A main object of the present invention is to provide a method of producing a volume hologram laminate which can regenerate a hologram image in an arbitrary wavelength by a simple process. To attain the object, the present invention provides a method of producing a volume hologram laminate using a volume hologram forming substrate which comprises: a substrate, a volume hologram layer formed on the substrate and containing a photopolymerizable material, a resin layer, formed on the substrate so as to contact to the volume hologram layer, containing a resin and a polymerizable compound, characterized in that the producing method comprises processes of: a hologram recording process to record a volume hologram to the volume hologram layer, a substance transit process of transiting the polymerizable compound to the volume hologram layer, and an after-treatment process of polymerizing the polymerizable compound.

Provided are diffraction structure transfer foil that further improves usefulness of the diffraction structure transfer foil in authenticity determination by allowing a greater variety of diffracted-light patterns to be observed, and a forgery prevention medium using the diffraction structure transfer foil. The diffraction structure transfer foil (21) includes a transfer foil substrate (1), a peeling-off protective layer (2) that is laminated on one surface of the transfer foil substrate (1), a laminated body for diffracted-light delivery (13a) that is laminated on the peeling-off protective layer (2), and an adhesive layer (9) that is laminated on the laminated body for diffracted-light delivery (13a). The laminated body for diffracted-light delivery (13a) includes a diffraction structure forming body in which a plurality of diffraction structures (4 and 7) are formed, and a reflective layer (5a or 8a) that is formed in accordance with each of the plurality of diffraction structures (4 and 7). A transmission density of one reflective layer (5a) of the plurality of reflective layers (5a and 8a) is in a range of 0.01 to 0.9, and a transmission density of the other reflective layer (8a) is 1.0 or greater.

The invention relates to polycarbonate-based or copolycarbonate-based security documents and/or documents of value which contain at least one hologram integrated in the card body, and to a method for producing such security documents and/or documents of value.

The present disclosure provides a volume hologram laminate comprising a substrate, and a volume hologram laminate portion placed on one surface of the substrate, wherein the volume hologram laminate portion includes, from a substrate side, a resin layer including transparent resin; an inhibiting layer placed in a pattern form, in contact with the resin layer; and a volume hologram layer, on which an interference fringe is recorded, placed in contact with the resin layer and the inhibiting layer, in this order, and an inhibiting layer-formed region including the inhibiting layer and an inhibiting layer-non-formed region including no inhibiting layer differ in a color of a reproduction image from the volume hologram layer.

A system for generating variable optical images in curable material using generic optical matrices, the system including an applicator configured to apply the curable material to a portion of a substrate supported by a carrier web; a transparent roller comprising surface elements formed on an outside surface of the transparent roller, the transparent roller being configured to form optical structures in the curable material, wherein the surface elements on the transparent roller form the optical structures in the curable material when the surface elements contact the curable material as the substrate travels over the outside surface of the transparent roller; a radiation source within or outside the transparent roller configured to cure the curable material after the optical structures are formed in the curable material; and an image generation component configured to obliterate portions of the optical structures to form a predetermined image.

Provided is a display medium configured to allow for intended drawing. The display medium includes a first recording layer capable of performing recording with a first laser beam having a first peak wavelength and a second recording layer capable of performing recording with a second laser beam having a second peak wavelength. The first recording layer and the second recording layer employ different recording methods.

A laminated pane includes an outer pane having an outer surface and an interior surface, an inner pane having an outer surface and an interior surface, a first intermediate layer, and a hologram element having at least one hologram, wherein the first intermediate layer is arranged between the outer pane and the inner pane, the hologram element is arranged between the outer pane and the first intermediate layer or between the inner pane and the first intermediate layer, and wherein a UV protection layer is arranged on the interior surface of the outer pane.

A method for replicating a hologram in a light-sensitive composite web comprises providing a master element comprising a substrate body and at least one master hologram, applying a light-sensitive composite web on a surface of the master element, exposing the master element in order to replicate the at least one master hologram into the light-sensitive composite web and detaching the exposed composite web from the master element. The method also comprises the temporary application of an optical adhesive film between the light-sensitive composite web and the surface of the master element. The optical adhesive film imparts optical contact between the master element and the light-sensitive composite web during the exposure. Another method for replicating a hologram in a light-sensitive composite web comprises using an input coupling element, wherein an optical adhesive film is introduced between the composite web and the input coupling element.

A laminated pane includes first and second panes, a layer stack arranged therebetween including a first thermoplastic intermediate layer, a separating layer, a photopolymer layer with at least one holographic element, a carrier layer, and a second thermoplastic intermediate layer, wherein the photopolymer layer has a thickness of 5 m to 50 m, the carrier layer contains polyethylene terephthalate (PET), polyethylene (PE), polymethyl methacrylate (PMMA), polycarbonate (PC), polyamide (PA), polyvinyl chloride (PVC), and/or cellulose triacetate (TAC) and has a thickness of 20 m to 100 m, wherein the carrier layer is arranged directly adjacent the photopolymer layer, and the separating layer contains polyethylene (PE), polyvinyl chloride (PVC), and/or polymethyl methacrylate (PMMA) and has a thickness of 10 m to 300 m.

A device for continuously replicating a hologram has a coating module to coat a liquid photopolymer onto a first carrier film, a lamination module to apply a second carrier film to the first carrier film coated with the photopolymer to obtain a photopolymer composite including a liquid photopolymer layer between two carrier films, an exposure module having a light source, and a master element with a master hologram to be replicated, and a fixing module to cure the replicated hologram in the photopolymer composite. The master element is axially rotatably mounted, and the exposure module is designed to bring the photopolymer composite in optical contact with the master element, while the light source exposes the master hologram to obtain a replicated hologram in a region of the photopolymer composite.