CN204650545U - A kind of lighting device and arrangement architecture thereof being applied to iris recognition - Google Patents
A kind of lighting device and arrangement architecture thereof being applied to iris recognition Download PDFInfo
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- CN204650545U CN204650545U CN201520365111.2U CN201520365111U CN204650545U CN 204650545 U CN204650545 U CN 204650545U CN 201520365111 U CN201520365111 U CN 201520365111U CN 204650545 U CN204650545 U CN 204650545U
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- iris recognition
- lighting device
- lamp pearl
- infrared light
- prefocus cup
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Abstract
The utility model relates to a kind of lighting device and the arrangement architecture thereof that are applied to iris recognition, comprises the prefocus cup that the great power LED be made up of heating radiator and lamp pearl and the infrared light that lamp pearl can be sent are transformed into the even infrared light of the corresponding form angle being applicable to iris recognition after total reflection and transmission process; Lamp pearl is located on heating radiator; Prefocus cup wraps lamp pearl.The utility model utilizes great power LED to provide the light of high brightness, through the process of prefocus cup, be transformed into high strength and the light of uniform illumination, solve the defect that in conventional art, LED light device uneven illumination is even, illumination brightness is low, and reduce glasses reflection to a certain extent to the impact of iris recognition, improve the precision of iris recognition.
Description
Technical field
The utility model relates to a kind of lighting device, particularly relates to a kind of lighting device and the arrangement architecture thereof that are applied to iris recognition.
Background technology
In iris recognition process, needing light source provides Infrared irradiation on iris, thus phase function collects the image of iris.Along with the development of iris recognition technology, the accuracy requirement of iris recognition improves constantly thereupon.Infrared light, according to as key element requisite in iris recognition gatherer process, becomes the important point of penetration improving iris recognition precision.
In the past for iris capturing process provides the light source of infrared light photograph to be common infrared LED, this common LED is applied in iris recognition process can have following shortcoming:
1. the infrared light uneven illumination provided is even;
2. the infrared light brightness provided is low;
3. the infrared light provided easily is formed reflective on user's glasses.
These shortcomings above-mentioned all cause negative effect to the collection of iris image in iris recognition process, and the definition of iris image causing collected by camera to arrive is relatively low, thus have impact on the precision of iris recognition.
In order to solve the low defect of common infrared LED illumination brightness, in prior art, form array to make up the deficiency of illumination brightness by by multiple common infrared LED.But this method still can not solve the even glasses reflection of uneven illumination to the impact of iris recognition, simultaneously due to the existence of LED array, the volume also corresponding increase of lighting device.
Present stage is needed a kind of lighting device badly and addresses the deficiencies of the prior art, and provides even and the infrared light of high brightness solve the impact of glasses reflection on iris recognition.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of lighting device and the arrangement architecture thereof that are applied to iris recognition, and the infrared light uneven illumination that solution prior art provides is even, brightness is low and infrared light easily forms reflective problem on user's glasses.
The technical scheme that the utility model solves the problems of the technologies described above is as follows, be applied to a lighting device for iris recognition, it is characterized in that: comprise the prefocus cup that the great power LED be made up of heating radiator and lamp pearl and the infrared light that described lamp pearl can be sent are transformed into the even infrared light of the corresponding form angle being applicable to iris recognition after total reflection and transmission process; Described lamp pearl is located on described heating radiator; Described prefocus cup wraps described lamp pearl.
Further: described prefocus cup is the compound prefocus cup in fully reflecting surface and transmission-type face.
Further: the wavelength of the infrared light that described lamp pearl is launched is 700-1000nm.
The beneficial effects of the utility model are: the utility model utilizes great power LED to provide the light of high brightness, through the process of prefocus cup, be transformed into high strength and the light of uniform illumination, solve the defect that in conventional art, LED light device uneven illumination is even, illumination brightness is low, and reduce glasses reflection to a certain extent to the impact of iris recognition, improve the precision of iris recognition.
The utility model also proposes a kind of arrangement architecture being applied to iris recognition lighting device, it is characterized in that: comprise multiple lighting device and be located at the Centromedian camera window of multiple described lighting device.
Further, described lighting device has two, and two described lighting devices are symmetricly set in the both sides of described camera window.
The beneficial effect of above-mentioned further scheme is: adopt two methods in lighting device symmetrical of iris recognition, carries out complementation further average to the light intensity of the infrared light that light source sends, the precision of raising iris recognition.
Further, described lighting device has four, and four described lighting devices are that 2X2 array is arranged.
The beneficial effect of above-mentioned further scheme is: adopt four lighting device composition illumination arrays being applied to iris recognition, carry out complementation further average under guarantee provides the prerequisite of larger light intensity to the light intensity of the infrared light that light source sends.Can be applied to simultaneously and provide sufficient illumination, to ensure the precision of iris recognition to iris recognition under some remote conditions.
