CN205405545U - Imaging module , biological identification device and mobile terminal - Google Patents
Imaging module , biological identification device and mobile terminal Download PDFInfo
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- CN205405545U CN205405545U CN201620155160.8U CN201620155160U CN205405545U CN 205405545 U CN205405545 U CN 205405545U CN 201620155160 U CN201620155160 U CN 201620155160U CN 205405545 U CN205405545 U CN 205405545U
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Abstract
The utility model discloses an imaging module, biological identification device and mobile terminal, this imaging module includes imaging lens, changeable lens mechanism, switching mechanism, focus institutions and image acquisition sensor, wherein changeable lens mechanism includes to expand and restraints lens unit and first light filter, the different optical mode that strains has respectively, this biological identification device includes above -mentioned imaging module and control module, , gathers first light filter the iris image when switching to imaging lens's the light path in, when switching to imaging lens's the light path in, gathers lens unit facial image when expanding to restraint. The utility model discloses an imaging module, biological identification device and mobile terminal can adapt simultaneous the visual field requirement of gathering iris and facial image, and imaging module simple structure and small is suitable for miniaturized portable instrument's such as mobile terminal use.
Description
Technical field
This utility model relates to technical field of biometric identification, particularly relates to a kind of imaging modules, biological identification device and mobile terminal.
Background technology
Iris identification carries out identification based on the iris in eyes, it it is a kind of high-precision biometrics identification technology, existing iris image acquiring is generally adopted infrared illumination, be equipped with high-resolution photographic head completes, and requires that user has certain fitness in the process carrying out iris image acquiring.And man face image acquiring is generally adopted visible illumination outfit high-resolution camera and can complete, operate relatively easy.The wave-length coverage of the infrared light light source used due to iris image acquiring is 760-960 nanometer (nm), the wave-length coverage of the visible light source that man face image acquiring uses is 400-750 nanometer (nm), iris image acquiring and man face image acquiring carry out under different wave length light lighting condition, therefore adopt iris capturing instrument and each independent equipment of face Acquisition Instrument more.
Image collecting device both being operated in different wavelength range integrates exists certain difficulty, if being integrated on same mobile terminal device by both image collecting devices again, to be also subject to restriction spatially, it is difficult to realize.Two kinds of image collecting devices are integrated by prior art and generally adopts an imaging modules and two optical filters to realize, reach iris image acquiring and the purpose of man face image acquiring switching by controlling optical filter switching.The maximum problem of prior art is, gather the camera lens that camera lens is a fixing angle of visual field of facial image and iris image, need to neglect the camera lens (being generally less than 40 degree) of rink corner when gathering iris, and when gathering facial image with this camera lens, it is difficult to take into account the facial image of different height and diverse location；Needing the camera lens (being generally higher than 80 degree) of the big angle of visual field when gathering face, and when gathering iris with this camera lens, the image resolution ratio shared by iris image is just few a lot, the details of iris image cannot well represent.
Summary of the invention
The purpose of this utility model is in that to provide a kind of imaging modules, biological identification device and mobile terminal, this imaging modules simultaneous adaptation can gather the visual field requirement of iris and facial image, simple in construction and volume are little, solve in prior art cannot meet, by integrated to iris image acquiring and man face image acquiring, the technical problem that two kinds of image acquisition visual fields require on one device simultaneously.
This utility model provides technical scheme as follows:
On the one hand, this utility model provides a kind of imaging modules, including:
Imaging lens, the battery of lens constituted including multi-disc lens and diaphragm；
Changeable eyeglass mechanism, including an extender lens unit and the first optical filter, described extender lens unit and the first optical filter have different optical filtering patterns；
Switching mechanism, the extender lens unit or the first optical filter for making described changeable eyeglass mechanism switches to the light path of imaging lens；
Focusing mechanism, is used for making described imaging lens focus to different focus position；And
Image acquiring sensor, is arranged on the rear end of described imaging lens.
