目的 建立一种光变防伪商标的微镜像素模型。 方法 基于色光反射,利用双余弦函数所构成的微镜曲面,满足反射光亮度和反射光强稳定度的雅可比行列式判据特性。 结果 构建出了适用于商标的 RGBS 结构型印刷防伪微镜模型,模拟并分析了函数表面形状随参数变化的情况。 结论 该模型利用余弦函数的周期性,可通过调节结构参量达到防伪的效果。

Objective To set up a micro-mirror pixelgrams model for anti-counterfeiting in logo printing. Methods Based on the characteristics of double cosine micro-mirror which satisfies Jacobian determinant criterion of the micro surface reflective brightness and reflective stability and also based on light reflection. Results A new kind of RGBS structural printing anti-coun-terfeiting micro-mirror model suitable for logo printing was established. The surface structure of the model function was simulated and analyzed. Conclusion The model utilized the periodicity of cosine function and adjusted the structure parameters to achieve the anti-counterfeiting purpose.