Sicpa Holding Sa

Philipp Egger

Edgar Muller

Myron Seto

Pierre Degott

Andrea Callegari

Todor Dinoev

Edgar M&uuml;ller

Edgar MÜLLER

An optical security element made of a refractive transparent or partially transparent optical material and comprising an optical assembly of a caustic layer having a light-redirecting surface with a relief pattern of given depth and a focal length fand an adjacent lens element of focal length fconfigured to redirect incident light received from a point-like light source through it and to form a projected image containing a caustic pattern directly on a retina of an observer. A marked object, as well as a method of visually authenticating an object, and use of optical security elements for authenticating or securing against counterfeiting are also disclosed.

Optical security elements, marked object, method of authenticating an object and use of optical security elements for authenticating or securing against counterfeiting

The invention refers to a measurement probe for measuring magnetization data of at least one item (), specifically a security document comprising at least one magnetic security material (M), said measurement probe comprising at least one core free magnetizing coil () characterized in that at least two magnetic field sensors () are disposed at both ends inside said coil () at its both ends. The invention relates further to an authentication device comprising said measurement probe and to an authentication method carried out by means of said measurement probe and authentication device.

Measurement probe and authentication device comprising the same

A luminescent probe marking is excited with at least one excitation pulse of at least one excitation source. The probe intensity values of emission intensity from emission radiation of the luminescent probe marking are measured in response to the excitation pulse(s) at time intervals. A probe intensity-versus-time emission function is formed of the probe intensity values, and the probe intensity-versus-time emission function is compared with at least one reference intensity-versus-time emission function after the probe intensity-versus-time emission function and the reference intensity-versus-time emission function have been normalized.

Method, device and security system, all for authenticating a marking

The present invention relates to coating compositions, preferably printing inks for security applications comprising at least one organic resin, at least one pigment and optionally at least one organic solvent. Said pigment comprises glass ceramic composite particles, containing at least one crystalline particle embedded in a glass matrix. Said glass ceramic particles have a particle size in the range of between 0.1 &mgr;m to 50 &mgr;m. Preferably active ions selected from the group of the rare-earth elements are incorporated into the crystalline phase of the composite to provide the glass ceramics with luminescent up- and down-converting characteristics. Glass ceramic luminescent have excellent physical and chemical stability. The glass matrix permits as well the stabilization of the photophysically interesting halide host crystals which have low phonon energies. Such materials provide unusual excitation and emission properties.

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Lausanne, Switzerland

Philipp Egger