CN2672768Y - Iris optical imaging device - Google Patents
Iris optical imaging device Download PDFInfo
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- CN2672768Y CN2672768Y CN 200320122291 CN200320122291U CN2672768Y CN 2672768 Y CN2672768 Y CN 2672768Y CN 200320122291 CN200320122291 CN 200320122291 CN 200320122291 U CN200320122291 U CN 200320122291U CN 2672768 Y CN2672768 Y CN 2672768Y
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- optical imaging
- light source
- imaging device
- iris
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- 238000012634 optical imaging Methods 0.000 title claims abstract description 38
- 238000003384 imaging method Methods 0.000 claims abstract description 22
- 238000009792 diffusion process Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 16
- 210000001508 eye Anatomy 0.000 claims description 7
- 230000005622 photoelectricity Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010003830 Automatism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses an iris optical imaging device which can automatically and perfectly obtain high quality iris optical image. The utility model comprises a shell, an imaging lens in the shell, and a video camera, wherein the imaging lens and the video camera are in turn arranged on an optical axial cord. The utility model is characterized in that the utility model is provided with an image processing control unit for controlling the device; a vertical incidence cold mirror is arranged in the front of the optical imaging lens; a distance measuring sensor and at least one light source are arranged in the shell. The light source is composed of a near infrared wave band light source, a near infrared wave band diffusion filtering mirror and a controller for adjusting the position of the light source; the near infrared wave band light source is closed by the near infrared wave band diffusion filtering mirror. The device can dynamically change the position and the strength / brightness of the light source in real time and can adjust the focal distance automatically, so the high quality iris digital image can be acquired.
Description
[technical field]
The utility model relates to a kind of iris optical imaging device, particularly a kind ofly realizes automatically not having the device that high-quality iris optical imagery is obtained in infringement, belongs to optical, mechanical and electronic integration, automatic control technology field.
[background technology]
People's iris is to have a kind of Human Physiology tissue that enriches textural characteristics, medical research is verified, the iris tissue texture varies with each individual and is unchangeable, can be used as the reliable basis of personal identification, makes iris recognition become the object of individual biologicall test as fingerprint recognition.
Existing iris recognition process is normally carried out iris capturing earlier, extracts iris texture characteristic then, carries out measuring similarity with registered feature coding, the individual still refusal of accepting of checking.Therefore, the quality of iris capturing is a most basic step of iris recognition.Iris capturing is finished main employing optical imaging device with the optics imaging mode at present, and it is made of housing, the imaging len that is positioned at housing, camera and light source.But it has strict restriction service range, so can not make things convenient for the user freely to use this iris imaging device, people's eyeball is positioned at fixed position ability imaging, bring inconvenience to use, the device that also has need manually be focused, and could obtain imaging clearly, uses and feels inconvenient equally.
[utility model content]
The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, and a kind of real-time, automatism, nothing infringement, close friend's man machine operation interface and the iris optical imaging device of high-quality image are provided.
The utility model iris optical imaging device, it includes housing, imaging len is arranged in the housing, video camera, and be sequentially arranged on the optical axis, be characterized in: be provided with the image processing control unit that device is controlled, be provided with vertical plane incident cold mirror before the optical imaging lens, distance measurement sensor and at least one light source are set in the housing, and described light source is made up of the controller of near-infrared band lighting source and adjustment light source position.Near-infrared band diffusion filter sealing near-infrared band lighting source.
The utility model iris optical imaging device, the controller of wherein adjusting the light source position are control motor or choice of location/switch.Light source connection control motor drive shaft or choice of location/switch are to adjust the position of light source.
The utility model iris optical imaging device, the near-infrared band lighting source is made up of surface LED chip array and the energy driver that can change the radiation of light source brightness/intensity, and energy driver can change the radiance/intensity of light source by adjusting output current/voltage.Light-emitting diode chip for backlight unit array emission wavelength is 700-900nm.Near-infrared band diffusion filter is arranged before the near-infrared band lighting source, this diffusion filter sealing near-infrared band lighting source, the lighting condition that direction such as can increase the lighting source visual angle, provide evenly distributes also alleviates the direct reflection degree.
Distance measurement sensor is when recording different object distances, and the radiance/strength relationship of light source output is I=(D/D
0)
2I
0
I wherein
0For being preset in object distance D
0Normal brightness/the intensity that defines during the place, D and I are object distance and the corresponding radiance/intensity that distance measurement sensor PSD successive dynamic measuring obtains.
