Apparatus for exciting and receiving infrared printing ink signal and uses thereof

Abstract

The present invention relates to an apparatus exciting and receiving infrared printing ink signal and uses thereof, including a laser emission circuit and a shaping output circuit, wherein, the laser module group of the laser emission circuit is arranged above the article to be identified area containing infrared printing ink, the receiving terminal is arranged beneath the article to be identified, the laser module group is coaxial and confocal to the receiving terminal, the laser beam formed by the laser module group modulation is word line or cross spider, a filtering element is provided between the receiving terminal and the article to be identified, the filtering element is in lightshade buttjunction with the receiving terminal, and signals of the receiving terminal is output by the shaping output circuit. During application, the sensor is mounted in the discriminator, the output of the receiving terminal is respectively connected with genuine-fake indicating lamps and the alarming buzzer through a microprocessor, the opening height of the ingress of the article to be identified of the discriminator is no less than 2cm.

Description

technical field [0001] The present invention relates to a device that uses laser to excite infrared ink to generate optical signal and receives the optical signal and its application, especially a laser beam that is modulated by a laser module to form a word line or cross line to excite infrared ink to generate optical signal. And the coaxial and confocal device of the laser module at the laser transmitting end and the receiving end and its application in the discriminator. Background technique [0002] With the development of laser technology and the application of infrared ink in the field of anti-counterfeiting, the fluorescent signal generated by laser infrared ink is detected by the receiving end, and has been widely used in the authenticity identification of banknotes, certificates and bills. In the device, the emission and reception of the laser are "V"-shaped sensors, and the fluorescent signals generated by the infrared ink excited by the laser are received by the r...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to aim at the Φ1~Φ2 circular bright spots formed on the infrared ink of the measured object by the middle laser in the presence of the currently commonly used laser emission and reception sensors in the shape of a "V". Manually adjust the switchover, and there is a gap between the measured object and the detector or receiving cavity. Generally, objects can only be drawn in the gap, the user can hardly see the detected dot, and it is inconvenient to use and operate, etc. A new signal sensor and its application for laser excitation infrared ink are provided.

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