GUO Rong,CHEN Nan,CHEN Lu-jian,WANG Xiao-zhong,CAI Zhi-ping,LI Yan-kai,BU Yi-kun.Novel metal-dielectric metameric optical filters for optical security devices[J].Optoelectronics Letters,2014,10(6):411-414 Novel metal-dielectric metameric optical filters for optical security devices Author Name Affiliation GUO Rong  Department of Electronic Engineering, Xiamen University, Xiamen 361005, China  CHEN Nan  Department of Electronic Engineering, Xiamen University, Xiamen 361005, China  CHEN Lu-jian  Department of Electronic Engineering, Xiamen University, Xiamen 361005, China  WANG Xiao-zhong  Department of Electronic Engineering, Xiamen University, Xiamen 361005, China  CAI Zhi-ping  Department of Electronic Engineering, Xiamen University, Xiamen 361005, China  LI Yan-kai  Energetic Opto Fujian Technology Co.Ltd, Putian 351115, China  BU Yi-kun  Department of Electronic Engineering, Xiamen University, Xiamen 361005, China  Abstract:       Optical security devices play an essential role in the fight against counterfeiting. In this paper, we study and design a pair of metal-dielectric optical filters based on metameric effect, which offer a hidden image effect by the color shift at a specific angle of observation. Compared with all-dielectric multilayer system, the metal-dielectric multilayer structure has larger color shift with varying incident angle, higher color saturation and fewer layers. Finally, the stacks with 5 layers and 7 layers are achieved, and the color difference index is only 0.71, which shows good metameric matching effect. Simultaneously, the sensitivity of filters to deposition errors is analyzed when the thickness deviation is ±2%, and the results show that the two filters have good manufacturability. Hits: 3949 Download times: 0 This work has been supported by the National Natural Science Foundation of China (No.61275050), and the Strategic Emerging Industries Foundation of Fujian Province (No.[2013]609). View Full Text    Download reader