The object distance that obtains by Continuous Tracking PSD kinetic measurement, and determine the radiance/intensity of corresponding light source output according to following formula, the adjusting of radiance/intensity is regulated current/voltage output by energy driver and is finished.
The utility model iris optical imaging device has voice alerting unit and photoelectricity Tip element in the housing.Can make this device easy operating and easy to use.
The utility model iris optical imaging device, vertical plane incident cold mirror are recessed surperficial cold mirror or plane cold mirror, and are provided with eyes vision coverage area guiding sign on the cold mirror surface, guiding user's sight line.
The utility model iris optical imaging device, video camera are black-white CCD or the CMOS video cameras that has responsive in the 400-1000nm wavelength coverage.
The utility model iris optical imaging device, but optical imaging lens is imaging len or the fixed focal length imaging lens with varifocal focusing function, and this optical imaging lens also can be integrated in the video camera, directly by the video camera drive controlling.
The utility model iris optical imaging device, distance measurement sensor are infrared ray or ultrasonic distance measuring element.The utility model adopts said structure, have following beneficial effect: 1) the utility model realizes dynamically changing the light source position by control motor or choice of location/switch, dynamically change radiance/intensity that light source is exported by energy driver, reach the optimal illumination effect; 2) object distance and speed of related movement between distance measurement sensor energy Continuous Tracking measurement user's of the present utility model iris and the device, and by voice suggestion and photoelectricity prompting, the permission user needn't strictly limit service range in that quite width is free movable in scope; 3) but imaging len of the present utility model is imaging len or the fixed focal length imaging lens with variable times and focusing function.And this optical imaging lens also can be integrated in the video camera, and directly by the video camera drive controlling, therefore auto focus control can obtain imaging clearly; 4) the utility model is provided with the eyes vision coverage area and guides sign on the cold mirror surface, guiding user's sight line, nothing infringement, close friend's man machine operation interface; 5) for user's the eyes cornea and (contact lenses or other direct reflection) reason of wearing glasses, strong direct reflection when producing incident, the priming illumination light source often takes place.In this case, lighting source adjusted by the control motor or selection/switch is adjusted at the lighting source of diverse location with the incident angle between the iris that changes light source and user, change the direct reflection degree by incident angle, until obtaining the iris image that the high-quality no reflection events is disturbed.
To and contrast accompanying drawing by embodiment below, the utility model will be further described below.
[description of drawings]
Fig. 1 is the structural representation of the utility model iris optical imaging device;
Fig. 2 is the block diagram of the utility model iris optical imaging device image processing control unit.
Label declaration among the figure: 100-CCD camera; The 101-cold mirror; 102-imaging mirror; The 103-virtual image; The 104-PSD distance measurement sensor; The 105-controller; 106-diffusion filter; The 107-lighting source; The 108-voice suggestion; The prompting of 109-photoelectricity; 110-guides sign; The 111-frame collector; The 99-eyes; The 300-image processing control unit.
[embodiment]
Embodiment 1, the structure of the iris optical imaging device of present embodiment can be seen from Fig. 1, it includes housing, be aligned in sequence with vertical plane incident cold mirror 101 on the optical axis in the housing, optical imaging lens 102, CCD camera 100, antetheca near housing in the housing is provided with PSD distance measurement sensor 104 outward, light source is made up of the controller 105 of near-infrared band lighting source 107 and adjustment light source position, controller 105 adopts the control motor, near-infrared band diffusion filter 106 sealing near-infrared band lighting sources 107, near-infrared band lighting source 107 is made up of surface LED chip array and the energy driver that can change the radiation of light source brightness/intensity, and the energy driver (not shown) changes the radiance/intensity of light source by adjusting output current/voltage.Light-emitting diode chip for backlight unit array emission wavelength is 700-900nm.The utility model also is provided with guiding sign 110.
In the time of before the user is positioned at the vertical plane incident cold mirror 101 of this device, its reflection 400-700nm wave band, the user can clearly see the virtual image 103 that own eyes 99 form, and sees through the above wave band of 700nm simultaneously and is used to the 100 physics imagings of CCD video camera.
Vertical plane incident cold mirror 101 provides a kind of desirable visual feedback mechanism, and by eyes vision coverage area guiding sign 110, the encouragement user of its nature aims at the iris of its eyes in X-Y optic axis center simultaneously.
