光电子快报(英文版), 2014, 10 (6): 411, Published Online: Oct. 12, 2017  

Novel metal-dielectric metameric optical filters for optical security devices

Author Affiliations
1 Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
2 Energetic Opto (Fujian) Technology Co. Ltd, Putian 351115, 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.

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]. 光电子快报(英文版), 2014, 10(6): 411.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!