Morpho B.v.

Erik Van Dijk

Jan Van Den Berg

Ronald Rene Ten Velden

Identification structure () with a portrait image () of a holder, the identification structure having a substrate (), a laser sensitive layer () and a lens array () overlying the laser sensitive layer (), the substrate including a printed pattern (), the laser sensitive layer including a laser engraved image pattern (). The laser engraved image pattern forms a three dimensional portrait image (A,B) of the holder and the printed pattern forms a two-dimensional color pattern (C) of the portrait image of the holder, wherein the two-dimensional color pattern (C) and the three-dimensional portrait image (A,B) are adapted to be observed in a superimposed manner.

Security document with a 3D colour photograph

Disclosed is a security document including an image layer with in a first image area an identification image. The document has in a second image area an authentication image that is composed of a first authentication image that is a positive version of the first image and a second authentication image that is a negative version of the first image. The authentication images can be observed at different angles and form a tilt image. Mutual comparison of the positive and negative tilt images and comparison with the identification image provides improved detection of unauthorized alterations.

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Haarlem, Netherlands

Erik Van Dijk