CN208834326U - A kind of iris image extraction element based on liquid lens and VCM - Google Patents
A kind of iris image extraction element based on liquid lens and VCM Download PDFInfo
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- CN208834326U CN208834326U CN201821799535.XU CN201821799535U CN208834326U CN 208834326 U CN208834326 U CN 208834326U CN 201821799535 U CN201821799535 U CN 201821799535U CN 208834326 U CN208834326 U CN 208834326U
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Abstract
The utility model discloses a kind of iris image extraction element based on liquid lens and VCM, including image processor and liquid lens, liquid lens is mounted on the front end of tight shot, tight shot is mounted in the intermediate throughholes on VCM motor, finally VCM motor is mounted on above imaging sensor, constitutes the preposition component of Image Acquisition；It drives IC, ambient light sensor and range sensor successively on circuit board of the integrated installation inside the image processor, forms the postpositive disposal component of Image Acquisition.The present apparatus is a closed loop acquisition device of integrated CMOS/ccd image sensor, liquid lens, VCM motor assist, motor driven IC, MCU, ambient light sensor, range sensor, LightControl light source control unit composition, the problems such as relatively high bad of the fixed-focus acquisition method of the band limit range unit of very good solution at present on the market, acquisition method of manually focusing, the requirement to environment light causes fogging image problem, and environment light is too bright and too shadow is loud.
Description
Technical field
The present invention relates to a kind of iris image extraction elements, more particularly to a kind of iris based on liquid lens and VCM
Image acquiring apparatus.
Background technique
Iris is externally visible, while being interior tissue again, and iris recognition is wrong in various biological feather recognition methods
Accidentally rate is minimum, can achieve millionth precision, but the inconvenient and expensive and volume used due to it compared with
It is limited by more use greatly.There are more families to be dedicated to the company of iris recognition product, but public affairs domestic at present in China market
External product is acted on behalf of mostly by department, and can voluntarily producing the manufacturer of iris recognition product, only several families, technical characterstic are as follows:
1. the fixed-focus acquisition method with limit range unit: this method is a fixation before allowing picker to stick on camera lens
On device, iris position is on the focussing plane of lens imaging, then collects iris image with camera.It is this
The camera lens majority of acquisition device is tight shot, and each user is due to own physiological difference and the position difference to recline,
Cause the iris position of eyes not sometimes to be in imaging and focusing plane well, keeps the iris image got not clear enough
It is clear, affect discrimination.This acquisition device also has minority to realize automatic focusing function in the way of stepper motor, still, this
Kind mode is at high cost, and volume is big.
2. artificial focusing acquisition method: this method is given user in the previous lesser focusing range of camera lens, allows use
Person watches camera lens attentively within this range and is moved forward and backward, and is until device collects a relatively clear iris image
Only.The obvious disadvantage of this method is exactly that its focusing mode is not humanized enough, it is desirable that user constantly adjusts the position of oneself
Clearly iris image can be adopted, and is affected by ambient light, is likely to if it is a unfamiliar user
It takes a long time to focus and can just collect a width clearly image.
It can be seen that the iris image that fixed-focus acquisition method with stopper acquires sometimes is not clear enough, discrimination is influenced.
Even presently, there are stepper motor mode auto-focusing acquisition device there is also at high cost, bulky problem, limitation
The popularization of iris technology.And artificial focusing mode brings inconvenience to user, this mode acquired image is not
It is enough clear, discrimination can also be influenced.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of based on the extraction of the iris image of liquid lens and VCM
Device, it is not clear enough to can solve the iris image that fixed-focus acquisition method with stopper acquires sometimes, influences discrimination, and artificial
Focusing mode to user bring inconvenience, not clear enough the problem of acquired image again.
In order to solve the above technical problems, the invention provides the following technical scheme:
A kind of iris image extraction element based on liquid lens and VCM, including image processor, imaging sensor, ring
Border optical sensor, range sensor, driving IC, VCM motor, tight shot, liquid lens and light source controller, the liquid are saturating
Mirror is mounted on the front end of tight shot, and the tight shot is mounted in the intermediate throughholes on VCM motor, finally by the VCM
Motor is mounted on above imaging sensor, constitutes the preposition component of Image Acquisition；The driving IC integrated installation is at image
It manages on the circuit board inside device, the ambient light sensor and range sensor are connected in image processor by FPC winding displacement
On portion's circuit board, the postpositive disposal component of Image Acquisition has been sequentially formed；Described image processor by driving IC respectively with VCM
Motor, tight shot and liquid lens control connection, described image processor respectively with ambient light sensor, range sensor,
Imaging sensor is connected with light source controller signal.
