CN105005804A - Highly secure miniature optical label system - Google Patents
Highly secure miniature optical label system Download PDFInfo
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- CN105005804A CN105005804A CN201510404889.4A CN201510404889A CN105005804A CN 105005804 A CN105005804 A CN 105005804A CN 201510404889 A CN201510404889 A CN 201510404889A CN 105005804 A CN105005804 A CN 105005804A
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Abstract
The invention discloses a highly secure miniature optical label system. The system comprises a light source, a light-transmitting substrate and an optical microlense imaging system. A two-dimensional code image is provided on the light-transmitting substrate. The light-transmitting substrate is on an object focal plane of the optical microlense imaging system; light output by the light source is projected to the light-transmitting substrate to generate transmitted light; the transmitted light output as a transmission beam to an external receiving end via the optical microlense imaging system. A novel miniature optical label system is proposed based on a confocal imaging technology. The light source may be an LED, and a size of a miniature two-dimensional code light-transmitting substrate is designed according to optical properties of the optical microlense imaging system and an optical label receiving end such as a mobile phone camera. The miniature two-dimensional code may encrypt contained information by using various methods such as a password based anti-counterfeit method, a software encryption method and the like. Therefore, the miniature optical label design system has extremely high security.
Description
Technical field
The present invention relates to information security technology and micro-optic technical field of imaging, particularly a kind of micro-optical tag system with high security.
Background technology
Along with the development of infotech, the application of various label is ubiquitous, and wherein, bar codes technique and radio frequency automatic identification (RFID) are most widely used.At present, bar codes technique is as a kind of message identification of key and information acquiring technology, development in application process, at the beginning of 20th century 90, people have invented two-dimensional bar code, for storing numeral, word, picture, sound for information about, overcoming the shortcoming that bar code can only store numeral and word, adding information storage, and the feature such as it also has, and information density is high, error correcting capability is strong, strong security, recognition speed are fast.But two-dimensional bar code and bar code have common shortcoming: volume is larger.
In current information society, along with the proposition of Internet of Things concept, RFID label tag application at present based on RFID technique presents lasting ascendant trend, although RFID has the advantages such as information capacity is large, recognition method is efficient and convenient, but, it exists, and cost is high, confidentiality is not strong, is subject to the some shortcomings parts such as electromagnetic interference (EMI).
Summary of the invention
Technical matters to be solved by this invention overcomes the deficiencies in the prior art and provides a kind of micro-optical tag system with high security, the present invention is in conjunction with 2D bar code technology and micro-optic imaging technique, overcome the shortcoming of two-dimensional bar code and RFID, possess that information memory capacity is large, volume is little, security is high and cost is low.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
According to a kind of micro-optical tag system with high security that the present invention proposes, comprise light source, transparent substrates and optical microlens imaging system, described transparent substrates is provided with regular figure; Wherein, described transparent substrates is positioned on the object space focal plane of optical microlens imaging system, produces transmitted light after the light that described light source exports is projected to transparent substrates, and this transmitted light exports transmitting beam to external reception end through optical microlens imaging system.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, described regular figure is two-dimension code pattern.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, described light source is LED.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, the light that described light source exports is bias light.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, in the optical imagery of described optical microlens imaging system, have employed common focusing technology.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, the size of the regular figure on described transparent substrates calculates according to the optical characteristics of optical microlens imaging system, external reception end.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, described external reception end is mobile phone camera.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, described Quick Response Code adopts the method for cipher counterfeit-proof or software cryptography to maintain secrecy to information.
As a kind of further prioritization scheme of micro-optical tag system with high security of the present invention, described information is fingerprint, photo.
The present invention adopts above technical scheme compared with prior art, there is following technique effect: the present invention is in conjunction with 2D bar code technology and micro-optic imaging technique, overcome the shortcoming of two-dimensional bar code and RFID, and possess the advantage of the two simultaneously, as large in information memory capacity, volume is little, security is high, cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of micro-optical tag system.
Fig. 2 is the optical schematic diagram of micro-optical label.
Reference numeral in figure is interpreted as: 1-light source, 2-micro two-dimensional code transparent substrates, 3-optical microlens imaging system, 4-receiving end, the field stop of 5-receiving end.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
As shown in Figure 1, a kind of structural representation with the micro-optical tag system of high security, comprises light source 1, micro two-dimensional code transparent substrates 2, optical microlens imaging system 3.Wherein, light source is bias light, can adopt LED, and information such as fingerprint, photo etc. that micro two-dimensional bar code can adopt cipher counterfeit-proof, software cryptography and utilization to comprise are maintained secrecy.This system is similar to optical sender in radio optical communication system, can be divided into light source, modulator and optical antenna.LED is light source, micro two-dimensional code transparent substrates is modulator, optical microlens imaging system is optical antenna, light is incident upon on micro two-dimensional code transparent substrates by LED light source, light can from clear panel through but cannot black box through, in this way by modulates information to light antenna, optical antenna is transformed into transmitting beam modulated light source output signal again and exports.
Information such as fingerprint, photo etc. that micro two-dimensional bar code can adopt cipher counterfeit-proof, software cryptography and utilization to comprise are maintained secrecy.According to optical microlens imaging system and optical tag receiving end as the optical characteristics of mobile phone camera, the size of design micro two-dimensional code transparent substrates.Micro two-dimensional code transparent substrates is positioned on the object space focal plane of optical microlens imaging system, and micro two-dimensional code transparent substrates is positioned on the image space focal plane of receiving end imaging system at the imaging plane of receiving end.
As shown in Figure 2: a kind of optical schematic diagram with the micro-optical label of high security, the field stop 5 of receiving end passes through optical microlens imaging system 3 formed image planes in object space, receiving end 4, the field stop 5 of receiving end.D1 is the pore size of field stop 5 by optical microlens imaging system 3 imaging face in object space of receiving end, which limit the usefulness the size d2 of micro two-dimensional code transparent substrates, micro two-dimensional code transparent substrates is positioned on the object space focal plane of optical microlens imaging system, so d3 equals the focal length of lenticule imaging system, d4 is the detection range of micro-optical label to receiving end, and d5 is the pore size of the field stop 5 of receiving end.
Select mobile phone camera for receiving end, technical scheme of the present invention is described in further detail: the minimum value of the size d2 of micro two-dimensional code is determined by the pixel of mobile phone camera imageing sensor; Suppose that the objective focal length of mobile phone camera is f ', then based on the theory calculate of Gaussian optics, according to Newton's formula, vertical enlargement formula, the imaging size d2 '=f ' d5/d4 of the size d2 obtaining micro two-dimensional code transparent substrates can be designed.According to the GB/T 18284-2000 in standard QR Code of the People ' the sRepublic of China series of Quick Response Code QR Code, the number of modules of peak capacity edition 40 is 177 × 177.In order to meet the recognition of mobile phone camera, each module at least accounts for four pixels, then mobile phone camera image sensor pixel point is at least (177 × 2) × (177 × 2)=354 × 354=125316.When array size 7176 × 5319 μm, the pixel size 1.8 μm of the mobile phone camera imageing sensor adopted, the minimum dimension of the Quick Response Code code block that can differentiate and identify is 354 × 1.8 μm=0.6372mm.If select precision be the optical plotter of 40 μm to make micro two-dimensional code transparent substrates, the number of modules of micro two-dimensional code is 25 × 25, then micro two-dimensional code code block is of a size of 25 × 40 μm=1mm, is greater than 0.6372mm and meets the demands.
According to the GB/T18284-2000 in standard QR Code of the People ' the s Republic of China series of Quick Response Code QR Code, the number of modules of peak capacity edition 40 is 177 × 177.In order to meet the recognition of receiving end, each module at least accounts for four pixels, then receiving end image sensor pixel point is at least (177 × 2) × (177 × 2)=354 × 354=125316.If when the array size m of the imageing sensor of receiving end × n (μm), pixel size p (μm), then the minimum dimension of the Quick Response Code code block can differentiated and identify is 354 × p (μm).
