A device for collimating light emanating from a laser light source, including a laser light source with a plurality of substantially linear emission sources arranged next to each other in at least one row, and collimation means with a plurality of collimation elements which can collimate the light emanating from the emission sources in a direction (X) corresponding to the direction of the row. The device also includes a beam transformer which can respectively transform the light emanating from at least two emission sources in such a way that the light emanating from the at least two emission sources impinges precisely upon a collimation element and is collimated. The invention also relates to a beam transformer for one such device.