Near-infrared band lighting source 107 is by the surface LED chip array of emission wavelength in the 700-900nm scope and be used to provide the variable energy driver of energy of light source to form, and this variable energy driver can be by regulating output current/voltage to change the radiance/intensity of light source.
Near-infrared band diffusion filter 106 provides following effect:
A increases the lighting source visual angle;
The lighting condition that direction such as b. provides evenly to distribute;
C alleviates the direct reflection degree;
I＝(D/D
0)
2I
0
I wherein
0For being preset in object distance D
0Normal brightness/the intensity that defines during the place, D and I are object distance and the corresponding radiance/intensity that the PSD successive dynamic measuring obtains.
Therefore should adopt the object distance that obtains by Continuous Tracking PSD kinetic measurement, and determine radiance/intensity that corresponding light source is exported according to following formula, the adjusting of radiance/intensity is regulated current/voltage output by energy driver and is finished.When practical application, can preset object distance and regulate the attribute of a relation table of output valve with corresponding energy driver, realize by quick look-up table (lookup table) then this attribute list.
When the approaching device of user, object distance D and speed of related movement V between PSD Continuous Tracking measurement user's iris and the device.Be in the normal range of operation when movement velocity V is in static relatively while object distance D, enter next process, otherwise voice suggestion 108 and photoelectricity prompting 109 prompting users adjust relative distance and reduce speed of related movement.The utility model allows the user in quite width (as 10cm-40cm) free movement in scope.Needn't strictly limit service range, this point is very convenient during practical application.
Fig. 2 has described the control relation block diagram of near-infrared band optical imaging device of the present invention and image processing control unit.The image of video camera 100 imagings is converted into vision signal (NTSC or PAL) and is converted into digital picture through frame collector 111, or directly be converted to data image signal, this data image signal is transmitted in image processing control unit 300, and it mainly is made up of CPU or DSP digital signal processing unit and basic I/O control module.Image processing control unit is by analyzing the distance measure and the digital picture of input, the result is used for the feedback-controlled optics imaging device: video camera 100, the variable energy driver, control motor 105 or choice of location/switch, voice alerting unit 108 and photoelectricity Tip element 109.Image processing control unit 300 utilizes controls optical imaging device automatically to obtain distance measure and high-quality iris digital picture.
Embodiment 2, present embodiment difference from Example 1 are that diverse location is provided with several near-infrared band lighting sources 107 in the housing, but the variable times of imaging len 102 with focusing function can be integrated in the CMOS video camera 100, directly by video camera 100 drive controlling, the controller of adjusting the light source position is choice of location/switch.
Claims (10)
1, iris optical imaging device, it includes housing, imaging len (102) is arranged in the housing, video camera (100), and be sequentially arranged on the optical axis, it is characterized in that: be provided with the image processing control unit (300) that device is controlled, the preceding vertical plane incident cold mirror (101) that is provided with of optical imaging lens (102), distance measurement sensor (104) and at least one light source are set in the housing, and described light source is made up of the controller (105) of near-infrared band lighting source (107) and adjustment light source position.
2, iris optical imaging device according to claim 1 is characterized in that: the controller (105) of said adjustment light source position is control motor or choice of location/switch.
3, iris optical imaging device according to claim 1, it is characterized in that: said near-infrared band lighting source is made up of surface LED chip array and the energy driver that can change the radiation of light source brightness/intensity, near-infrared band diffusion filter (106) is arranged, this diffusion filter sealing near-infrared band lighting source before the near-infrared band lighting source.
4, iris optical imaging device according to claim 3 is characterized in that: when different object distances, the radiance/strength relationship of light source output is I=(D/D.)
2I。。
5, iris optical imaging device according to claim 1 is characterized in that: voice alerting unit (108) and photoelectricity Tip element (109) are arranged in the said housing.
6, iris optical imaging device according to claim 1 is characterized in that: said vertical plane incident cold mirror (101) is recessed surperficial cold mirror or plane cold mirror, and is provided with eyes vision coverage area guiding sign (110) on the cold mirror surface.
7, iris optical imaging device according to claim 1 is characterized in that: said video camera (100) is black-white CCD or the CMOS video camera that has responsive in the 400-1000nm wavelength coverage.