On the other hand, this utility model additionally provides a kind of biological identification device, and including above-mentioned imaging modules and control module, described control module for controlling described switching mechanism and Focusing mechanism according to image capture instruction；
Described image capture instruction is for gathering iris image instruction or gathering facial image instruction；
When receiving collection iris image instruction, described control module controls described switching mechanism makes described first optical filter switch in the light path of imaging lens, controls described Focusing mechanism simultaneously and makes imaging lens focus to the first focusing position；
When receiving collection facial image instruction, described control module controls described switching mechanism makes described extender lens unit switch in the light path of imaging lens, controls described Focusing mechanism simultaneously and makes imaging lens focus to the second focusing position.
Another aspect, this utility model additionally provides a kind of mobile terminal, including above-mentioned biological identification device.
This utility model has the advantages that
Imaging modules simple in construction of the present utility model, volume are little, including imaging lens, changeable eyeglass mechanism, switching mechanism, Focusing mechanism and imageing sensor, are suitable to the use of the Miniaturized portable equipment such as mobile terminal.
Imaging modules of the present utility model simultaneous adaptation can gather the visual field requirement of iris and facial image, iris and the switching of man face image acquiring pattern is realized by the extender lens unit and the first optical filter switching changeable eyeglass mechanism, when extender lens unit switches in imaging lens light path, the acquisition field of view scope of imaging lens by extender lens cell inflation, to adapt to the man face image acquiring of different height and diverse location, when the first optical filter switches in imaging lens light path, filter visible ray, to adapt to the iris image acquiring of small field of view hi-vision details.
In sum, imaging modules of the present utility model, biological identification device and mobile terminal, simultaneous adaptation can gather the visual field requirement of iris and facial image, imaging modules simple in construction and volume are little, are suitable to the use of the Miniaturized portable equipment such as mobile terminal.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of an embodiment of imaging modules of the present utility model；
Fig. 2 is the composition schematic diagram of an embodiment of biological identification device of the present utility model；
Fig. 3 is the structural representation of the embodiment one of imaging modules of the present utility model；
Fig. 4 is the structural representation of the embodiment two of imaging modules of the present utility model.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
On the one hand, this utility model embodiment provides a kind of imaging modules, as it is shown in figure 1, include: imaging lens 10, including battery of lens 002 and the diaphragm 001 of multi-disc lens composition；Changeable eyeglass mechanism 20, including extender lens unit 003 and first optical filter 004, wherein extender lens unit and the first optical filter have different optical filtering patterns；Switching mechanism 30, the extender lens unit or the first optical filter for making changeable eyeglass mechanism switches to the light path of imaging lens；Focusing mechanism 40, is used for making imaging lens focus to different focus position；And image acquiring sensor 50, it is arranged on the rear end of imaging lens.
The imaging modules simple in construction of this utility model embodiment, volume are little, are suitable to the use of the Miniaturized portable equipment such as mobile terminal.The imaging modules of the present embodiment simultaneous adaptation can gather the visual field requirement of iris and facial image, iris and the switching of man face image acquiring pattern is realized by the extender lens unit and the first optical filter switching changeable eyeglass mechanism, when extender lens unit switches in imaging lens light path, the acquisition field of view scope of imaging lens by extender lens cell inflation, to adapt to the man face image acquiring of different height and diverse location, when the first optical filter switches in imaging lens light path, filter visible ray, to adapt to the iris image acquiring of small field of view hi-vision details.
Further, the extender lens unit of the changeable eyeglass mechanism of the present embodiment includes one or more pieces lens, the wherein filter coating of one or more pieces lens plating visible light-transmissive infrared cut of light, can be a piece of in multi-disc lens, several or whole filter coating plating visible light-transmissive infrared cut of light, the filter coating of the front surface plating visible light-transmissive infrared cut of light of preferred first lens, its plated film scope can be the light transmission of 400-650nm wave band, the light cut-off of other wave band, with realize gather man face image acquiring time filtering environmental light in Infrared, prevent light from disturbing.
Further, the extender lens unit of the changeable eyeglass mechanism of the present embodiment includes the second optical filter and one or more pieces lens, wherein the second optical filter is visible light-transmissive infrared cut of light optical filter, its filter range can be the light transmission of 400-650nm wave band, the light cut-off of other wave band, second optical filter may be disposed at the front end of one or more pieces lens, rear end or centre, by the Infrared in the second optical filter filtering environmental light, to prevent light interference during man face image acquiring.
