Machine readable record carrier with hologram

Master hologram for the production of copy-proof holograms

Master hologram for the production of copy-proof holograms

Method for calculating and producing a computer-generated...

Method for producing holographic optical element comprising...

Method for production of documents with a hologram and a...

Method for using a deep image hologram as a security device...

Method of legitimate product identification and seals and identi

Method of preventing forgery of diffraction grating pattern and

Method of printing security documents

Method of reading hologram information

Monochromatic-light reproduction type hologram, and method and a

Multi-layer hologram label

Multiply recorded hologram for security