Abstract: A method for manufacturing a printed product comprises provision of a matrix comprising a matrix surface having at least one recess. A first curable compound is applied to the matrix surface in a controlled amount that does not exceed a volume of the recess(es). The first curable compound creep down in and partly fill the recess(es), leaving protruding surfaces substantially free from the first curable compound. The matrix surface and recess(es) are covered by a pickup layer of a second curable compound. The matrix is brought in contact with the substrate surface and the first curable compound and the second curable compound are cured. The matrix surface is separated from the substrate surface, leaving the pickup layer and the first curable compound on the substrate surface. The first curable compound forms printed product micro features at the pickup layer covering the substrate surface.

Abstract: A method for manufacturing a printed product comprises provision (210) of a matrix comprising a matrix surface having a plurality of recesses. A first curable compound is applied (212) to the matrix surface to fill the recesses with the compound. The matrix surface and the filled recesses are covered (220) by a pickup layer of a second curable compound. The matrix is brought (230) in contact with the substrate surface and the first curable compound and the second curable compound are cured (232). The matrix surface is separated (234) from the substrate surface, leaving the pickup layer and the first curable compound on the substrate surface. The pickup layer and the first curable compound are thus transferred (240) together from the matrix surface onto a substrate surface of a substrate sheet. The first curable compound forms printed product micro features at the pickup layer covering the substrate surface.

Abstract: A method for manufacturing of a tool for production of synthetic image devices comprises cutting (210) a surface structured plate, giving a respective first and second edge. The plate has geometrical structures—microimages or focusing elements—in a first surface. Cells comprising the geometrical structures have a predetermined period in a first direction. The first edge is brought (212) to face the second edge in a close proximity. The first direction of a first area of the plate adjacent to the first edge is positioned with a predetermined angle with respect to the first direction of a second area of the plate adjacent to the second edge. A relative translation in said same plane between the first edge and the second edge is adapted (214) for bringing a first cell border in the first area to a predetermined distance, relative a corresponding second cell border in the second area. The first and second edges are mutually fixated (216) and mounted (218) onto a cylindrical support.

Abstract: The present invention provides a method of producing a product comprising an array of product features (3) arranged on a surface (7) of a substrate sheet (5), and an arrangement for the production of such products. In this method curable compound (13) is filled into recesses of a matrix (8), pre-cured and then printed onto the substrate sheet (5), thereby forming printed product features (3). These printed product features (3) and additional product features (2) arranged on the opposed side of the substrate sheet (5) may form image objects and focusing elements, respectively, of a synthetic image device. By way of example a cast cure step can be used to form the additional product features (2). Preferably the production of the product is performed in a continuous roll-to-roll process.

Abstract: A method for enabling reading of an optical device that has an array of focusing elements and is configured to provide a synthetic image, comprises arranging (210) of the optical device to obtain a first predetermined shape and controlling (220) of an image plane selector to select an image plane at a first position relative a surface of the optical device. An observable two-dimensional section of the synthetic image taken at the selected image plane is thereby provided. A device for enabling reading of an optical device is also disclosed.

Abstract: The present invention provides a method of producing a two-sided microstructured product and a registration structure that can be used for the method. The method comprises the steps of: (800) providing primary product features (80) at a first surface of a substrate sheet (50); (810) providing secondary product features (90) at an opposed surface; (820) registering the mutual alignment of the primary and secondary product features (80, 90) to estimate alignment parameters; and (830) aligning the provision of primary and secondary product features (80, 90). The registration structure comprises a registration-array of focusing elements (20) at a first surface and a registration-array of reference objects (30) at an opposed surface aligned with primary and secondary product features (80,90) that provides a holographic representation (10) of the reference objects (30) in order to estimate the alignment of product features (80,90).

Abstract: An optical device (10) for providing a synthetic integral image includes a polymer foil stack (111). The polymer foil stack (111) includes at least one polymer foil (11). A first interface (17) of the polymer foil stack (111) includes optically distinguishable image data bearer structures (116). The first interface (17) has a general shape defined by a first array (115) of curved interface portions (117), on which the image data bearer structures (116) are superimposed. Preferably, the optical device (10) includes a second interface (12) of the polymer foil stack (111), which has a second array (13) of microlenses (14). The second interface (12) is provided at a distance from the first interface (17), which distance is close to a focal length of the microlenses (14). The second array (13) is in registry with the first array (115).

Abstract: Methods and devices for angle determination, and retroreflecting foils are presented. A retroreflecting foil (1) is arranged at a surface, an angle of which is going to be determined. The retroreflecting foil has a lens surface with a plurality of spherical microlenses (4) and a reflecting surface with a plurality of spherical mirrors (5) of a second main radius of curvature. The lens surface of the retroreflecting foil is illuminated, and transitions between darkness and light in radiation reflected from the retroreflecting foil, either upon changing a relative angle between the retroreflecting foil and the illuminating light or spatial transitions over the surface of the retroreflecting foil, are observed. An angle measure associated with the transitions is determined. The spherical mirrors present preferably at least one inner point (22) of a spherical mirror surface at which reflection according to the second main radius of curvature is prohibited.