Abstract: A light detection and ranging system including a mounting connection of a lens system in a mounting structure, including a lens system mounted in the mounting structure, the mounting connection including that the mounting structure includes at least one alignment opening, and the lens system includes a mounting shaft configured to mount the lens system in the mounting structure, wherein the alignment opening laterally surrounds the mounting shaft at least in part spaced apart in an alignment distance from the mounting shaft in the predefined alignment condition; and a spacer configured to span at least in part the alignment distance, wherein the mounting shaft is fixed in the alignment condition in the alignment opening by a first connection that fixes the spacer to the mounting structure, and by a second connection that fixes the spacer to the mounting shaft.