透明全息防伪薄膜光学性质研究  

Optic Properties of Transparent Hologram Anti-Fogery Film

作　　者：倪星元[1] 张志华[1] 魏建东[1] 徐平[1] 秦仁喜[1] 沈军[1] 周斌[1] 吴广明[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《材料导报》2004年第7期5-7,11,共4页Materials Reports

基　　金：国家自然科学基金(20133040);国家高科技863计划(2002AA842052);上海市重点学科;上海市科委中法合作项目;上海市纳米科技与产业发展中心基金项目

摘　　要：一种透明全息防伪薄膜,在透明的同时反射全息图像。用全息摄影、激光雕刻和电铸手段,以光栅条纹的形式记录和制备金属模版。热压具有纳米结构的 TiO_2信息层,再现全息图像。用溶胶-凝胶方法制备信息层,选择合适的前驱体、催化剂、热处理条件使折射率≥1.8。据光学匹配原理设计膜系,信息层/基底层厚度分别为≥0.3μm和≥10μm。正弦波状光栅,深度0.1μm。在视角≥60再现的全息图像最清晰。The paper introduces an anti-fogery film whose hologram pattern is shown on the plastic filmwhen changing the view with the film remaining the transmitter.Hologram photograph taken by laser and to be copedin a nicked die by electroform.The hologram was coated with a sol-gel TiO_2 coating on the plastic by Ni die.The opticproperties of film were influenced by precursor,catalyst,heat treatment time and heat treatment temperature.The filmstructure is TiO_2/plastic with transparent>90%.The TiO_2 coating's thickness and refractive was 0.3μm and 1.8respectively,and the plastic's thickness was 10μm.The grating was sine wave and depth was 0.1μm.The diffractionefficiency is increased with incident angle≥60.

关 键 词：全息 防伪 薄膜 光学性质 溶胶-凝胶 

分 类 号：TB877.1[一般工业技术—摄影技术]