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    • 21. 发明授权
    • Multi wavelength excitation/emission authentication and detection scheme
    • 多波长激发/发射认证和检测方案
    • US08840029B2
    • 2014-09-23
    • US13352953
    • 2012-01-18
    • Nabil LawandyAndrei SmukLeif OlsonCharles Zepp
    • Nabil LawandyAndrei SmukLeif OlsonCharles Zepp
    • G06K19/06
    • G01N21/25B42D25/355G01J3/4406G01N21/643G01N2021/6419G07D7/1205
    • A system and method for authentication of secure products is disclosed. The security feature contains a first component in the form of an emitter capable of emitting light in response to external pump light. The security feature also contains a second component in the form of a taggant that absorbs light in a spectrally narrow range compared to the broader excitation spectrum of the first material. In this manner the emitter and taggant work in combination with one another to create an emission response significantly dependent on the illumination wavelengths and unique to the specific combination of the components. The emitter and taggant can be in the form of a mixture. Further the emitter and taggant may be applied in close proximity to one another, such as within two separate coating layers on a suitable substrate.
    • 公开了一种用于认证安全产品的系统和方法。 安全特征包含能够响应于外部泵浦光而发光的发射器形式的第一部件。 安全特征还包含标签牌形式的第二组分,其与第一材料的较宽的激发光谱相比吸收光谱窄范围内的光。 以这种方式,发射器和标签牌彼此组合工作以产生明显取决于照明波长的发射响应,并且对于组件的具体组合是唯一的。 发射体和标记物可以是混合物的形式。 此外,发射器和标签剂可以彼此紧邻地施加,例如在合适的衬底上的两个单独的涂层内。