Wolfgang Rauscher

Value document with luminescent properties

Security unit e.g. seal, for e.g. valuable document, has motive image with planar periodic arrangement of micro motive units, and periodic arrangement of lens for moire magnified observation of motive units

Method and apparatus for determining the state of bank notes

Sicherheitselement zur Absicherung von Wertdokumenten

Method and device for determining banknote state

Optically variable diffraction structure, and method for the production thereof

Method for the creation of a planar or curved grid image, and object comprising a grid image

Coding system for security documents

Process for producing a planar or curved grid image comprises defining an orientation for the grid image in space in which an image is to be visible, defining a color for each image region of each image area, and further processing

Sensor for checking value documents