CN2575702Y - Low noise, high-gain, high flatness long wave band erbium-doped optical fibre amplifier - Google Patents
Low noise, high-gain, high flatness long wave band erbium-doped optical fibre amplifier Download PDFInfo
- Publication number
- CN2575702Y CN2575702Y CN 02279715 CN02279715U CN2575702Y CN 2575702 Y CN2575702 Y CN 2575702Y CN 02279715 CN02279715 CN 02279715 CN 02279715 U CN02279715 U CN 02279715U CN 2575702 Y CN2575702 Y CN 2575702Y
- Authority
- CN
- China
- Prior art keywords
- semi
- counterfeiting mark
- holographic anti
- utility
- holographic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a spectral change identifying apparatus for a holographic anti-counterfeiting mark, which comprises a detecting hole (9), a semi-transparent semi-reflective mirror (8), an imaging ground-glass plate (10), a light system (11), and an area array probe (5) which are sequentially positioned at the same light path, wherein, a laser source (7) is positioned under the semi-transparent semi-reflective mirror (8), and a micro-computer intelligent reading system (6) is connected with the area array probe (5). Hidden information is arranged in the holographic anti-counterfeiting mark in a spectral change method. After laser beams are irradiated, a photoelectric probe is used for detecting at some special spaces; apparatuses are used for automatically identifying to judge the true and false of the holographic anti-counterfeiting mark. The utility model adopts a machine to identify the holographic anti-counterfeiting mark, so the utility model has the advantages of high resolution, convenient operation, etc.
Description
Technical field
The utility model belongs to the antiforge laser holographic technology, is specifically related to a kind of spectral transformation identifier of holographic anti-counterfeiting label.
Background technology
The false proof of vital document, Card with value and product is the problem that national government department and production firm pay much attention to.Because personation is a kind of sudden huge profits trade, the fast development of reinforcement, international trade day by day of global economic integration in addition, counterfeit behavior also spreads unchecked thereupon.Not only in developing country, and in developed country, the activity of forgery and illegal imitation of brand-name products is all very rampant.In order to contain the forgery and illegal imitation of brand-name products activity effectively, the false proof means of various hi-techs are constantly emerged in large numbers.The antiforge laser holographic technology that the early 1990s develops rapidly and just plays an important role in the false proof industry of China.Though occurred many new false proof means in recent years, for example code anti-fake, super (heavy particle imaging) are false proof, nuclear track anti-counterfeit, the biological anti-counterfeiting technology of DNA etc., but because the sort of lifelike visual effect that hologram had, when playing anti-fake effect, also can show a kind of artistic charm of uniqueness; Add present high-performance, coming into operation of high-resolution laser dot-matrix hologram device, in hologram, be provided with and hide Info and to carry out the technology of interpretation with mechanical recognition system perfect day by day, and the integrated anti-counterfeit thinking that adopts other type in the holographic false proof pattern simultaneously proves effectively day by day, holographic security technology self is also promptly updating, make holographic security technology in many anti-counterfeiting technologies, remain to hold a safe lead, particularly at the file security that guarantees state administration law enforcement agency, important effect has been brought into play in the aspects such as forgery personation of the containment tax and sale monopoly field and financial institution's Card with value.At present, the development of antiforge laser holographic technology concentrates on two aspects: the one, with laser hologram as carrier, introduce various technology so that obtain certain special visual effect, effort in this respect is referred to as DOVDs (diffraction Optical Variable Devices), comprising 2D/3D holograms, Dot-matrix holograms, Holographic stereograms, Diffraction gratings, Excelgrams, Pixelgrams, and Anything else that diffracts light from a surfacereliefstructure; The 2nd, adopt various image process method, the fine structure of laser holographic anti counterfeiting label or hiding information are discerned the true and false with discrimination flag, be referred to as " machine-readable " technology usually.
Increasing the variations in detail of hologram and the complicacy of DOVDs only can make distinguishing of naked eyes difficult more.For non-professional personnel, hologram is very exquisite and complicated.Although it is impossible will duplicating a width of cloth hologram fully in theory, in fact require a common clerical worker or consumer only to distinguish that with visual inspection the true and false of hologram is inappropriate.Therefore, allow hologram and corresponding D OVDs take on false proof important task better, a kind of means that simply distinguish the true from the false fast, the purpose that Here it is adopts " machine-readable " technology to reach are provided just must for staff or consumer.
