, 5b, 5c), in the direction of propagation of the laser radiation (2a, 2b, 2c) to be influenced.