As a preferred technical solution of the present invention: described image sensor is cmos image sensor or ccd image
Sensor.
As a preferred technical solution of the present invention: the light source controller is to be combined by the infrared lamp bead of N wavelength
Light source by pwm signal connect with processing board form light source controller unit.
As a preferred technical solution of the present invention: described image processor Built-in Image processor algorithm, automatic right
Burnt algorithm, light source adjust algorithm, VCM control algolithm and liquid lens control algolithm.
As a preferred technical solution of the present invention: described image processor by 12C signal cable respectively with environment
Optical sensor, range sensor, imaging sensor are connected with light source controller signal.
Compared with prior art, the attainable beneficial effect of the present invention is:
Iris image extraction element of the invention is that integrated CMOS/ccd image sensor, liquid lens, VCM motor are auxiliary
It helps, one that motor driven IC, MCU, ambient light sensor, range sensor, LightControl light source control unit form
Closed loop acquisition device, the fixed-focus acquisition method of the band limit range unit of very good solution at present on the market, artificial focusing acquire
The problems such as relatively high bad of method, the requirement to environment light causes fogging image problem, and environment light is too bright and too shadow is rung；Benefit
Solved with the advantage of VCM motor process itself at high cost, bulky problem, liquid lens can make up current tight shot
The small problem of the depth of field, LightControl control unit solves the problems, such as ambient brightness.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of extraction element of the present invention；
Fig. 2 is the systematic schematic diagram of extraction element of the present invention；
Wherein: 1, image processor；2, imaging sensor；3, ambient light sensor；4, range sensor；5, IC is driven；
6, VCM motor；7, tight shot；8, liquid lens；9, light source controller.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
It please refers to shown in Fig. 1-2, the present invention provides a kind of iris image extraction element based on liquid lens and VCM,
Including image processor 1, imaging sensor 2, ambient light sensor 3, range sensor 4, driving IC5, VCM motor 6, fixed-focus mirror
First 7, liquid lens 8 and light source controller 9, liquid lens 8 are mounted on the front end of tight shot 7, the other end of tight shot 7
Light source controller 9 is installed, tight shot 7 is mounted in the intermediate throughholes on VCM motor 6, is finally mounted on VCM motor 6
Above imaging sensor 2, the preposition component of Image Acquisition is constituted；Drive electricity of the IC5 integrated installation inside image processor 1
On the plate of road, ambient light sensor 3 and range sensor 4 are connected on 1 internal circuit board of image processor by FPC winding displacement, according to
The secondary postpositive disposal component for foring Image Acquisition；Image processor 1 by driving IC5 respectively with VCM motor 6, tight shot 7
With liquid lens 8 control connect, image processor 1 respectively with ambient light sensor 3, range sensor 4, imaging sensor 2 and
The connection of 9 signal of light source controller.
Imaging sensor 2 is cmos image sensor or ccd image sensor.Light source controller 9 is by the infrared of N wavelength
Lamp bead is combined into the light source controller unit being made up of pwm signal light power.1 Built-in Image processor of image processor is calculated
Method, auto-focusing algorithm, light source adjust algorithm, VCM control algolithm and liquid lens control algolithm.Image processor 1 passes through
12C signal cable is connect with ambient light sensor 3, range sensor 4, imaging sensor 2 and 9 signal of light source controller respectively.
With liquid lens than existing advantage:
No abrasion: 400,000,000 cycleoperation tests have been passed through；
Quick: 10 frames or so are realized under accurate focusing o open loop mode less than 50 milliseconds under no setting time closed loop mode
Focusing time；
It is sturdy and durable: impayable resistance to mechanical impact capacity！(2000g/0.25ms/100 times, two-way)；
The microspur ability of microspur: less than 5 centimetre；
It is accurate: low hesitation；
It is convenient to integrate: can be used as the integration of camera lens add-on adapter；
Low-power consumption: lens power consumption < 1mW itself (uses driving IC total power consumption about 15mW)；
It is quiet: without the crosstalk focused between motor and microphone in conventional video systems.
The advantages that VCM motor has than existing stepper motor, small in size, mute, revolving speed block, low in energy consumption.
Liquid lens 8 is mounted on above tight shot 7, and tight shot 7 will be mounted on above VCM motor 6, finally
VCM motor 6 is mounted on above imaging sensor 2, the preposition component of image zooming-out is constituted, then by by image processor
1 carries out auto-focusing calculating according to the image that the value of range sensor 4 and preposition component return, and then passes through driving IC5 control
VCM motor 6 and liquid lens 8 processed, are adjusted the acquisition quality of image.Image processor 1 is according to 3 pairs of light of ambient light sensor
The adjusting of the progress brightness of source controller 9.It thus can be with the change of distance, the variation of environment light, the matter of present image
Amount carries out automatically adjusting the picture quality to be optimal.
