微透镜阵列动态显示薄膜的设计及制备方法

Design and fabrication method of dynamic display film based on microlens array

基于微透镜阵列和微图形阵列的莫尔动态显示技术能够显示具有立体效果的三维图像。介绍了一种集成于高分子薄膜上的微透镜阵列和微图形阵列的设计及制备方法。提出了动态显示的几何模型,采用该模型推导了动态图像周期、方向及动态效果的设计公式,可以实现上浮、下沉、相对移动等动态显示效果的设计。研究了动态图形的非阵列成像模式,得到了可以随视角变化发生消失、浮现的非阵列动态图形。采用光刻及压印的方法进行了动态显示薄膜的制备实验,结果表明动态图像的周期、方向及位移的测量值相对理论值的最大偏差分别为11%、16%和14%。提出的方法能有效地评估动态显示薄膜的性能及制备容差。

Dynamic display technique based on microlens array and micropattern array can realize three-dimensional image with stereo effect.A design and fabrication method for microlens array and micropattern array integrated on polymer films was introduced.Design formulas for the period,orientation and displacement of dynamic pattern were derived by the proposed moire geometric method.Stereo effects of floating,sinking and relative shifting can be achieved by the proposed method.Aperiodic imaging mode for the dynamic pattern was studied.The aperiodic image that can appear and disappear with view angle varying is obtained.Dynamic displaying films were fabricated using lithography and embossing process,whose period,orientation and displacement were measured,showing their maximum deviations from the theoretical values were 11%,16%and 14%,respectively.The proposed method could be applied for estimating the performance and fabrication tolerance of dynamic displaying films effectively.