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Multi-spectrum invisible anti-counterfeiting identifier and detection device thereof, and detection method thereof

A technology of anti-counterfeiting marks and detection devices, which is applied in the field of optical detection, can solve the problems of low anti-counterfeiting level of anti-counterfeiting marks, inability to distinguish anti-counterfeiting marks, high level of anti-counterfeiting, etc., and achieve the effect of not being easy to imitate, easy to miniaturize, and high level of anti-counterfeiting

Pending Publication Date: 2017-12-01
GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, in order to solve the technical problems of low anti-counterfeiting level, easy identification, and easy imitation in the prior art, the present invention proposes a multi-spectral invisible anti-counterfeiting label and its detection device and detection method. The combination of ink and ordinary ink has designed an anti-counterfeiting mark that cannot be distinguished by conventional methods. The anti-counterfeiting level is higher and it is difficult to imitate

Method used

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  • Multi-spectrum invisible anti-counterfeiting identifier and detection device thereof, and detection method thereof
  • Multi-spectrum invisible anti-counterfeiting identifier and detection device thereof, and detection method thereof
  • Multi-spectrum invisible anti-counterfeiting identifier and detection device thereof, and detection method thereof

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Embodiment 1

[0041] Such as figure 2As shown, the present invention provides a multi-spectral invisible anti-counterfeiting mark, including an infrared-absorbing anti-counterfeiting pattern area 1 made of infrared-absorbing ink, a naked-eye visible area 2 made of ordinary ink, and an ultraviolet-excited anti-counterfeiting pattern area 3 made of ultraviolet-excited ink. The infrared absorption anti-counterfeiting pattern area 1 is arranged on the periphery of the multi-spectral invisible anti-counterfeiting mark, the naked eye visible area 2 is arranged inside the infrared absorption anti-counterfeiting pattern area 1, and the ultraviolet excitation anti-counterfeiting pattern area 3 is arranged on the naked eye visible area 2 internal.

[0042] The infrared-absorbing anti-counterfeiting patterns are two-dimensional codes, barcodes, watermarks or glare patterns. The ultraviolet excitation anti-counterfeiting pattern is a general anti-counterfeiting pattern or a pattern with secondary inf...

Embodiment 2

[0049] Such as Figure 5 , Figure 6 As shown, the present invention also provides a detection device for the multi-spectral invisible anti-counterfeiting mark, including a multi-spectral microlens imaging unit 9 and an image analysis unit 10;

[0050] Described multispectral microlens imaging unit 9 comprises multispectral microlens imaging lens, mounting frame, full-spectrum light source, CMOS sensor, focusing mechanism; Multispectral microlens imaging lens is installed on the mounting frame, and the mounting frame is equipped with Spectral light source; CMOS sensor installed on the focusing mechanism;

[0051] The multispectral microlens imaging lens includes four microlenses, and the four microlenses are respectively provided with a red narrow-band filter, a green narrow-band filter, a blue narrow-band filter, and a visible light cut-off filter. Filled with a black light-blocking layer to resist stray light incident from the front, and an optical isolation layer is arran...

Embodiment 3

[0061] Such as Figure 7 As shown, the present invention also provides a detection method of the detection device, comprising:

[0062] S1. Target the naked eye visible area made of ordinary ink, and adjust the focus through the focusing mechanism to achieve the clearest image; the middle naked eye visible area can be observed by the naked eye without special light irradiation;

[0063] S2. After the ultraviolet excitation anti-counterfeiting pattern area made of ultraviolet excitation ink is irradiated with ultraviolet light, the specific pattern composed of red, green and blue colors will appear. After microlens imaging, the red narrow band filter will filter out All other color information, leaving only red information, a blue narrowband filter removes all other color information, leaving only blue information, and a green narrowband filter removes all other color information, leaving only green information ;

[0064] S3. After irradiating the area of ​​the infrared-absor...

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Abstract

The invention discloses a multi-spectrum invisible anti-counterfeiting identifier and a detection device thereof, and a detection method thereof. The multi-spectrum invisible anti-counterfeiting identifier comprises an infrared absorption anti-counterfeiting pattern region made of infrared absorption ink, a macroscopic region made of common ink, and an ultraviolet excitation anti-counterfeiting pattern region made of ultraviolet excitation ink. The detection device is composed of a multi-spectrum micro-lens imaging unit and an image analysis unit; the multi-spectrum micro-lens imaging unit consists of a multi-spectrum micro-lens imaging lens, a mounting bracket, a full-spectrum light source, a CMOS sensor, and a focusing mechanism; the multi-spectrum micro-lens imaging lens is installed on the mounting bracket; the full-spectrum light source is installed on the mounting bracket; and the CMOS sensor is installed on the focusing mechanism. The multi-spectrum invisible anti-counterfeiting identifier has characteristics of good multi-anti-counterfeiting capability, high anti-counterfeiting level, high security and reliability, and good anti-counterfeiting effect. The anti-counterfeiting technique has the important application values in bill, currency, certificate, commodity, military, and security information fields.

Description

technical field [0001] The invention relates to the technical field of optical detection, in particular to a multi-spectrum invisible anti-counterfeiting mark, a detection device and a detection method thereof. Background technique [0002] Anti-counterfeiting technology refers to the measures taken to achieve the purpose of anti-counterfeiting. Anti-counterfeiting technology can accurately identify the authenticity within a certain range, and is not easy to be imitated and copied. Traditional anti-counterfeiting technologies include: laser anti-counterfeiting, one-dimensional / two-dimensional barcode anti-counterfeiting, fluorescent anti-counterfeiting, watermark anti-counterfeiting, etc. These anti-counterfeiting technologies have only one layer of protection, and the difficulty of counterfeiting is low. [0003] Invisible anti-counterfeiting technology is to use some invisible ink to make a certain pattern, or print some codes. Generally, special equipment is needed to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06G06K7/10G09F3/00
CPCG06K7/10732G06K7/10831G06K19/06037G06K19/0614G09F3/0297G06K2019/06225
Inventor 金建邸思陈贤帅袁海
Owner GUANGZHOU INST OF ADVANCED TECH CHINESE ACAD OF SCI
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