Image processor 1 carries out the interaction of control signal by I2C signal and CMOS or ccd image sensor, then
The transmission of RGB image is carried out with data line by data0..data1..data7,8.Image processor 1 passes through I2C signal simultaneously
It is communicated with ambient light sensor 3 and range sensor 4, obtains the illuminance and human body distance of current ambient environmental in real time
The far and near value of acquisition device, then by auto-focusing algorithm, image definition quality evaluation algorithm carries out the value of return
Then calculation processing passes through driving IC 5 and controls liquid lens 8 and the work of VCM motor 6 respectively, to adjust the focal length of optical lens
With the size and distance of aperture, and the power of light source is adjusted by pwm pulse signal to change into light by image processor 1
The brightness for learning camera lens, finally collects the high image of quality.
Iris image extraction element of the invention is that integrated CMOS/ccd image sensor, liquid lens, VCM motor are auxiliary
It helps, one that motor driven IC, MCU, ambient light sensor, range sensor, LightControl light source control unit form
Closed loop acquisition device, the fixed-focus acquisition method of the band limit range unit of very good solution at present on the market, artificial focusing acquire
The problems such as relatively high bad of method, the requirement to environment light causes fogging image problem, and environment light is too bright and too shadow is rung；Benefit
Solved with the advantage of VCM motor process itself at high cost, bulky problem, liquid lens can make up current tight shot
The small problem of the depth of field, LightControl control unit solves the problems, such as ambient brightness.
The implementation of the present invention is not limited to this, and above-described embodiment content according to the invention utilizes the routine of this field
Technological know-how and customary means, under the premise of not departing from above-mentioned basic fundamental thought of the invention, preferred embodiment above can be with
The modification, replacement or combination of other diversified forms are made, other embodiments obtained all fall within rights protection scope of the present invention
Within.
Claims (5)
1. a kind of iris image extraction element based on liquid lens and VCM, including image processor (1), imaging sensor
(2), ambient light sensor (3), range sensor (4), driving IC (5), VCM motor (6), tight shot (7), liquid lens
(8) and light source controller (9), which is characterized in that the liquid lens (8) is mounted on the front end of tight shot (7), the fixed-focus
Camera lens (7) is mounted in the intermediate throughholes on VCM motor (6), and the VCM motor (6) is finally mounted on imaging sensor (2)
Above, the preposition component of Image Acquisition is constituted；Driving IC (5) integrated installation circuit internal in image processor (1)
On plate, ambient light sensor (3) and range sensor (4) are connected to image processor (1) internal circuit board by FPC winding displacement
On, sequentially form the postpositive disposal component of Image Acquisition；Described image processor (1) is electric with VCM respectively by driving IC (5)
Machine (6), tight shot (7) and liquid lens (8) control connection, described image processor (1) respectively with ambient light sensor
(3), range sensor (4), imaging sensor (2) are connected with light source controller (9) signal.
2. a kind of iris image extraction element based on liquid lens and VCM according to claim 1, which is characterized in that
Described image sensor (2) is cmos image sensor or ccd image sensor.
3. a kind of iris image extraction element based on liquid lens and VCM according to claim 1, which is characterized in that
The light source controller (9) is to be combined into the light source controller being made up of pwm signal light power by the infrared lamp bead of N wavelength
Unit.
4. a kind of iris image extraction element based on liquid lens and VCM according to claim 1, which is characterized in that
Described image processor (1) Built-in Image processor algorithm, auto-focusing algorithm, light source adjust algorithm, VCM control algolithm and liquid
Somascope head control algolithm.
5. a kind of iris image extraction element based on liquid lens and VCM according to claim 1, which is characterized in that
Described image processor (1) by 12C signal cable respectively with ambient light sensor (3), range sensor (4), image sensing
Device (2) is connected with light source controller (9) signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821799535.XU CN208834326U (en) | 2018-11-02 | 2018-11-02 | A kind of iris image extraction element based on liquid lens and VCM |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201821799535.XU CN208834326U (en) | 2018-11-02 | 2018-11-02 | A kind of iris image extraction element based on liquid lens and VCM |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101959A (en) * | 2018-11-02 | 2018-12-28 | 张彦龙 | A kind of iris image extraction element based on liquid lens and VCM |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101959A (en) * | 2018-11-02 | 2018-12-28 | 张彦龙 | A kind of iris image extraction element based on liquid lens and VCM |
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