A security document comprising a document body with an upper side and an opposite lower side, wherein the document body has at least one transparent volume region, wherein the at least one transparent volume region extends from the upper side into the interior of the document body, wherein laser-induced microstructures are formed in the interior of the document body, wherein by means of the microstructures at least one micro-lattice structure is formed in the interior of the document body which diffracts light, wherein an opaque layer is formed on a side of the at least one transparent volume region facing away from the upper side of the document body, characterized in that, according to one alternative, the one opaque layer is formed as a reflective layer, which reflects light passing through the at least one volume region and incident on the reflective layer back into the transparent volume region, wherein at least some of the microstructures modify the reflective layer and a micro-lattice structure in the form of a reflection grating is formed thereby by unmodified regions of the reflective layer, and/or, according to another alternative, the document body has, in addition to the at least one transparent volume region opposite the at least one transparent volume region, at least one further transparent volume region extending from the lower side into the interior of the document body, wherein the at least one transparent volume region and the at least one further transparent volume region are separated by the one opaque layer, and wherein laser-induced microperforations, at which transmitted light is diffracted, are formed in the opaque layer at least as a part of the microstructures, wherein the micro-perforations form a transmission grating. document body with an upper side and an opposite lower side, wherein the document body has at least one transparent volume region, wherein the at least one transparent volume region extends from the upper side into the interior of the document body, wherein laser-induced microstructures are formed in the interior of the document body, wherein by means of the microstructures at least one micro-lattice structure is formed in the interior of the document body which diffracts light, wherein an opaque layer is formed on a side of the at least one transparent volume region facing away from the upper side of the document body, characterized in that, according to one alternative, the one opaque layer is formed as a reflective layer, which reflects light passing through the at least one volume region and incident on the reflective layer back into the transparent volume region, wherein at least some of the microstructures modify the reflective layer and a micro-lattice structure in the form of a reflection grating is formed thereby by unmodified regions of the reflective layer, and/or, according to another alternative, the document body has, in addition to the at least one transparent volume region opposite the at least one transparent volume region, at least one further transparent volume region extending from the lower side into the interior of the document body, wherein the at least one transparent volume region and the at least one further transparent volume region are separated by the one opaque layer, and wherein laser-induced microperforations, at which transmitted light is diffracted, are formed in the opaque layer at least as a part of the microstructures, wherein the micro-perforations form a transmission grating.