METHOD OF DETECTING CONCEALED PATTERN

A method for detecting a component including a concealed pattern includes: detecting infrared electromagnetic radiation reflected or emitted by a component including a first pattern, the component including: a substrate; the first pattern disposed over at least a portion of the substrate; an optional primer layer disposed between at least a portion of the substrate and at least a portion of the first pattern; and a first visibly opaque layer including an infrared transparent pigment, the first visibly opaque layer disposed over at least a portion of the first pattern; and comparing the reflectivity and/or absorbance of infrared electromagnetic radiation by the first pattern at one wavelength to the reflectivity and/or absorbance by the primer layer and/or the substrate at the same wavelength. 一种检测包含隐藏图案的部件的方法包含：检测由包含第一图案的部件反射或发射的红外电磁辐射，所述部件包含：衬底；第一图案，设置在衬底的至少一部分之上；任选的底漆层，设置在衬底的至少一部分和第一图案的至少一部分之间；和包含红外透明颜料的第一可见不透明层，所述第一可见不透明层设置在第一图案的至少一部分之上；和将第一图案在一个波长下对红外电磁辐射的反射率和/或吸收率与底漆层和/或衬底在相同波长下的反射率和/或吸收率进行比较。