A piecewise light-redirecting surface design method computes optimal weights to form accurate caustic patterns.
Replacing metallic coatings with graphene eliminates corrosion while maintaining electroconductivity and enabling RFID integration.
Lines of weakness in carrier substrates destroy embedded security features when split, preventing reuse of sub-layers for counterfeiting.
Printing overlapping security features on outer layers resolves the trade-off between manipulation resistance and multicolored reproduction capability.
A microoptical system forms a 3D image in the zero diffraction order using multilevel kinoforms and electron beam lithography.
Integrating a transparent layer into opaque openings creates visible security elements that resist tampering while simplifying manufacturing steps.
A one-component adhesive cures under actinic radiation to bond security elements securely.
A digital emergency card system stores and transmits building data to first responders.
Pre-colored microstructures maintain high saturation during laser ablation, resolving low color intensity issues in forged documents.
A grayscale in-plane image intermingled with icon control patterns creates dynamic synthetic magnification through an adjacent lens array.
A numbering printing unit uses offset type wheel engravings to print non-linear character strings on security documents.
A multi-layer security element uses precise lamination of distinct metallic and interference coatings to generate complex visual effects.
A metallized embossed film structure reproduces visible images through varying profiling and diffraction orders.
Segmenting the reflection layer creates a recess free of diffraction structures, resolving optical interference between holograms and UV luminescent imprints.
A production system merges document assembly and foil lamination into a single continuous flow using electromagnetic workpiece carriers.
A thin-film element uses absorber layers with distinct refractive indices to produce angle-dependent color shifts.
Merging angle-dependent color-shifting films with semitransparent layers resolves the trade-off between production complexity and anti-reproduction reliability.
Single-step embossing resolves the contradiction between production speed and register accuracy for security substrates.
Pulsed laser radiation shapes a motif cross-section to demetallize metallic layers beneath microlenses.
Variable reflective layer thickness in dyed areas enables high-quality image reproduction while simplifying manufacturing processes.
Pre-formed grooves on a substrate guide monodisperse particle self-assembly, resolving the trade-off between manufacturing simplicity and crystal uniformity.
A microstructured security element uses a reflective layer to make top-side motifs visible while adding an angle-dependent color effect.
A color barcode encodes biometric data using sub-pixel diffraction patterns to increase storage density.
Invisible graphic pattern on card surface changes appearance under laser personalization, revealing visible defects that prevent fraudulent data overloading.
Nesting inkjet prints inside multilayer films prevents manipulation and enhances optical security against counterfeiting.
Diagonal film web feeding creates a predictable lacquer wedge that resolves uneven coating distribution and improves microstructure registration precision.
Angled micromirror relief structures in a security element equalize background and motif brightness at specific viewing angles, reducing visual distinction.
Dual relief structures with distinct coatings resolve the trade-off between window recognizability and anti-counterfeiting security.
A security element uses register-accurate arrangement of optically variable structures and colored layers to create distinct visual effects.
Local dielectric thickness variation resolves optical appearance inconsistency across microstructured areas.
Front translucent and rear opaque surfaces create a unified see-through image using crosslinked effect pigments.
Segmented embossing creates a raised tactile element supported by a surrounding base, preventing substrate damage while enhancing detectability.
A ghost stereo image overlays a two-dimensional photo on an identity document to enable immediate visual authenticity verification.
Merging magnetic codes into optically variable layers eliminates hiding layers, reducing thread thickness while enhancing counterfeit resistance.
A dual-layer identification document embeds a laser-engraved first personalization layer within the carrier element and applies a second surface layer containing a laser-sensitive additive.
An opacifying layer on a polymer substrate reveals hidden images in transmission, solving the lack of integral watermarking in non-fibrous materials.
A security element combines a colour shift coating with transparent fluorescent features on the same face.
Segmented partial elements align to reveal authenticity, detecting mismatched carrier parts in passports.
A protective layer resolves printed feature degradation and poor image contrast by serving as a primer and contrast-enhancing mediator.
A security sheet integrates distinct device regions with varied optical detection characteristics within a laminated plastic substrate.
A raised elevation on the substrate surface protects protruding electronic components against abrasion and impact forces during handling.
A multilayer optical security film uses structurable layers and reflective dielectric coatings to generate distinct patterns under specific illumination.
A see-through security element uses a luminescent background print and camouflage layer to conceal hidden image information within the visual viewing area.
A security element motif absorbs infrared radiation differently than its marking layer while remaining visually indistinguishable.
A photochemical etching method creates high-resolution metal image patterns using a photosensitive resist system.
Multi-level relief structures with color coatings create distinct optical effects, resolving forgery risks in optically variable security elements.
Solvent washing demetallizes flat carrier zones to create narrow strips between metallized relief areas, achieving sub-10 μm alignment accuracy.
Variable line patterns embed customer data into identification documents to prevent fraud and counterfeiting.
Cutting the tab shorter than the final format preserves sealed end faces, preventing curling and maintaining interface integrity.
A circular production plant moves workpiece carriers along a closed transport route through printing and lamination stations.