Attachment optics for a light source for generating a branched luminous surface, which attachment optics comprise at least one plurality of light-conducting optical elements, wherein each light-conducting optical element comprises *a light inlet area, *a light exit area and *a jacket surface, wherein the jacket surface connects the light entry region and the light exit region, and connects the light exit region is opposite the light entry region and is associated with a light exit surface, which light exit surface is bounded by a circumferential boundary line, the boundary line being adjacent to the light exit region, and the optical elements are lined up in such a way that the light exit surfaces of all optical elements lie in a common substantially planar area, each optical element having a number of nearest neighbors and its boundary line having a number of portions (7a, 7b) which are each associated with a portion of the boundary line of a nearest neighbor, wherein mutually associated portions (7a, 7b) are adjacent to one another and have mutually corresponding curves, wherein the optical elements arranged in a row form a chain, wherein each optical element (2d, 2a') with respect to its adjacent optical elements (2c, 2e; 2a', 2b') is at predetermined angles (a1, a2; β1, β2), characterized in that the jacket surface has a number of regions which are each assigned to a region of the jacket surface of a nearest neighbor, regions assigned to one another being adjacent to one another and having mutually corresponding surface profiles, it being provided that - at each jacket surface one or more recesses are provided, and at least one portion (7a, 7b) is arcuate and thereby curved inwardly towards the light emitting surface, wherein all optical elements are formed substantially identically, wherein preferably an adhesive layer is provided between the optical elements arranged in a row, which adhesive layer connects each optical element to its nearest neighbors. *a light inlet area, *a light exit area and *a jacket surface, wherein the jacket surface connects the light entry region and the light exit region, and connects the light exit region is opposite the light entry region and is associated with a light exit surface, which light exit surface is bounded by a circumferential boundary line, the boundary line being adjacent to the light exit region, and the optical elements are lined up in such a way that the light exit surfaces of all optical elements lie in a common substantially planar area, each optical element having a number of nearest neighbors and its boundary line having a number of portions (7a, 7b) which are each associated with a portion of the boundary line of a nearest neighbor, wherein mutually associated portions (7a, 7b) are adjacent to one another and have mutually corresponding curves, wherein the optical elements arranged in a row form a chain, wherein each optical element (2d, 2a') with respect to its adjacent optical elements (2c, 2e; 2a', 2b') is at predetermined angles (a1, a2; β1, β2), characterized in that the jacket surface has a number of regions which are each assigned to a region of the jacket surface of a nearest neighbor, regions assigned to one another being adjacent to one another and having mutually corresponding surface profiles, it being provided that - at each jacket surface one or more recesses are provided, and at least one portion (7a, 7b) is arcuate and thereby curved inwardly towards the light emitting surface, wherein all optical elements are formed substantially identically, wherein preferably an adhesive layer is provided between the optical elements arranged in a row, which adhesive layer connects each optical element to its nearest neighbors. - at each jacket surface one or more recesses are provided, and at least one portion (7a, 7b) is arcuate and thereby curved inwardly towards the light emitting surface, wherein all optical elements are formed substantially identically, wherein preferably an adhesive layer is provided between the optical elements arranged in a row, which adhesive layer connects each optical element to its nearest neighbors.