CN2317478Y - Video fluorescent discriminator - Google Patents
Video fluorescent discriminator Download PDFInfo
- Publication number
- CN2317478Y CN2317478Y CN 97216329 CN97216329U CN2317478Y CN 2317478 Y CN2317478 Y CN 2317478Y CN 97216329 CN97216329 CN 97216329 CN 97216329 U CN97216329 U CN 97216329U CN 2317478 Y CN2317478 Y CN 2317478Y
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- light source
- video camera
- monitor
- camera
- combined
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- Expired - Fee Related
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model relates to a novel video fluorescent discriminator which discriminates counterfeit money, carries out the material evidence discrimination and presents latent fingerprint. A visible light source box, a camera and a darkroom control box are combined into integration, and 24v, 250w projection lights are used in a visible light source luminescent stimulating light; an optical path which is combined by a 50 aspherical mirror and a 55*900 DEG spherical mirror is used, and an imported CCD camera with high resolution and high sensitivity is used. The utility model has the advantages of accurate identification, compact structure, convenient operation, moderate cost, etc., and is particularly suitable for a banking system.
Description
The utility model relates to and a kind ofly is used for differentiating counterfeit money, carries out the novel video fluorescence detector that latent fingerprint was identified and manifested to material evidence.
At present in public security, procuratorial work, customs, bank and other judicial expertise system of China and financial circulation field, often run into the economic case that some lawless persons utilize different writing materials crimes.Under the natural light condition, it is quite similar to observe these writing materials, as color, gloss, deep or light etc., but because of differences such as producer, the trades mark, may have the different characteristics of luminescences.The currency of various countries all adopts extraordinary papery, uses multiple false proof fluorescence encryption measures to make, and, mixes in paper pulp in the paper-making process and spreads extraordinary fluorescent fiber silk except that adopting extraordinary papery as dollar; 100 yuan, 50 yuan of Renminbi versions in 1980 and nineteen ninety version 100 yuan, 50 yuan nominal values on, special separately fluorescence secret mark is also arranged respectively; The various face amount Hongkong dollars that Hong Kong ﹠ Shanghai Banking co, Standard Chartered Bank publish have fluorescence secret mark separately or the like respectively.The discovery of paper latent fingerprint and extraction also are to belong to a worldwide fingerprint identification difficult problem.The various countries scientist works out some glimmering reagent methods, finds latent fingerprint on the paper.This type of new product that has occurred country's developments such as Germany, Switzerland in recent years in the world.Homemade large-scale similar products have the infrared file tester of DGY type of the Ministry of Public Security's two manufacturings, the spectrum comparison instrument that Suzhou 267 factories produce, and the small-sized file tester produced of public security university, the spirit of Wuxi China.The long and short ripple UV-lamp of the small-sized collection of many genus of market sale, white light, magnetic head etc. are the Bill identifier of one, as WJ-1 type ticket somascope, the desk-top discriminating machine for fake RMB of the multi-functional DC-AC two-use of HJ-201 and various ultraviolet sources etc.The inventor once disclosed a kind of video fluorescence detector on Chinese patent, ZL932067344, and its principal character is that visible light source case, video camera, monitor, dark room operation case all adopt the box-like structure of discrete sets.
The purpose of this utility model is improved on the basis of original patent and a kind of novel video fluorescence detector that designs, and whole device volume is dwindled, and differentiates that accuracy is higher, uses convenient.
The purpose of this utility model is realized by following concrete measure: visible light source case, video camera, dark room operation case are combined into one, constitute light source by excited by visible light illuminator, aspheric mirror and lens optical filter box in the visible light source case.Light source that is combined into one and position for video camera be in the side of monitor, the top of video camera dress camera lens, monitor be placed on inspection box above.The excited by visible light illuminator adopts 24V, 250W shot-light, adopts the combined optical path of φ 50 aspheric mirrors and 55 * 900 ° of spherical mirrors, adopts high resolving power, highly sensitive import ccd video camera.