The invention discloses a kind of micro-optical tag system with high security, its object is in conjunction with 2D bar code technology and micro-optic imaging technique, overcome the shortcoming of two-dimensional bar code and RFID, and possess the advantage of the two simultaneously, as large in information memory capacity, volume is little, security is high, cost is low.The present invention adopts the version of " light source+micro two-dimensional code transparent substrates+optical microlens imaging system ", micro two-dimensional code transparent substrates is positioned on the object space focal plane of optical microlens imaging system, micro two-dimensional code transparent substrates is positioned on the image space focal plane of receiving end imaging system at the imaging plane of receiving end, forms confocal imaging system.Based on the theory calculate of Gaussian optics, according to optical microlens imaging system and optical tag receiving end as the optical characteristics of mobile phone camera, the size of design micro two-dimensional code transparent substrates, micro two-dimensional code can adopt the various method such as cipher counterfeit-proof, software cryptography to maintain secrecy to contained information.The information labels design that the present invention can be high security provides new approaches.So the design system of this micro-optical label has high security, can be information security and a reliable technical thought is provided.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. have a micro-optical tag system for high security, it is characterized in that, comprise light source, transparent substrates and optical microlens imaging system, described transparent substrates is provided with regular figure; Wherein, described transparent substrates is positioned on the object space focal plane of optical microlens imaging system, produces transmitted light after the light that described light source exports is projected to transparent substrates, and this transmitted light exports transmitting beam to external reception end through optical microlens imaging system.
2. a kind of micro-optical tag system with high security according to claim 1, it is characterized in that, described regular figure is two-dimension code pattern.
3. a kind of micro-optical tag system with high security according to claim 1, it is characterized in that, described light source is LED.
4. a kind of micro-optical tag system with high security according to claim 1, is characterized in that, the light that described light source exports is bias light.
5. a kind of micro-optical tag system with high security according to claim 1, is characterized in that, have employed common focusing technology in the optical imagery of described optical microlens imaging system.
6. a kind of micro-optical tag system with high security according to claim 1, is characterized in that, the size of the regular figure on described transparent substrates calculates according to the optical characteristics of optical microlens imaging system, external reception end.
7. a kind of micro-optical tag system with high security according to claim 1, it is characterized in that, described external reception end is mobile phone camera.
8. a kind of micro-optical tag system with high security according to claim 2, is characterized in that, described Quick Response Code adopts the method for cipher counterfeit-proof or software cryptography to maintain secrecy to information.
9. a kind of micro-optical tag system with high security according to claim 8, it is characterized in that, described information is fingerprint, photo.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510404889.4A CN105005804A (en) | 2015-07-10 | 2015-07-10 | Highly secure miniature optical label system |
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| CN201510404889.4A CN105005804A (en) | 2015-07-10 | 2015-07-10 | Highly secure miniature optical label system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004079695A2 (en) * | 2003-03-04 | 2004-09-16 | Lightsmyth Technologies Incorporated | Spectrally-encoded labeling and reading |
| CN101295343A (en) * | 2008-06-19 | 2008-10-29 | 福建鸿博印刷股份有限公司 | Two-dimensional code multi-enciphering anti-fake printing method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004079695A2 (en) * | 2003-03-04 | 2004-09-16 | Lightsmyth Technologies Incorporated | Spectrally-encoded labeling and reading |
| CN101295343A (en) * | 2008-06-19 | 2008-10-29 | 福建鸿博印刷股份有限公司 | Two-dimensional code multi-enciphering anti-fake printing method |
Non-Patent Citations (1)
| Title |
|---|
| 李志鹏等: "集成化微光学标签系统的设计与制作", 《光电技术应用》 * |
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Application publication date: 20151028 |