CN2676828Y - Optical fiber illuminating iris image gathering derice - Google Patents
Optical fiber illuminating iris image gathering derice Download PDFInfo
- Publication number
- CN2676828Y CN2676828Y CNU032782411U CN03278241U CN2676828Y CN 2676828 Y CN2676828 Y CN 2676828Y CN U032782411 U CNU032782411 U CN U032782411U CN 03278241 U CN03278241 U CN 03278241U CN 2676828 Y CN2676828 Y CN 2676828Y
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- optical fiber
- iris image
- iris
- image acquiring
- object lens
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Abstract
The utility model relates to an optical fiber illuminating iris image gathering device, comprising a camera and an illuminating apparatus, which belongs to analytic instrument technique field. The illuminating apparatus is an optical fiber illuminating apparatus whose fiber optic bundle output terminal causes the light coherent angle of inclination arranged circlewise, fixed to the circular fixing seat in front of the camera. The input terminal of the fiber optic bundle is coupled with the light source for lighting. When the utility model is used, the ring fiber optic bundle on the fixing seat has no shield to the camera, so the light diffused by the cohesion angle of inclination end is converging at work deepness. Consequently, the illumination cone of light falls on the pupil point of human eyes, not in the least affecting the iris picture pattern. Thereby, the iris information characteristics is kept completely, favourable to iris diagnosis and iris identification.
Description
Technical field
This utility model relates to a kind of iris image acquiring device, and especially a kind of optical fibre illumination iris image acquiring device belongs to technical field of analytical instruments.
Background technology
Iridiagnosis and iris identification are two big applications of iris image acquiring device.Wherein, iridiagnosis starts from the Hungary in Europe, existing so far century-old above history.This diagnosis is determined the deposition site and the levels of accumulation of " toxin " organ in the human body by the variation of observing the iris form, thereby judges the impaired of this position.Can find disease as early as possible like this, subhealth state (state before sick) is eliminated among rudiment, human body be kept fit for a long time, away from the harm of disease.
On the other hand, since traditional identity recognition methodss such as password, certificate, person's handwriting exist easily forget, easy shortcoming such as personation, and electronics savings and ecommerce develop that to make identity differentiate day by day important rapidly, therefore based on " that the people respectively has is different, throughout one's life constant, carry " fingerprint, iris, sound, the face picture of biological characteristic discern and more and more come into one's own.Wherein iris identification is the highest a kind of authentication identifying method of discrimination up to now.
The human early stage optical instrument of observing iris by means of magnifier and so on.But, darker in color little because of the iris area, identification and diagnosis are all very difficult, and accuracy rate is not high, and iris image information can not store and print.Retrieval is found, at present both at home and abroad the iridoscope of making (for example application number is 99110825.6, name is called Chinese patent, the publication number 1282048A of " (based on the identity identifying method and the device of iris identification) ") generally adopts the structure that light emitting diode or other illumination apparatuies are thrown light on to iris is installed in the front of photographic head, results acquisition to iris image on exist inevitably and have a luminous point (referring to Fig. 1) at least.The existence of this luminous point makes observed person's eyes rather uncomfortable, not only influences the optical uniformity of illumination, and has covered part iris information feature, and it is very unfavorable that iris image is differentiated.
Summary of the invention
The purpose of this utility model is: at the shortcoming of above prior art existence, a kind of optical fibre illumination iris image acquiring device that can avoid having on the iris image luminous point is proposed, thereby the iris information feature that is kept perfectly helps iridiagnosis and iris identification.
In order to reach above purpose, optical fibre illumination iris image acquiring device of the present utility model comprises photographic head and illumination apparatus, described illumination apparatus is an optical fiber lighting device, the fibre bundle outfan of described optical fiber lighting device is so that the cohesive inclination angle of light is arranged into ring-type, be fixed on the preceding annular fixed seat of photographic head the input of described fibre bundle and lighting source coupling.
During use, annular fiber bundle on the holder to photographic head without any blocking, assemble in working depth from the light that its cohesion inclination angle end-fire goes out, illumination spot will drop on human eye pupil place as a result, do not influence iris image at all, thereby kept complete iris information feature, helped iridiagnosis and iris identification.
Description of drawings
Below in conjunction with accompanying drawing this utility model is further described.
Fig. 1 is the iris photo of prior art.
Fig. 2 is the structural representation of an embodiment of this utility model.
Fig. 3 is the structural representation of optical fiber lighting device among Fig. 2 embodiment.
Fig. 4 is the annular of optical fiber among Fig. 2 embodiment structural representation of arranging
Fig. 5 is the iris photo of present embodiment.
The specific embodiment
Embodiment one
The optical fibre illumination iris image acquiring device of present embodiment as shown in Figure 2, photographic head is equipped with on top at shell 9, the front suit object lens holder 7 of its CCD (or CMOS) target surface 8, these object lens holder 7 outer suit optical fiber lighting devices 6, endoporus move seat 4 by screw thread and the tubulose object lens that object lens 3 are housed and are connected.Object lens move the cylindrical of seat 4 by gear pair and focusing handwheel 5 engagements that are installed in optical fiber lighting device 6 fronts, are with trumpet-shaped eyeshield 2 before the focusing handwheel 5.
