METHOD FOR AUTHENTICATING PROTECTING MARKING; METHOD FOR MARKING AND AUTHENTICATING PROTECTED DOCUMENTS OR ARTICLES; DEVICE FOR AUTHENTICATING PROTECTED DOCUMENTS OR ARTICLES AND A PROTECTING SYSTEM THAT CONTAINS THE SAID DEVICE

摘要

The invention discloses an improved method and a device implementing said method for the authentication of security documents or articles carrying luminescent marker compounds which show a time-deferred emission characteristic. The method allows a rapid extraction of characteristic luminescence parameters, such as emission intensity and time constants. The method is not sensitive to perturbations by ambient light and reduces the optical filtering requirements.