Patent ID: 8514492

Claim:
A multilayer body having a transparent first layer in which a multiplicity of microlenses is shaped, and a second layer which is arranged beneath the first layer in a fixed position relative to the first layer and which has a multiplicity of microscopic structures, wherein the microlenses are cylindrical lenses of a length of more than 2 mm and a width of less than 400 μm which are arranged in accordance with a microlens grid spanning a first co-ordinate system having a coordinate axis X 1 which is determined by the focal point lines of the cylindrical lenses and a co-ordinate axis Y 1 which is different in relation thereto, the microscopic structures are in the form of microimages distorted along a transverse axis with respect to a longitudinal axis in accordance with a transformation function and the microscopic structures are arranged in accordance with a microimage grid spanning a second co-ordinate system having a co-ordinate axis X 2 and a co-ordinate axis Y 2 , which is different in relation thereto, and the microlenses of the microlens grid and the microscopic structures of the microimage grid are in superposed relationship in a superposed region of the multilayer body, and wherein the microlenses have a line spacing determined by the spacing of the focal point lines of the cylindrical lenses, and the microimages have a microimage spacing, which is determined by the spacing of the centroids of the microimages, and wherein the co-ordinate axis Y 1 and the co-ordinate axis Y 2 as well as the co-ordinate axis X 1 and the co-ordinate axis X 2 are respectively oriented in mutually parallel relationship in the superposed region of the microlens grid and the microimage grid, and wherein the line spacing of adjacent microlenses differs from the microimage spacing of adjacent microscopic structures in the superposed region, the difference being less than 10%.