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. <EOS>