A diffractive optically variable device. Optical properties of the hologram are defined in terms of diffraction of light going through a diffraction grating. Optical effects occur when changing the angle of observation or illumination. Holograms may contain nano-, microprinting, microimages, covert laser readable images, etc.

Classification of holograms by optical properties:

  • Reflection holograms form an image in reflected light. Aluminum foil or a transparent dielectric which reflects not more than 10-20% of light (transparent hologram) are used as a reflection layer.
  • Transmission holograms form an image in transmitted light.

KINEGRAM® is a patented solution produced by the Swiss manufacturer OVD Kinegram and used for protection of security documents and banknotes.

On our website, we use cookies to collect technical information. In particular, we process the IP address of your location to personalize the content of the site

Cookie Policy rules