Bundesdruckerei Gmbh

Leuchtstoffwerk Breitungen Gmbh

Christian Kunath

Manfred Paeschke

Detlef Starick

Jörg Fischer

Oliver Muth

Roland Gutmann

Wolfgang Kempfert

Jens Ehreke

Michael Knebel

Malte Pflughoefft

Olaf Dressel

Sylke Rösler

Andre Leopold

Sven Rösler

Gerhard Hochenbleicher

André Leopold

Monika Voh

Edward Springmann

Ulrich Bielesch

Detlef Märtens

Per Krüger

Christoph Von Czapiewski

Christian Klepzig

Michael Langgassner

Alexander Mombrée

Andreas Deichsel

Jakob Kuen

Sven Roesler

Roland Heise

Guenter Beyer-Meklenburg

Martin Sprenger

Alexander Ferber

Andreas Bosien

Gunda Müffelmann

Jeffry Gahlbeck

Günter Beyer-Meklenburg

Henrik Ramuta

Florian Uhlig

Cornelia Vandahl

Jeffrey Gahlbeck

Gustav Martin Bartel

Guido HAUßMANN

Andreas Hoppe

Manfred Paschke

Christian Kuhn

Herrmann Hecker

Kay Rossek

Alexander Sprenger

Kathrin Klünder

Daniel Tschakert

Michael Mauderer

Gerasimos Karvounis

Martin Rötzer

Alexander Frank

Michael Langgaßner

In order to increase the security of value or security documents, a multi-luminescent security elementis provided which contains at least one first luminescence meansand at least one second luminescence means. The first luminescence meanscan be excited under first excitation conditions Sp-for the purpose of luminescence, and the second luminescence meanscan be excited under second excitation conditions Sp-for the purpose of luminescence, said second excitation conditions Sp-differing from the first excitation conditions Sp-. The multi-luminescent security elementis additionally equipped with at least one absorber meanswhich prevents an excitation of the at least one first luminescence meansunder the second excitation conditions Sp-for the purpose of luminescence.

Multi-luminescent security element and value or security product containing said security element

The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent phosphor and thus be excited by an electrical field, and this can result in emission of electroluminescent light in the blue and/or green color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range than 345 nm to 370 nm, and can thus emit photoluminescent light in the blue color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 310 nm in 335 nm, and can thus emit photoluminescent light in the green color region of the visible spectrum.

Zinc sulphide phosphor having photo- and electroluminescent properties, process for producing same, and security document, security feature and method for detecting same

A method and a device produce an individualized hologram from a generated light beam. According to the method, the light beam is individually modulated in a spatial light modulator, a holographic recording material is arranged relative to a holographic master, and the individually modulated light beam is guided in such a manner that at least part of the individually modulated light beam is refracted and/or reflected on the holographic master and an interference pattern representing the individualized hologram is produced in the holographic recording material. The individually modulated light beam is displaced relative to the holographic recording material and the holographic master to scan the entire holographic master. The recording material is arranged so as to rest on a cylindrical drum or a cylindrical drum segment and the drum is rotated about a drum axis of the drum or the drum segment during scanning of the holographic master.

Method and device for individual holographic drum exposure

A method produces colored individualized holograms for use as security elements for documents, and to a device for producing individualized holograms. The method generates light formed of different colors, spatially modulates the light, color by color, in an individual manner, optically guides the modulated light such that the light is at least partially refracted and/or reflected on a holographic master and is superposed in a holographic recording material with the modulated non-refracted and/or reflected light, and records the hologram. The light is modulated, color by color and at the same time, by a plurality of spatial light modulators. Every color is associated with its own spatial light modulator and a plurality of monochrome modulated light beams of the plurality of colors is combined in a collinear manner prior to refraction and/or reflection on the holographic master and the superposition in the recording material to give a multicolor exposure light beam.

Method and device for producing colored individualized holograms

Growing community of inventors

Berlin, Germany

Christian Kunath