9 September 2015 Research on the high-precision non-contact optical detection technology for banknotes
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The technology of high-precision laser interferometry was introduced for optical measurement of the banknotes in this paper. Taking advantage of laser short wavelength and high sensitivity, information of adhesive tape and cavity about the banknotes could be checked efficiently. Compared with current measurement devices, including mechanical wheel measurement device, Infrared measurement device, ultrasonic measurement device, the laser interferometry measurement has higher precision and reliability. This will improve the ability of banknotes feature information in financial electronic equipment.
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Xiaofeng Jin, Xiaofeng Jin, Tiancai Liang, Tiancai Liang, Pengfeng Luo, Pengfeng Luo, Jianfeng Sun, Jianfeng Sun, } "Research on the high-precision non-contact optical detection technology for banknotes", Proc. SPIE 9598, Optics and Photonics for Information Processing IX, 959816 (9 September 2015); doi: 10.1117/12.2186735; https://doi.org/10.1117/12.2186735

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