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    • 7. 发明公开
    • MEHRSCHICHTKÖRPER SOWIE VERFAHREN ZUR HERSTELLUNG EINES MEHRSCHICHTKÖRPERS
    • MEHRSCHICHTKÖRPERSOWIE VERFAHREN ZUR HERSTELLUNG EINESMEHRSCHICHTKÖRPERS
    • EP2200841A1
    • 2010-06-30
    • EP08839343.4
    • 2008-10-15
    • OVD Kinegram AG
    • SCHILLING, AndreasTOMPKIN, Wayne, Robert
    • B42D15/00B29D11/00
    • B29D11/0073B29D11/00278B42D25/29B42D2033/24G02B3/0056G02B27/0905G02B27/0961Y10T156/1039
    • The invention relates to a multilayer body (5) and a method for producing a multilayer body (5). The multilayer body (5) has a transparent first layer (51), into which are impressed a multiplicity of cylindrical lenses having 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 coordinate system having a coordinate axis X1, which is determined by the focal point lines of the cylindrical lenses, and a coordinate axis Y1 perpendicular thereto. In a second layer (52), which is arranged below the first layer at a fixed position with respect to the first layer, a multiplicity of microscopic structures in the form of microimages are formed, which are distorted along a longitudinal axis relative to a transverse axis in accordance with a transformation function, and which are arranged in accordance with a microimage grid spanning a second coordinate system having a coordinate axis X2 and a coordinate axis Y2 perpendicular thereto. In a region of the multilayer body in which the microlenses of the microlens grid and the microscopic structures of the microimage grid overlap, the line spacing determined by the spacing-apart of the focal point lines of the cylindrical lenses and the microimage spacing determined by the spacing-apart of the area centroids of the microimages differ from one another by not more than 10%. In order to form the multilayer body (5), the second layer is applied to a third layer, the first layer is arranged above the third layer and the first, second and third layers are laminated together using heat and pressure by means of a tool (41, 42, 43), engaging on the top side of the first layer and the underside of the third layer. In this case, the lens grid is impressed into the surface of the first layer into the top side of the first layers by means of a pressing plate in which the negative form of the lens grid is impressed.
    • 本发明涉及一种多层体及其制造方法。 多层体具有透明的第一层,其中多个长度大于2mm且宽度小于400μm的柱面透镜成形为根据跨越第一坐标系的微透镜网格 具有由柱面透镜的焦点线确定的坐标轴X1和与其垂直的坐标轴Y2。