CN2366902Y - Optical probe for testing paper banknote - Google Patents
Optical probe for testing paper banknote Download PDFInfo
- Publication number
- CN2366902Y CN2366902Y CN98244730U CN98244730U CN2366902Y CN 2366902 Y CN2366902 Y CN 2366902Y CN 98244730 U CN98244730 U CN 98244730U CN 98244730 U CN98244730 U CN 98244730U CN 2366902 Y CN2366902 Y CN 2366902Y
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- CN
- China
- Prior art keywords
- probe
- optical probe
- optical
- light
- bank note
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- 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 - Fee Related
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model relates to an optical probe for testing paper banknotes. The optical probe for testing paper banknotes belongs to an optical coupling device of a banknote testing instrument. A multimode fiber beam (7) is fixed in a probe case body (5) through a rubber sleeve (4) and a fastening screw (6). A bifocal lens (1) embedded in a lens cover (2) is fastened in a thread mode on the probe case body (5) through a pressing spring (3). If the optical probe is utilized, counterfeit banknotes of various countries and securities can be accurately identified.
Description
The design considers to be worth doing in the optical coupling device of currency examine instrument.
Along with being on the rise of counterfeit money, forgery bond crime, various cash inspecting machines are tested fake method and are constantly released.At present bank note is identified that the electro-optical system of employing uses ultraviolet source more, the new type paper currency detect counterfeit money machine of Chinese patent 92111386.4 (CN1083611A) report, use the side edge of the stacked bank note of UV-irradiation exactly, come the identification note true and false according to side along fluorescence reaction, the fluorescence receiving system adopts pulse processing circuit.Chinese patent 94230552.3 (CN2216697Y) has reported that then ultraviolet light detects the counterfeit money instrument automatically, it is by ultraviolet light, sensor, automatic control circuit and mechanical movement are formed, in sensor, the front of photoelectric sensor, with three kinds of monochromatic optical glass QB24, QB21 and JB5 stack up, thereby improve sensitivity greatly, antijamming capability is also strengthened greatly, and above-mentioned bank note identifies it all is to detect the fluorescence that is produced by whitening agent in the counterfeit money under the ultra violet lamp to discern the false from the genuine.Its exciting light is the full light (not beam split) that uviol lamp produces, and receiver generally uses photodiode, differentiates by light intensity, and a distinguishing ability is not had in the distribution of spectrum.
The design's purpose provides a kind of optic probe as optical coupling device, thereby makes the light source of testing pseudo-instrument can adopt laser or through the ordinary light source of beam split and can be used to check the true and false of various countries' bank note and securities.
As is generally known material under certain condition all can be luminous, various chemical treatments on the paper (antioxidant, chemical stabilizer, germifuge etc.) and the printing ink that is printed onto on the bank note can both produce faint fluorescence under certain wavelength excites; The viscosity of printing ink, the fiber that constitutes paper all can cause scattering of light, it is different that different its light scattering of particle diameter distribute.Adopt the optic probe of the present utility model can be to bank note with excitation light irradiation, fluorescence that bank note is produced and scattered light are coupled into and are transferred to spectrometer in the light transmitting fiber again, through beam split, carry out instantaneous record input computing machine by optical multichannel analyzer (CCD) again and compare identification, provide qualification result, detect counterfeit money by computer control.
The architectural feature of the design's optic probe is: multimode fiber-optic bundle (7) is fixed in the probing shell (5) by fixing rubber cover (4) and tight silk (6), and the bifocal lens (1) that is embedded in the lens cover (2) is screwed on the probing shell (5) by stage clip (3).The fibre bundle central optical fiber is used for carrying out the transmission of exciting light, exciting light focuses on the bank note in the cash inspecting machine by bifocal lens (1), fluorescence that bank note is launched and scattered light are in bifocal lens (1) coupled into optical fibres bundle (7), fibre bundle conducts to optical splitter, CCD with light signal, provides qualification result by microcomputer at last.
Fig. 1 is the structural representation of the design's optic probe, also is Figure of abstract.
(1) bifocal lens among the figure, (2) lens cover, (3) stage clip, (4) fibre bundle is the rubber cover fixedly, (5) probing shell, (6) tight silk, (7) fibre bundle.
The counterfeit money assessing instrument of being furnished with the design's optic probe, in use whole authentication step simple and fast.At first, with genuine note, (various countries' bank note all can) fluorescence spectrum and scattering spectrum deposit computing machine in, then bank note to be tested are detected.The false proof measure of various countries' bank note all has unique technique, and these technology are top-secret, but uses the design's probe need not understand the false proof measure of various countries, only need get genuine note and get final product as sample.
The available quartz glass of the bifocal lens of the design's optic probe (1), optical glass or organic glass are made, and first focal length is 0.5-5mm, and optimum value is 1-3mm.Second focal length is 2-20mm, and optimum value is 3-10mm.First focal length can focus on exciting light on the bank note face exactly, and second focal length has improved the reception cross section, has improved the test signal to noise ratio (S/N ratio) like this, and bifocal lens is one of core parts of optic probe.
The design's optic probe can be used for paper money counter, and cash inspecting machine also can be used in the authenticity of securities.
Embodiment 1:
632.8nm light with the emission of He-Ne laser instrument is exciting light, advances fibre bundle through Lens Coupling.Fibre bundle adopts 7 core fibres, central optical fiber conduction exciting light, and all the other 6 light signals that fiber optic conduction bank note is launched, bifocal lens adopt quartz material to make, and first focal length is 2mm, and second focal length is 4mm.
Embodiment 2:
Tight silk (6), housing (5), lens cover (2) all adopts brass to make, and rubber cover (4) is made with vacuum rubber.Bifocal lens adopts k
8Optical glass is made, and first focal length is 3mm, and second focal length is 10mm, the light that light source sends with the Xe lamp is after the spectrometer beam split, and scioptics coupled into optical fibres bundle adopts the conduction of 19 core fibre Shu Jinhang light, central optical fiber is used for transmitting exciting light, and all the other 18 optical fiber are used for transmission signals.Fibre bundle is inserted in the optic probe rubber cover (4), screw tight silk (6) and fix fibre bundle (7).The lens front surface of optic probe and bank note distance adjustment are to 3mm.
Claims (2)
1. a bank note is differentiated optic probe, it is characterized in that multimode fiber-optic bundle (7) is fixed in the probing shell (5) by fixing rubber cover (4) and tight silk (6), the bifocal lens (1) that is embedded in the lens cover (2) is screwed on the probing shell (5) by stage clip (3).
2. according to the optic probe of claim 1, first focal length that it is characterized in that bifocal lens (1) is 0.5-5mm, and optimum value is 1-3mm; Second focal length is 2-20mm, and optimum value is 3-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98244730U CN2366902Y (en) | 1998-10-07 | 1998-10-07 | Optical probe for testing paper banknote |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98244730U CN2366902Y (en) | 1998-10-07 | 1998-10-07 | Optical probe for testing paper banknote |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2366902Y true CN2366902Y (en) | 2000-03-01 |
Family
ID=33990745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98244730U Expired - Fee Related CN2366902Y (en) | 1998-10-07 | 1998-10-07 | Optical probe for testing paper banknote |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2366902Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417931C (en) * | 2005-04-06 | 2008-09-10 | 博奥生物有限公司 | Microarray chip detection system |
-
1998
- 1998-10-07 CN CN98244730U patent/CN2366902Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417931C (en) * | 2005-04-06 | 2008-09-10 | 博奥生物有限公司 | Microarray chip detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |