Optical device, and preferably a security device for a security document, and methods for the production thereof, the device including a diffractive optical element (DOE) including a plurality of subregions, wherein each subregion is configured to produce a projected image corresponding to a frame of an animation, wherein the animation includes both a static component and a variable component, and wherein the sub-regions are arranged such that when the DOE is illuminated by a point light source and moved in at least one direction, the animation is viewable as a projected image.

Optical device, and preferably a security device for a security document, and methods for the production thereof, the device including a diffractive optical element (DOE) including a plurality of subregions, wherein each subregion is configured to produce a projected image corresponding to a frame of an animation, wherein the animation includes both a static component and a variable component, and wherein the sub-regions are arranged such that when the DOE is illuminated by a point light source and moved in at least one direction, the animation is viewable as a projected image.

The present invention relates to an optically variable security element for securing valuable articles, having a substrate having opposing first and second main surfaces and, arranged on the first main surface, an optically variable pattern that comprises an embossing pattern and a coating. The coating comprises at least one imprinted line grid and a background layer that contrasts with the line grid. The embossing pattern comprises a two-dimensional grid of elevated and/or depressed embossing elements. Both are combined in such a way that substantially on every embossing element lies at least one line segment of a line in the line grid, and at least one of the parameters position of the line segment on the embossing element, orientation of the line segment on the embossing element and form of the line segment varies location dependently across the dimension of the optically variable pattern. Due to the line grid, a movement effect, especially a pump or rotation effect, is created when the security element is tilted.

The present invention relates to an optically variable security element for securing valuable articles, having a substrate having opposing first and second main surfaces and, arranged on the first main surface, an optically variable pattern that comprises an embossing pattern and a coating. The coating comprises at least one imprinted line grid and a background layer that contrasts with the line grid. The embossing pattern comprises a two-dimensional grid of elevated and/or depressed embossing elements. Both are combined in such a way that substantially on every embossing element lies at least one line segment of a line in the line grid, and at least one of the parameters position of the line segment on the embossing element, orientation of the line segment on the embossing element and form of the line segment varies location dependently across the dimension of the optically variable pattern. Due to the line grid, a movement effect, especially a pump or rotation effect, is created when the security element is tilted.

Methods for designing and producing a security feature are provided. In general, the present disclosure provides methods of designing a printed image in a security feature, the security feature comprising an array of optical elements overlaying the printed image, wherein the printed image comprises a two dimensional matrix of rows and columns of pixels, the method comprising; correcting for a mismatch between the pixels of the printed image and the array of optical elements by doing one or more of: adding one or more pixels; removing one or more pixels; and moving one or more pixels.

Methods for producing a multilayer body (1), and a multilayer body (1). The method for producing a multilayer body includes: —providing a carrier layer (10); —applying a first replication varnish layer (11) to the carrier layer (10); —molding a plurality of microlenses (12) arranged in the form of a grid into the first replication varnish layer (11a); —applying at least one layer (14) to be structured to the side of the carrier layer (10) opposite the plurality of microlenses; —structuring the at least one layer (14) to be structured using a separate high-resolution mask (23) such that a plurality of microimages (15) arranged in the form of a grid are formed by removal in areas of the at least one layer (14) to be structured. A multilayer body (1) has a carrier layer (10) and a first replication varnish layer (11a), applied to the carrier layer (10), into which a plurality of microlenses (12) arranged in the form of a grid are molded, and with a plurality of microimages (15) arranged in the form of a grid arranged on the side of the carrier layer (10) opposite the plurality of microlenses (12) arranged in the form of a grid.

Methods for producing a multilayer body (1), and a multilayer body (1). The method for producing a multilayer body includes: —providing a carrier layer (10); —applying a first replication varnish layer (11) to the carrier layer (10); —molding a plurality of microlenses (12) arranged in the form of a grid into the first replication varnish layer (11a); —applying at least one layer (14) to be structured to the side of the carrier layer (10) opposite the plurality of microlenses; —structuring the at least one layer (14) to be structured using a separate high-resolution mask (23) such that a plurality of microimages (15) arranged in the form of a grid are formed by removal in areas of the at least one layer (14) to be structured. A multilayer body (1) has a carrier layer (10) and a first replication varnish layer (11a), applied to the carrier layer (10), into which a plurality of microlenses (12) arranged in the form of a grid are molded, and with a plurality of microimages (15) arranged in the form of a grid arranged on the side of the carrier layer (10) opposite the plurality of microlenses (12) arranged in the form of a grid.

A security document, along with its methods of formation, is provided. The security document may include a base sheet, a colored coating on the base sheet, a foil laminate on at least a portion of the colored coating, and an outer lacquer coating over the colored coating such that the foil laminate is embedded between the colored coating and the outer lacquer coating. The outer lacquer coating may include a polymeric resin, and may also include a crosslinking agent and a wetting agent.

A security document, along with its methods of formation, is provided. The security document may include a base sheet, a colored coating on the base sheet, a foil laminate on at least a portion of the colored coating, and an outer lacquer coating over the colored coating such that the foil laminate is embedded between the colored coating and the outer lacquer coating. The outer lacquer coating may include a polymeric resin, and may also include a crosslinking agent and a wetting agent.

This application relates to the technical field of optical films, and discloses a micro-optical imaging film and an imaging apparatus. The micro-optical imaging film includes a body; focusing structures and pattern structures being formed on the body, the focusing structures and pattern structures being adapted to each other, so as to form an image; and e cover structures covering exterior surfaces of at least part of the focusing structures, wherein materials of the cover structures and the focusing structures are different, and a difference between a refractive index of the cover structures and a refractive index of the focusing structures is greater than or equal to 0.05. With the technical solution contained in the embodiments of this application, a capability of the imaging film to resist ambient environmental pollutions may be improved.