SECURITY FEATURE FOR A SECURITY DOCUMENT OR VALUE DOCUMENT, COMPRISING AT LEAST ONE LUMINESCENT SUBSTANCE THAT CAN BE EXCITED IN THE ULTRAVIOLET SPECTRAL RANGE AND EMITS IN THE INFRARED SPECTRAL RANGE
The invention relates to a security feature for a security document or value document, comprising at least one luminescent substance that can be excited in the ultraviolet spectral range and, after excitation has been carried out, emits in the infrared spectral range. The invention further relates t...
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Sprache: | eng ; fre ; ger |
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