8, iris optical imaging device according to claim 3 is characterized in that: said light-emitting diode chip for backlight unit array emission wavelength is 700-900nm.
9, iris optical imaging device according to claim 1, it is characterized in that: but said optical imaging lens is imaging len or the fixed focal length imaging lens with varifocal focusing function, this optical imaging lens also can be integrated in the video camera, directly by the video camera drive controlling.
10, iris optical imaging device according to claim 1 is characterized in that: said distance measurement sensor (104) is infrared ray or ultrasonic distance measuring element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122291 CN2672768Y (en) | 2003-12-07 | 2003-12-07 | Iris optical imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320122291 CN2672768Y (en) | 2003-12-07 | 2003-12-07 | Iris optical imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672768Y true CN2672768Y (en) | 2005-01-19 |
Family
ID=34476162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320122291 Expired - Fee Related CN2672768Y (en) | 2003-12-07 | 2003-12-07 | Iris optical imaging device |
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| Country | Link |
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| CN (1) | CN2672768Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326084C (en) * | 2005-03-24 | 2007-07-11 | 上海邦震科技发展有限公司 | Non-contact type self-feedback iris image acquisition device |
| CN101051349B (en) * | 2007-05-18 | 2010-10-13 | 北京中科虹霸科技有限公司 | Multiple iris collecting device using active vision feedback |
| CN103136421A (en) * | 2013-01-31 | 2013-06-05 | 沈洪泉 | System-level photoelectric optimum design method used for iris imaging device |
| CN103605954A (en) * | 2013-11-01 | 2014-02-26 | 武汉虹识技术有限公司 | Image capturing device based on single sensor and spectrum control |
| CN105426874A (en) * | 2015-12-18 | 2016-03-23 | 深圳前海达闼云端智能科技有限公司 | Processing method and device for iris identification |
| CN106371270A (en) * | 2016-10-18 | 2017-02-01 | 周末 | Satellite photographic equipment part |
| CN107895135A (en) * | 2016-10-04 | 2018-04-10 | 三星电机株式会社 | Iris scan camera model and the portable electron device for including it |
| US10740605B2 (en) | 2017-07-05 | 2020-08-11 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Iris collection method, electronic device, and computer readable storage medium |
-
2003
- 2003-12-07 CN CN 200320122291 patent/CN2672768Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326084C (en) * | 2005-03-24 | 2007-07-11 | 上海邦震科技发展有限公司 | Non-contact type self-feedback iris image acquisition device |
| CN101051349B (en) * | 2007-05-18 | 2010-10-13 | 北京中科虹霸科技有限公司 | Multiple iris collecting device using active vision feedback |
| CN103136421A (en) * | 2013-01-31 | 2013-06-05 | 沈洪泉 | System-level photoelectric optimum design method used for iris imaging device |
| CN103136421B (en) * | 2013-01-31 | 2015-08-26 | 贵阳科安科技有限公司 | For the system-level photoelectric optimum design method of iris imaging device |
| CN103605954A (en) * | 2013-11-01 | 2014-02-26 | 武汉虹识技术有限公司 | Image capturing device based on single sensor and spectrum control |
| CN105426874A (en) * | 2015-12-18 | 2016-03-23 | 深圳前海达闼云端智能科技有限公司 | Processing method and device for iris identification |
| CN107895135A (en) * | 2016-10-04 | 2018-04-10 | 三星电机株式会社 | Iris scan camera model and the portable electron device for including it |
| CN107895135B (en) * | 2016-10-04 | 2022-03-08 | 三星电机株式会社 | Iris scanning camera module and portable electronic device comprising same |
| CN106371270A (en) * | 2016-10-18 | 2017-02-01 | 周末 | Satellite photographic equipment part |
| US10740605B2 (en) | 2017-07-05 | 2020-08-11 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Iris collection method, electronic device, and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ROOM 101, BUILDING 207, MO HOUSING ESTATE, DAO CIT Free format text: FORMER NAME OR ADDRESS: NO. 4, YONGHUA ROAD, HANGZHOU CITY, ZHEJIANG PROVINCE, 310022 |
|
| CP03 | Change of name, title or address |
Patentee address after: 313000, Zhejiang, Huzhou province Longquan street, City Mo Village 207, room 101 Patentee address before: Hangzhou City, Zhejiang province 310022 Yonghua Road No. 4 |
|
| 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 |