光安全设备在对伪造的战斗起一个必要作用。在这份报纸,我们学习并且设计光过滤器基于 metameric 完成的一双金属电介质,它在观察的一个特定的角度由颜色移动提供隐藏的图象效果。与所有电介质相比多层的系统,金属电介质多层的结构让更大的颜色与改变事件角度,更高的颜色浸透和少数变层。最后,有 5 层的栈和 7 层被完成,并且颜色差别索引仅仅是 0.71,它显示出匹配效果的好 metameric。同时,当厚度偏差是牥и时,到免职错误的过滤器的敏感被分析
Optical security devices play an essential role in the fight against counterfeiting. In this paper, we study and design a pair of metal-dielectric optical filters based on metameric effect, which offer a hidden image effect by the color shift at a specific angle of observation. Compared with all-dielectric multilayer system, the metal-dielectric multilayer structure has larger color shift with varying incident angle, higher color saturation and fewer layers. Finally, the stacks with 5 layers and 7 layers are achieved, and the color difference index is only 0.71, which shows good metameric matching effect. Simultaneously, the sensitivity of filters to deposition errors is analyzed when the thickness deviation is ±2%, and the results show that the two filters have good manufacturability.