变色膜是一种随观察角度不同而改变颜色的多层光学薄膜，在防伪领域有着重要的应用。 本工作给出了金属 /介质型变色膜的膜系设计，包括各膜层的最佳厚度或最小厚度要求；针对现行 制备工艺存在的生产周期长、成本高问题，提出了一种制备金属 /介质型变色膜的新工艺—纳米复 合工艺（ NCT），并用 NCT制备了变色膜样品，对样品的结构和光谱进行了测量。使用 NCT，可望大 幅度地降低变色膜的制备成本。
Color Shift Films (CSFs) is a multilayer structure having the intrinsic property of color shift effect, i.e., various color with varing angle of observer. CSFs can be used for anti－ counterfeiting be－ cause the color shift effect cannot be reproduced by the color copiers and color printers. In this paper, the design of metal－ dielectric CSFs is intruduced, the disadvantage of present technology of producing CSFs and relevant products is discussed, and a new technique, named as nano－ composite technique (NCT) is proposed. The structure, mechanical and optical properties of NCT prepared by NCT are in－ vestigated.
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