At present, the machine-readable system that actual use can be provided is normally according to the distinctive mark with readable nature that is provided with in the hologram and custom-designed, the sign that can adopt the technology settings such as Information hiding in various DOVD technology, microscopic carvings seal technology, the mixed and disorderly background to have readable nature.Because the resolution characteristic of human eye is limited,, need to adopt the machine recognition technology to carry out automatic interpretation, technology that Here it is false proof " machine-readable " in order to improve the anti-counterfeiting power of anti-counterfeiting mark." anti-counterfeiting technology detection means " relevant with anti-counterfeiting power in national standard " anti-counterfeiting holographic product general technical specifications " (GB/T 17000-1997) stipulates that the anti-counterfeiting mark of highest level (A level) must be equipped with " hi-tech special testing instrument or superior decoding device ".
Summary of the invention
The purpose of this utility model is to provide a kind of spectral transformation identifier of novel holographic anti-counterfeiting label, and this identifier can be differentiated enciphered message specific on the anti-counterfeiting mark, and the dynamics of anti-counterfeiting mark is greatly improved.
For realizing above-mentioned utility model purpose, a kind of spectral transformation identifier of holographic anti-counterfeiting label, comprise the detection hole, semi-transparent semi-reflecting lens, focusing screen sheet and optical system and the planar array detector that are positioned at successively on the same light path, LASER Light Source is positioned at the below of semi-transparent semi-reflecting lens, and microcomputer intelligent interpretation system links to each other with planar array detector.
Be provided with in anti-counterfeiting mark with the method for spectral transformation and hide Info, survey in some special space position with photodetector, discern automatically, judge the true and false of sign with instrument through after the irradiation of laser beam.Performances such as the utility model adopts the machine recognition anti-counterfeiting mark, has the resolution height, and is easy to operate help further applying of machine-readable anti-false sign.
Description of drawings
Fig. 1 is the principle schematic of spectral transformation identifier;
Fig. 2 is the process flow diagram of spectral transformation identifier identifying;
Fig. 3 is the structural representation of spectral transformation identifier.
Embodiment
The present invention is the diffraction grating structure that utilizes various different color harmony orientations, surveys in some special space position with photodetector through after the irradiation of laser beam, and its principle as shown in Figure 1.Detect and the method for interpretation has that amplitude is relevant, phase place is correlated with, the signal extraction in the noise and the whole bag of tricks of image and signal Processing.
As shown in Figure 1, containing the Fourier transform spectrogram that hides Info is produced on the aluminized plastic film 2 with the form 1 of embossment structure.During instrument identification, with laser beam 3 irradiation spectrograms, the diffraction light of spectrogram is reflected by the aluminium coated on 1, collect diffraction light by optical system 4 then, be converted to electric signal by planar array detector 5 after the imaging, handle through signal Processing and microcomputer intelligent interpretation system 6, adopt with standard picture and carry out the algorithm that intensity is relevant and the locus is relevant, come the true and false of discrimination flag.
The control of instrument, signal Processing and genuine/counterfeit discriminating are finished by one chip microcomputer, can adjust the threshold value of genuine/counterfeit discriminating according to different use objects neatly, thereby adjust the false-alarm probability of genuine/counterfeit discriminating.The process flow diagram of spectral transformation identifier identifying as shown in Figure 2.
Fig. 3 is the structural representation of spectral transformation identifier.In Fig. 3, the laser that is sent by laser instrument 7 shines detection hole 9 through semi-transparent semi-reflecting lens 8, detects the place, hole and places detected sign spectrogram.The diffraction light of sign spectrogram through launching after the laser radiation is imaged on the frosted glass plate 10 by semi-transparent semi-reflecting lens.Picture on 11 pairs of frosted glass plates of optical system is taken pictures, and is converted to electric signal by planar array detector 5, handles through signal Processing and microcomputer intelligent interpretation system 6.
