Angle coder of anti-counterfeiting color in optical micro-mirror arrays
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- 作者：Mei Tang ; Quanlong Miao ; Zhicong Wu ; Xiaosai Wang ; Hu Qian ; Yixin Zhang
- 关键词：Printing micro-mirror array ; Angle coder color ; Anti-counterfeiting ; Optical variable device
- 刊名：Optik - International Journal for Light and Electron Optics
- 出版年：2013
- 出版时间：December, 2013
- 年：2013
- 卷：124
- 期：23
- 页码：6146-6148
- 全文大小：928 K
文摘
Based on the optical characteristics of optical micro-mirror and subtractive color theory, a new anti-counterfeiting model of micro-mirror pixels was established according to the analysis of the connection between the reflective brightness and structural stability. Our results demonstrate that the digital micro-mirror arrays based on the value of CMYKS subtractive color have enough reflected brightness and stability and can be used for anti-counterfeiting optical variable devices when different printing micro-mirror arrays are coded. The variety of optical effects including a security color switch on or switch off have been demonstrated by the use of different black color K or particular color S value. The display angle or orientation of the security color can be set or coded with the different S or K value.