Accompanying drawing explanation
Fig. 1 is the utility model schematic appearance;
Fig. 2 is the utility model side-looking structural perspective;
Fig. 3 is the structural representation of the utility model application example one;
Fig. 4 is the structural representation of the utility model application example two;
In figure 101, prefocus cup; 102, heating radiator; 201, lamp pearl; 301, camera window; 401 lighting devices.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1 and Figure 2, be applied to a lighting device for iris recognition, comprise the prefocus cup 101 that the great power LED be made up of heating radiator 102 and lamp pearl 201 and the infrared light that described lamp pearl 201 can be sent are transformed into the even infrared light of the corresponding form angle being applicable to iris recognition after total reflection and transmission process; Described lamp pearl 201 is located on described heating radiator 102; Described prefocus cup 101 wraps described lamp pearl 201.Described prefocus cup 101 is the compound prefocus cup 101 in fully reflecting surface and transmission-type face.The wavelength of the infrared light that described lamp pearl 201 is launched is 700-1000nm.Described great power LED is utilized to provide the infrared light of high brightness, through the process of described prefocus cup 101, be transformed into high strength and the infrared light of uniform illumination, solve the defect that in conventional art, LED light device uneven illumination is even, illumination brightness is low, and reduce glasses reflection to a certain extent to the impact of iris recognition, improve the precision of iris recognition.
The utility model application example one as shown in Figure 3, a kind of arrangement architecture being applied to iris recognition lighting device, comprises multiple lighting device 401 and is located at the Centromedian camera window 301 of multiple described lighting device 401.Described lighting device 401 has two, and two described lighting devices 401 are symmetricly set in the both sides of described camera window 301.Adopt two methods in lighting device symmetrical of iris recognition, further complementation is carried out to the light intensity of the infrared light that light source sends average, the precision of raising iris recognition.
The utility model application example two as shown in Figure 4, a kind of arrangement architecture being applied to iris recognition lighting device, comprises multiple lighting device 401 and is located at the Centromedian camera window 301 of multiple described lighting device 401.Described lighting device 401 has four, and four described lighting devices 401 are arranged in 2X2 array.Adopt four lighting device composition illumination arrays being applied to iris recognition, under guarantee provides the prerequisite of larger light intensity, further complementation is carried out to the light intensity of the infrared light that light source sends average.Can be applied to simultaneously and provide sufficient illumination, to ensure the precision of iris recognition to iris recognition under some remote conditions.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. be applied to a lighting device for iris recognition, it is characterized in that: comprise the prefocus cup (101) that the great power LED be made up of heating radiator (102) and lamp pearl (201) and the infrared light that described lamp pearl (201) can be sent are transformed into the even infrared light of the corresponding form angle being applicable to iris recognition after total reflection and transmission process; Described lamp pearl (201) is located on described heating radiator (102); Described prefocus cup (101) wraps described lamp pearl (201).
2. a kind of lighting device being applied to iris recognition according to claim 1, is characterized in that: the compound prefocus cup that described prefocus cup (101) is fully reflecting surface and transmission-type face.
3. a kind of lighting device being applied to iris recognition according to claim 1, is characterized in that: the wavelength of the infrared light that described lamp pearl (201) is launched is 700-1000nm.
4. be applied to an arrangement architecture for iris recognition lighting device, it is characterized in that: comprise the multiple described lighting device (401) of any one of claims 1 to 3 and be located at the Centromedian camera window (301) of multiple described lighting device (401).
5. a kind of arrangement architecture being applied to iris recognition lighting device according to claim 4, it is characterized in that: described lighting device (401) has two, two described lighting devices (401) are symmetricly set in the both sides of described camera window (301).
6. a kind of arrangement architecture being applied to iris recognition lighting device according to claim 4, is characterized in that: described lighting device (401) has four, four described lighting devices (401) are arranged in 2X2 array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365111.2U CN204650545U (en) | 2015-05-29 | 2015-05-29 | A kind of lighting device and arrangement architecture thereof being applied to iris recognition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365111.2U CN204650545U (en) | 2015-05-29 | 2015-05-29 | A kind of lighting device and arrangement architecture thereof being applied to iris recognition |
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| CN204650545U true CN204650545U (en) | 2015-09-16 |
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| CN201520365111.2U Active CN204650545U (en) | 2015-05-29 | 2015-05-29 | A kind of lighting device and arrangement architecture thereof being applied to iris recognition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI697800B (en) * | 2017-06-23 | 2020-07-01 | 光寶科技股份有限公司 | Light emitting control system and image recognition camera and mobile terminal having the same |
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2015
- 2015-05-29 CN CN201520365111.2U patent/CN204650545U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI697800B (en) * | 2017-06-23 | 2020-07-01 | 光寶科技股份有限公司 | Light emitting control system and image recognition camera and mobile terminal having the same |
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| GR01 | Patent grant |