As shown in Figure 3, the fibre bundle in the optical fiber lighting device is that the multicomponent glass optical fiber of 50 μ m constitutes by the multifilament diameter.The outfan 10 of fibre bundle is so that the cohesive inclination angle of light is arranged into ring-type, is fixed on the annular fixed seat 11 before the photographic head, form 25 ° in cone angle.The input 12 of fibre bundle and light emitting diode 13 couplings, this light emitting diode 13 is the white light-emitting diodes of 1.8w, is controlled by light adjusting circuit 14, can regulate brightness by the button among Fig. 2 15.
In order to get out of the way focusing handwheel 5, fibre bundle outfan 10 can be arranged into central angle shown in Figure 4 180 ° of C shape ring-types to 240 ° of scopes, and annular thickness is 0.2mm.
During use, eyeshield 2 is close to human eye 1, opens light source white light-emitting diodes 13, regulate brightness, and, make iris imaging on CCD (or CMOS) target surface 8 by focusing handwheel 5 accurate adjustment object lens with button 15.Because optical fiber is arranged with certain inclination angle at the illumination outfan, therefore the light that is penetrated by optical fiber is assembled in working depth, therefore illumination spot will drop on human eye pupil place (referring to Fig. 5), and because optical fiber lines up ring-like (can be closed circle, semicircular ring etc.) in the illumination outfan so illuminating ray is even, shadow-free.
Facts have proved, the optical fibre illumination iris image acquiring device light of present embodiment is soft, shadow-free, illumination spot drops on human eye pupil place fully, kept complete iris information feature, therefore the iris image energy clear resolution of observer to gathering can carry out the identification or the diagnosis of science to iris.
In addition to the implementation, this utility model can also have other embodiments.For example can be CCD target surface or CMOS target surface, used optical fiber can be multicomponent glass optical fiber, pure silica fibre or plastic optical fiber etc.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of this utility model requirement.
Claims (6)
1. optical fibre illumination iris image acquiring device, comprise photographic head and illumination apparatus, it is characterized in that: described illumination apparatus is an optical fiber lighting device, the fibre bundle outfan of described optical fiber lighting device is so that the cohesive inclination angle of light is arranged into ring-type, be fixed on the preceding annular fixed seat of photographic head the input of described fibre bundle and lighting source coupling.
2. according to the described optical fibre illumination iris image acquiring device of claim 1, it is characterized in that: described photographic head is installed in the shell, the front suit object lens holder of its target surface, the outer suit optical fiber lighting device of described object lens holder, endoporus move seat by screw thread and the tubulose object lens that object lens are housed and are connected.
3. according to the described optical fibre illumination iris image acquiring device of claim 2, it is characterized in that: described object lens move the cylindrical of seat by gear pair and the focusing handwheel engagement that is installed in the optical fiber lighting device front.
4. according to the described optical fibre illumination iris image acquiring device of claim 3, it is characterized in that: be with trumpet-shaped eyeshield before the described focusing handwheel.
5. according to the described optical fibre illumination iris image acquiring device of claim 3, it is characterized in that: described target surface is CCD target surface or CMOS target surface.
6. according to the described optical fibre illumination iris image acquiring device of claim 3, it is characterized in that: described optical fiber is multicomponent glass optical fiber, pure silica fibre or plastic optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032782411U CN2676828Y (en) | 2003-09-02 | 2003-09-02 | Optical fiber illuminating iris image gathering derice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032782411U CN2676828Y (en) | 2003-09-02 | 2003-09-02 | Optical fiber illuminating iris image gathering derice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2676828Y true CN2676828Y (en) | 2005-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032782411U Expired - Fee Related CN2676828Y (en) | 2003-09-02 | 2003-09-02 | Optical fiber illuminating iris image gathering derice |
Country Status (1)
| Country | Link |
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| CN (1) | CN2676828Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102334976A (en) * | 2011-07-05 | 2012-02-01 | 黄立平 | Lighting device of digital camera of imaging system for infant eye ground |
| CN105286780A (en) * | 2014-06-05 | 2016-02-03 | 佳能株式会社 | OPHTHALMOLOGIC MEASUREMENT APPARATUS and METHOD |
-
2003
- 2003-09-02 CN CNU032782411U patent/CN2676828Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102334976A (en) * | 2011-07-05 | 2012-02-01 | 黄立平 | Lighting device of digital camera of imaging system for infant eye ground |
| CN105286780A (en) * | 2014-06-05 | 2016-02-03 | 佳能株式会社 | OPHTHALMOLOGIC MEASUREMENT APPARATUS and METHOD |
| US9427145B2 (en) | 2014-06-05 | 2016-08-30 | Canon Kabushiki Kaisha | Ophthalmologic measurement apparatus, method and program of controlling the same |
| CN105286780B (en) * | 2014-06-05 | 2017-05-24 | 佳能株式会社 | OPHTHALMOLOGIC MEASUREMENT APPARATUS and METHOD |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050209 Termination date: 20110902 |