Further, first optical filter of the changeable eyeglass mechanism of the present embodiment is infrared light visible ray edge filter, its filter range can be the light transmission of 700-900nm wave band, the light cut-off of other wave band, with realize gather iris image acquiring time filtering environmental light in luminous ray, it is prevented that light disturb.
Further, the changeable eyeglass mechanism of the present embodiment is arranged between front end or the imaging lens multi-disc lens of imaging lens, it is preferably disposed on the front end of imaging lens, to simplify the structure of imaging modules, it is simple to the switching of extender lens unit and the first optical filter.
A kind of improvement as this utility model embodiment, the switching mechanism of the present embodiment includes memory metal element and voltage control unit, voltage control unit controls to be realized the deformation of memory metal element by the voltage of memory metal element, thus driving the position of extender lens unit and the first optical filter to switch.Memory metal element in the present embodiment can be shape memory allow wires, voltage control unit is mainly through to shape memory allow wires electrified regulation, when reaching uniform temperature, shape memory allow wires undergoes phase transition its shape of change, thus realizing extender lens unit and the switching of the first optical filter, the material of shape memory allow wires can be (Ti-Ni) Ultimum Ti or copper-based shape memory alloy.The switching mechanism of the present embodiment, compared to the switching mechanism of traditional magnetic-type motor or micromachine formula, utilizes " pyrocondensation is cold rises " characteristic of memory metal itself to ensure accuracy and the effectiveness of switching, and its structure is also simpler small and exquisite, and it is more convenient to control.
As the another kind of improvement of this utility model embodiment, the Focusing mechanism of the present embodiment makes imaging lens carry out the switching of focusing position at two fixing points, and wherein Focusing mechanism can be voice coil motor or memory metal motor.When the Focusing mechanism of the present embodiment is focused, the point-to-point transmission in fixed position switches so that imaging lens is focused more quick and precisely.
The structure of this utility model embodiment imaging modules is elaborated below with two specific embodiments:
Embodiment one:
As shown in figures 3 a-b, imaging modules includes: imaging lens 10 ', and it includes diaphragm 001 ' and the battery of lens 002 ' of two panels lens composition, and diaphragm is arranged at the front end of battery of lens；Changeable eyeglass mechanism 20 ', it is arranged at the front end of imaging lens 10 ', it includes extender lens unit 003 ' and first optical filter 004 ', wherein extender lens unit includes a meniscus lens and the second optical filter, second optical filter is visible light-transmissive near infrared prevention optical filter, being arranged at meniscus lens rear end, the first optical filter 004 ' is infrared light visible ray edge filter；Switching mechanism 30 ' (not shown), the extender lens unit or the first optical filter for making changeable eyeglass mechanism switches to the light path of imaging lens；Focusing mechanism 40 ' (not shown), is used for making imaging lens focus to different focus position；And image acquiring sensor 50 ', it is arranged on the rear end of imaging lens.
As shown in Figure 3A, switching mechanism 30 ' makes the first optical filter 004 ' of changeable eyeglass mechanism 20 ' switch in the light path of imaging lens 10 ', Focusing mechanism 40 ' makes imaging lens 10 ' focus to the first fixed position, namely the rear end of imaging lens 10 ' is D1 with the distance of image acquiring sensor 50 ', now whole imaging modules allows Infrared to pass through and imaging on image acquiring sensor, the acquisition field of view angle of whole imaging modules is α, wherein 30 °≤α≤40 °；As shown in Figure 3 B, switching mechanism 30 ' makes the extender lens unit 003 ' of changeable eyeglass mechanism 20 ' switch in the light path of imaging lens 10 ', Focusing mechanism 40 ' makes imaging lens 10 ' focus to the second fixed position, namely the rear end of imaging lens 10 ' is D2 with the distance of image acquiring sensor 50 ', now whole imaging modules allows luminous ray to pass through and imaging on image acquiring sensor, the acquisition field of view angle of whole imaging modules is β, wherein 100 °≤β≤120 °.