Below in conjunction with accompanying drawing the utility model is elaborated:
Fig. 1 is an outside drawing
Fig. 2 is light source 3 light channel structure synoptic diagram
Fig. 3 is that the A of Fig. 1 is to view
The utility model mainly comprises inspection box 1, monitor 2, light source 3, video camera 4, camera lens 5.Light source 3, video camera 4, dark room operation case are combined into one.Light source 3 is fixed on the dividing plate of inspection box 1 internal upper part, and video camera 4 is fixed on the inspection box internal partition, the front portion of light source 3, and light source 3, video camera 4, dark room operation case are combined into one.Aspheric mirror 7 is equipped with at light source 3 middle parts, and front end is equipped with lens optical filter box 8.Adopt 24V, 250W shot-light 6 to constitute the excited by visible light light source in the light source 3.Light source that is combined into one and position for video camera are in the side of monitor 2, and the top of video camera is a camera lens 5.Monitor is placed on above the inspection box, with vision cable the video camera output terminal is connected with the input end of monitor, and with the respective socket on the power supply insertion inspection box rear panel of monitor, the monitor power supply switch is got to the pass, and with brightness and contrast's knob of monitor, be transferred to head in the direction of the clock, allow the operating key switch is in closed condition on the inspection box.
During use, dispatch earlier, press the visible light switch, visible light source is bright, regulates lens aperture to maximum, should occur dollar sample and luminous Fil-Lumiere on the video screen, regulates lens focus, and monitor brightness, contrast make till the clear picture satisfaction.Comprise material evidence evaluation, papery check, extremely red fluoroscopic image imaging check, the check of water wave picture in the discrimination method.Material evidence identify be utilize whether contain in the writing material composition that can send out extremely red fluorescence identify partly disappear take off, cover, alter, material evidence sample such as interpolation.The utility model be disappear in identifying according to world's material evidence take off, cover, alter, the luminous difference of writing material such as interpolation, import ccd video camera, monitor and the bigbore TV camera lens of short focal length are adopted in the application of latent fingerprint fluorescent appear reagent on the characteristics of the false proof fluorescence encryption technology of various countries' currency and the paper.Adopt the utility model to make to differentiate accurately, compact conformation, easy to use, cost is moderate.
Claims (1)
1. novel video fluorescence detector, mainly by monitor 2, video camera 4, camera lens 5, light source 3, the dark room operation case constitutes, it is characterized in that light source 3 is fixed on the dividing plate of inspection box 1 internal upper part, video camera 4 is fixed on inspection box 1 internal partition, the front portion of light source 3, make light source 3, video camera 4, the dark room operation case is combined into one, aspheric mirror 7 is equipped with at light source 3 middle parts, front end is equipped with lens optical filter box 8, light source 3 is by shot-light 6, aspheric mirror 7 and lens optical filter box 8 constitute the excited by visible light light source, light source 3 and video camera 4 and dark room operation case are positioned at the side of monitor 2, the top of video camera 4 is a camera lens 5, monitor 2 be placed on inspection box 1 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216329 CN2317478Y (en) | 1997-05-08 | 1997-05-08 | Video fluorescent discriminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216329 CN2317478Y (en) | 1997-05-08 | 1997-05-08 | Video fluorescent discriminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2317478Y true CN2317478Y (en) | 1999-05-05 |
Family
ID=33933254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97216329 Expired - Fee Related CN2317478Y (en) | 1997-05-08 | 1997-05-08 | Video fluorescent discriminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2317478Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323244A (en) * | 2011-05-30 | 2012-01-18 | 江南大学 | Method for rapidly detecting portable food packaging fluorescent material and device |
| CN103674907A (en) * | 2012-09-25 | 2014-03-26 | 沈锋艳 | Video fluorescent document mark instrument |
-
1997
- 1997-05-08 CN CN 97216329 patent/CN2317478Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323244A (en) * | 2011-05-30 | 2012-01-18 | 江南大学 | Method for rapidly detecting portable food packaging fluorescent material and device |
| CN103674907A (en) * | 2012-09-25 | 2014-03-26 | 沈锋艳 | Video fluorescent document mark instrument |
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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 |