Claims (1)
1. the spectral transformation identifier of a holographic anti-counterfeiting label, comprise detection hole (9), semi-transparent semi-reflecting lens (8), focusing screen sheet (10) and the optical system (11) and the planar array detector (5) that are positioned at successively on the same light path, LASER Light Source (7) is positioned at the below of semi-transparent semi-reflecting lens (8), and microcomputer intelligent interpretation system (6) links to each other with planar array detector (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279715 CN2575702Y (en) | 2002-10-24 | 2002-10-24 | Low noise, high-gain, high flatness long wave band erbium-doped optical fibre amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279715 CN2575702Y (en) | 2002-10-24 | 2002-10-24 | Low noise, high-gain, high flatness long wave band erbium-doped optical fibre amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575702Y true CN2575702Y (en) | 2003-09-24 |
Family
ID=33742721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279715 Expired - Lifetime CN2575702Y (en) | 2002-10-24 | 2002-10-24 | Low noise, high-gain, high flatness long wave band erbium-doped optical fibre amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2575702Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375186B (en) * | 2006-01-17 | 2010-09-29 | 株式会社资生堂 | Laminated material with information recorded thereon, article comprising said laminated material applied thereto, information reading method, and information reading apparatus |
| CN103870863A (en) * | 2014-03-14 | 2014-06-18 | 华中科技大学 | Method for preparing hidden two-dimensional image holographic anti-counterfeit label and identification device thereof |
-
2002
- 2002-10-24 CN CN 02279715 patent/CN2575702Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101375186B (en) * | 2006-01-17 | 2010-09-29 | 株式会社资生堂 | Laminated material with information recorded thereon, article comprising said laminated material applied thereto, information reading method, and information reading apparatus |
| CN103870863A (en) * | 2014-03-14 | 2014-06-18 | 华中科技大学 | Method for preparing hidden two-dimensional image holographic anti-counterfeit label and identification device thereof |
| CN103870863B (en) * | 2014-03-14 | 2016-08-31 | 华中科技大学 | Preparation is hidden the method for image in 2 D code holographic false proof label and identifies device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6001510A (en) | Method for producing laser hologram anti-counterfeit mark with identifying card and inspecting card and inspecting apparatus for the mark | |
| EP0548142B1 (en) | Security device | |
| EP3401845B1 (en) | Anti-counterfeiting barcode reader and associated methods | |
| CN101923647B (en) | Optical authentication | |
| US6263104B1 (en) | Method and apparatus for reading and verifying holograms | |
| US20150213666A1 (en) | Verification of Documents of Value Having a Window Displaying Diffractive Structures | |
| US10388098B2 (en) | Apparatus and method of processing anti-counterfeiting pattern, and apparatus and method of detecting anti-counterfeiting pattern | |
| US7652757B2 (en) | Method and apparatus for inspection of security articles incorporating a diffractive optical projection element | |
| CN105225338A (en) | Currency examine | |
| CN104464075A (en) | Detection method and device for anti-counterfeiting product | |
| CN2575702Y (en) | Low noise, high-gain, high flatness long wave band erbium-doped optical fibre amplifier | |
| JPH0550788A (en) | Card and card reader | |
| KR20160083603A (en) | Hologram with polarization image | |
| CN101504469B (en) | Hologram based on Moire fringe technology, and its plate making and identifying method | |
| CN1508532A (en) | Spectral change identifying apparatus for holographic antifake mark | |
| KR20010076926A (en) | Discrimination method for money and discriminator thereof | |
| CN104376634A (en) | Detection method and device for printed matter | |
| JP3897318B2 (en) | Anti-counterfeit hologram and forgery hologram detection method | |
| RU2514993C1 (en) | Method of inspecting paper and apparatus therefor (versions) | |
| KR20120069841A (en) | A banknote discrimination apparatus using contact image sensor module | |
| GB2248943A (en) | Improved device for reading and evaluating encoded information | |
| JPH08501646A (en) | Diffraction surface data detector | |
| CN2270994Y (en) | Static or dynamic micro-analysis desk type false descriminator | |
| CN217671890U (en) | Security element | |
| US7113690B2 (en) | Anti-counterfeit method and system by using a nano metal grating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20121024 Granted publication date: 20030924 |