Embodiment two:
As shown in figures 4 a-b, imaging modules includes: imaging lens 10 ", it includes diaphragm 001 " and two panels lens constitute battery of lens 002 ", diaphragm is arranged at battery of lens 002 " front end；Changeable eyeglass mechanism 20 "; it is arranged between the two panels lens of imaging lens; it includes an extender lens unit 003 " and the first optical filter 004 "; wherein extender lens unit 003 " it is made up of the first lens and the second lens, first lens plating visible light-transmissive infrared cut of light filter coating, the first optical filter 004 " for infrared through visible ray edge filter；Switching mechanism 30 " (not shown), the extender lens unit or the first optical filter for making changeable eyeglass mechanism switches to the light path of imaging lens；Focusing mechanism 40 " (not shown), it is used for making imaging lens focus to different focus position；And image acquiring sensor 50 ", it is arranged on the rear end of imaging lens.
As shown in Figure 4 A, switching mechanism 30 " make changeable eyeglass mechanism 20 " the first optical filter 004 " switch to imaging lens 10 " and light path on, Focusing mechanism 40 " make imaging lens 10 " focus to the first fixed position, i.e. imaging lens 10 " rear end and image acquiring sensor 50 " distance be D1 ', now whole imaging modules allows Infrared to pass through and imaging on image acquiring sensor, the acquisition field of view angle of whole imaging modules is α ', wherein 20 °≤α '≤30 °；As shown in Figure 4 B, switching mechanism 30 " make changeable eyeglass mechanism 20 " extender lens unit 003 " switch to imaging lens 10 " and light path on, Focusing mechanism 40 " make imaging lens 10 " focus to the second fixed position, i.e. imaging lens 10 " rear end and image acquiring sensor 50 " distance be D2 ', now whole imaging modules allows luminous ray to pass through and imaging on image acquiring sensor, the acquisition field of view angle of whole imaging modules is β ', wherein 75 °≤β '≤100 °.
On the other hand, this utility model embodiment additionally provides a kind of biological identification device 3, as shown in Figure 2, including above-mentioned imaging modules 1 and control module 2, wherein controlling module 2 for controlling switching mechanism 30 and Focusing mechanism 40 according to image capture instruction, image capture instruction is for gathering iris image instruction or gathering facial image instruction；
When receiving collection iris image instruction, control module control switching mechanism and make the first optical filter switch in the light path of imaging lens, control Focusing mechanism simultaneously and make imaging lens focus to the first focusing position；When receiving collection facial image instruction, control module control switching mechanism and make extender lens unit switch in the light path of imaging lens, control Focusing mechanism simultaneously and make imaging lens focus to the second focusing position.
The biological identification device simple in construction of this utility model embodiment, easy to control, control module control switching mechanism according to image capture instruction to switch between the first optical filter and extender lens unit, and control Focusing mechanism switches between the first fixing focusing position and the second focusing position simultaneously, to meet the collection of iris image and facial image.
Another further aspect, this utility model embodiment additionally provides a kind of mobile terminal, including above-mentioned biological identification device 3.
The mobile terminal of this utility model embodiment is integrated with above-mentioned imaging modules and biological identification device, a mobile terminal can realize iris, the collection of facial image and identification simultaneously, function is more powerful, advantageously ensures that personal information security and the safety of payment of mobile terminal.
The above is preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from principle described in the utility model; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. an imaging modules, it is characterised in that including:
Imaging lens, the battery of lens constituted including multi-disc lens and diaphragm；
Changeable eyeglass mechanism, including an extender lens unit and the first optical filter, described extender lens unit and the first optical filter have different optical filtering patterns；
Switching mechanism, the extender lens unit or the first optical filter for making described changeable eyeglass mechanism switches to the light path of imaging lens；
Focusing mechanism, is used for making described imaging lens focus to different focus position；And
Image acquiring sensor, is arranged on the rear end of described imaging lens.
2. imaging modules according to claim 1, it is characterised in that the extender lens unit of described changeable eyeglass mechanism includes one or more pieces lens, the filter coating of one or more pieces lens described plating visible light-transmissive infrared cut of light.
3. imaging modules according to claim 1, it is characterised in that the extender lens unit of described changeable eyeglass mechanism includes the second optical filter and one or more pieces lens, described second optical filter is visible light-transmissive infrared cut of light optical filter.
