Described is a multi-layer body for viewing from the front and rear sides in transillumination mode, wherein the multi-layer body (1) comprises one or more transparent first layers (10) and a second layer (14) with a micro-pattern comprising opaque first partial regions and transparent second partial regions. One of the first layers (10) on its surface remote from the second layer (14) has a surface profile forming an arrangement of a plurality of first micro-lenses (12). The thickness of that first layer (1) or that first layer (1) and arranged between that first layer (1) and the second layer (14) one or more further first layers (1) approximately corresponds to the focal length of the first micro-lenses.