公开(公告)号：EP1756649A4

公开(公告)日：2011-05-25

申请号：EP05713481

申请日：2005-02-11

申请人： LASER LOCK TECHNOLOGIES INC

发明人： GARDNER NORMAN A ,  BELL EDWARD H ,  STOVOLD TERRY

IPC分类号： G02B5/22 ,  G02B27/14 ,  G03G21/04 ,  G07D7/12

CPC分类号： B42D15/00 ,  F21V9/00 ,  G03G21/046 ,  G03G2215/00295 ,  G03G2215/00299 ,  G03G2215/00932 ,  G07D7/1205 ,  G09F3/0291 ,  H01J61/327

摘要： A light source is configured to emit narrow peaks at discrete spectral bands, especially primary color wavelengths, added to simulate the effect of a broadband light source. A subject is provided with a pigment, examples being certain rare earth lanthanides, with a strong absorption peak at a corresponding narrow spectral band. The pigment has a nominal hue under true broadband light. When illuminated by the narrow band source, the absorption peak eliminates the contribution of one of the primary colors, producing a distinct shift in hue of the pigmented subject. The change in hue cannot be anticipated from the appearance of illuminated subjects that lack the pigment, which remain normal. The narrow absorption peak is not noticeable under unmatched light sources or true broadband light sources, e.g., sunlight. The hue shift effect is useful for security authentication, informational and decorative applications.

摘要翻译： 光源被配置为发射离散的光谱带，特别是原色波长的窄峰，以模拟宽带光源的影响。 受试者提供颜料，例子是某些稀土镧系元素，在相应的窄光谱带具有很强的吸收峰。 颜料在真正的宽带光下具有标称色调。 当被窄带光源照射时，吸收峰消除了原色之一的贡献，产生着色物体色调的明显变化。 色素的变化不能从缺乏颜料的照明受试者的外观中预期，这些物质保持正常。 在不匹配的光源或真正的宽带光源（例如阳光）下，窄的吸收峰值不明显。 色调偏移效果对于安全认证，信息和装饰应用是有用的。