Optically variable security devices

Optically variable security devices

Printing diffraction gratings on paper and board

Printing diffraction gratings on paper and board

Identification medium

Printing diffraction gratings on paper and board

METHOD OF FORMING HOLOGRAM IMAGE, ELECTROSTATIC IMAGE DEVELOPING TONER AND HOLOGRAM IMAGE FORMING APPARATUS

OPTICALLY VARIABLE SECURITY DEVICES

Printing

Ophthalmic device comprising a holographic sensor

DURABLE WASHABLE LABEL HAVING A VISIBLE DIFFRACTION GRATING PATTERN

DURABLE WASHABLE LABEL HAVING A VISIBLE DIFFRACTION GRATING PATTERN

SECURITY ARTICLES AND DEVICES CONTAINING CODED HOLOGRAPHIC PLATELETS AND METHODS OF MANUFACTURING THE SAME

Hologram appearing package image

Anti-counterfeit hologram

Object Having a Holographic Security Feature and Method for Manufacturing Such a Feature

Ophthalmic device comprising a holographic sensor

Sensor with holographic multiplexed image display

Article With Micro Indicia Security Enhancement

Method for manufacturing laser hologram paper

Method of embossing a coated sheet with a diffraction or holographic pattern and coated sheet therefor

Security devices incorporating optically variable adhesive

Adhesive Chromagram And Method Of Forming Thereof

Security printing using a diffraction grating

Authentication recording medium and medium and authentication recording medium producting method

Laser gilding film containing curing coating and manufacture thereof

Optical element and method for the production thereof

Method for manufacturing water-based laser hologram paper

Postprocessing apparatus and postprocessing method

Image formation device and image formation method

Optical information reading device