4. imaging modules according to claim 1, it is characterised in that the first optical filter of described changeable eyeglass mechanism is infrared light visible ray edge filter.
5. imaging modules according to claim 1, it is characterised in that described changeable eyeglass mechanism is arranged between front end or the imaging lens multi-disc lens of imaging lens.
6. according to the arbitrary described imaging modules of claim 1-5, it is characterized in that, described switching mechanism includes memory metal element and voltage control unit, described voltage control unit controls to be realized the deformation of memory metal element by the voltage of memory metal element, thus driving the position of extender lens unit and the first optical filter to switch.
7. according to the arbitrary described imaging modules of claim 1-5, it is characterised in that described Focusing mechanism makes described imaging lens carry out the switching of focusing position at two fixing points.
8. imaging modules according to claim 7, it is characterised in that described Focusing mechanism can be voice coil motor or memory metal motor.
9. a biological identification device, it is characterised in that including:
Imaging modules as described in as arbitrary in claim 1-8, and
Control module, for controlling described switching mechanism and Focusing mechanism according to image capture instruction；
Described image capture instruction is for gathering iris image instruction or gathering facial image instruction；
When receiving collection iris image instruction, described control module controls described switching mechanism makes described first optical filter switch in the light path of imaging lens, controls described Focusing mechanism simultaneously and makes imaging lens focus to the first focusing position；
When receiving collection facial image instruction, described control module controls described switching mechanism makes described extender lens unit switch in the light path of imaging lens, controls described Focusing mechanism simultaneously and makes imaging lens focus to the second focusing position.
10. a mobile terminal, it is characterised in that including: biological identification device as claimed in claim 9.
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| CN201620155160.8U CN205405545U (en) | 2016-03-01 | 2016-03-01 | Imaging module , biological identification device and mobile terminal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295536A (en) * | 2016-08-02 | 2017-01-04 | 北京无线电计量测试研究所 | A kind of self-adapting type iris identification device and utilize the method that this device carries out iris identification |
| CN107274189A (en) * | 2017-06-28 | 2017-10-20 | 北京京东尚科信息技术有限公司 | A kind of method of payment and device |
| CN107426478A (en) * | 2017-08-21 | 2017-12-01 | 信利光电股份有限公司 | A kind of mobile phone and camera module |
| CN107765442A (en) * | 2016-08-17 | 2018-03-06 | 徕卡仪器（新加坡）有限公司 | Multispectral iris device |
| CN109428988A (en) * | 2017-08-23 | 2019-03-05 | 上海聚虹光电科技有限公司 | It is a kind of for the infrared band logical filter of filter switching device and its application |
-
2016
- 2016-03-01 CN CN201620155160.8U patent/CN205405545U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295536A (en) * | 2016-08-02 | 2017-01-04 | 北京无线电计量测试研究所 | A kind of self-adapting type iris identification device and utilize the method that this device carries out iris identification |
| CN106295536B (en) * | 2016-08-02 | 2019-05-03 | 北京无线电计量测试研究所 | Self-adapting type iris identification device and the method for carrying out iris recognition using the device |
| CN107765442A (en) * | 2016-08-17 | 2018-03-06 | 徕卡仪器（新加坡）有限公司 | Multispectral iris device |
| CN107765442B (en) * | 2016-08-17 | 2020-09-01 | 徕卡仪器（新加坡）有限公司 | Multispectral iris device |
| CN107274189A (en) * | 2017-06-28 | 2017-10-20 | 北京京东尚科信息技术有限公司 | A kind of method of payment and device |
| CN107274189B (en) * | 2017-06-28 | 2021-09-03 | 北京京东尚科信息技术有限公司 | Payment method and device |
| CN107426478A (en) * | 2017-08-21 | 2017-12-01 | 信利光电股份有限公司 | A kind of mobile phone and camera module |
| CN107426478B (en) * | 2017-08-21 | 2020-07-24 | 信利光电股份有限公司 | Mobile phone and camera module |
| CN109428988A (en) * | 2017-08-23 | 2019-03-05 | 上海聚虹光电科技有限公司 | It is a kind of for the infrared band logical filter of filter switching device and its application |
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