CN106412406A - Mobile phone lens - Google Patents
Mobile phone lens Download PDFInfo
- Publication number
- CN106412406A CN106412406A CN201611052330.0A CN201611052330A CN106412406A CN 106412406 A CN106412406 A CN 106412406A CN 201611052330 A CN201611052330 A CN 201611052330A CN 106412406 A CN106412406 A CN 106412406A
- Authority
- CN
- China
- Prior art keywords
- camera lens
- lens according
- mobile phone
- mobile
- loophole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
Abstract
The invention discloses a mobile phone lens which comprises an L-shaped body positioning bracket. A high-resolution lens and a positioning screw are arranged on the body positioning bracket. A number of positioning holes and flash holes are arranged in the body positioning bracket. The positioning screw fixes the body positioning bracket on a mobile phone through the positioning holes. An automatic focusing system is arranged in the lens. The mobile phone lens provided by the invention has the advantages of simple structure, reasonable design and convenient carrying, is greatly convenient for a user to take pictures, and is suitable for popularizing and applying. The picture quality is effectively improved.
Description
【Technical field】
The invention belongs to mobile phone camera technical field is and in particular to a kind of mobile lens.
【Background technology】
The pick-up lenss of mobile phone have the defect of narrow viewing angle at present, because visual angle can not be expanded when particularly auto heterodyne
And lead to photo unsightly.From the point of view of the market demand, the function such as current mobile phone shooting, two-dimensional code scanning is to mobile phone automatic focusing work(
Can there are certain requirements.High resolution, small volume, response quickly, the bit error rate be low, nearly Jiao's (scanning) to require camera lens itself have to possess
The feature fast with remote Jiao's (shooting) switch speed, common mobile phone camera is difficult to meet these requirements.
China starts late to automatic focusing camera technique research, and at present mainly based on import, high-end is more in
Blank stage, with the continuous development of smart mobile phone and technology of Internet of things, the property such as its resolution, volume, sensitivity, response speed
Requirement can all not reached index to the automatic camera function that focuses on.
【Content of the invention】
The technical problem to be solved is, for above-mentioned deficiency of the prior art, to propose a kind of belt supporting frame handss
Machine camera lens, the pick-up lenss of mobile phone is expanded and realizes automatic focusing function, using existing optical lens imaging technique, and
The photographic head generally carrying in conjunction with existing mobile phone, makes regular handset be capable of automatically focusing on.
The present invention employs the following technical solutions：
A kind of mobile lens, including L-type fuselage locating support, described fuselage locating support are provided with high-resolution lens
And Positioning screw, described fuselage locating support is additionally provided with multiple location holes and flash lamp aperture, described Positioning screw passes through institute
State location hole described fuselage locating support is fixed on mobile phone, in described camera lens, be provided with autofocus system.
Further, described autofocus system includes imageing sensor, and described image sensor and main control unit connect,
Image for obtaining described camera lens is sent to main control unit, and described main control unit passes through to drive IC and focus motor to connect,
Control focus motor by driving IC, described focus motor and described camera lens are connected to drive described camera motion.
Further, described image sensor adopts OV5642 cake core, and described main control unit adopts single-chip microcomputer or DSP micro-
Processor is core control circuit, communicates with the data transfer of mobile phone and control for completing described image sensor.
Further, it is additionally provided with WiFi module in described camera lens, described main control unit passes through described WiFi module and handss
Machine is connected.
Further, described driving IC adopts AD5820 cake core, and described focus motor is voice coil motor, described driving IC
Described voice coil motor is driven using I2C type of drive.
Further, it is additionally provided with the brake sack of circle in described camera lens, in the middle part of described brake sack, be provided with loophole, institute
State loophole medial wall and be circumferentially with the delustring dimpled grain reflective for eliminating described loophole medial wall along it.
Further, described delustring dimpled grain circumference array is arranged on the medial wall of loophole, and described delustring dimpled grain is ripple
Shape wave.
Further, described loophole is concentric with described brake sack neighboring, and described brake sack thickness is 0.08-
0.20mm.
Further, described location hole and flash lamp aperture interval setting five on described fuselage locating support respectively.
Further, described Positioning screw is the Cellphone Accessories supporting with handset earphone jack.
Compared with prior art, the present invention at least has the advantages that：
A kind of mobile lens of the present invention, by adjust Positioning screw, user can very easily by optical center axle with
The central shaft of mobile phone camera is overlapping, reaches the optimum efficiency that optics expands image, and flash lamp aperture does not interfere with mobile phone and dodges
The use of light lamp, and the flash lamp aperture of free time can install other ornaments, can increase beautiful decoration and the value of mobile phone, interior
The autofocus system put is capable of the automatic focusing of camera lens.
Further, autofocus system to control focus motor to drive the stroke displacement of camera lens with image definition, adopts
The position of camera lens when finding image definition maximum with the mode of exhaustive search, completes the action automatically focusing on.By focusing on
Motor drive and exhaustive search mode, enable to focusing accuracy and reach 5～10 μm, and response speed is less than 70ms, can meet
The requirement of mobile phone, real-time tracking and data processing can be carried out during collection image thus obtain good clear
Degree.
Further, imageing sensor adopts OV5642 cake core, and integrated level is high, and peripheral circuit is simpler, entirely automatically
Focusing system is arranged on inside camera lens 1, compact conformation, low cost, and expansibility is good, and main control chip adopts single-chip microcomputer or DSP micro-
Processor, processing speed is fast, algorithm flexibly, ensure that whole device under various complex environments can normal work, by
Main control chip calculates motor movement direction and step number according to the change of definition, effectively improves resolution, drives IC to adopt I2C
Type of drive drives voice coil motor, improves sensitivity and the response speed of system.
Further, the delustring dimpled grain of undulate is located on loophole medial wall, when light directive loophole medial wall
When upper, incident light is then carried out diffuse-reflectance by delustring dimpled grain, is prevented effectively from reflected light directive image plane, and then
Improve the quality of image.
Further, five location holes can be suitable for various sizes of mobile phone use, and Positioning screw can be with all mobile phones
Earphone jack uses cooperatively.
In sum, the structure of the present invention is simple, reasonable in design, easy to carry, brings very big to user shooting
Convenient, effectively lift photographic quality, suitable popularization and application.
Below by drawings and Examples, technical scheme is described in further detail.
【Brief description】
Fig. 1 is that the camera lens of the present invention focuses on drive system complete schematic automatically；
Fig. 2 is the camera lens autofocus system workflow diagram of the present invention；
Fig. 3 is the camera lens brake sack structural representation of the present invention；
Fig. 4 is the overall structure diagram of the present invention.
Wherein：1. camera lens；2. imageing sensor；3. main control unit；4. drive IC；5. focus motor；6. location hole；7. fixed
Position screw；8. flash lamp aperture；9. brake sack；10. loophole；11. delustring dimpled grains.
【Specific embodiment】
The invention provides a kind of mobile lens, using active automatic focusing, the range data according to measured object drives
Camera adjusting image distance, is realized automatically focusing on by the rotation direction and step number of Single-chip Controlling motor.
Refer to shown in Fig. 1 and Fig. 2, a kind of mobile lens of the present invention, including L-type fuselage locating support, described fuselage is fixed
It is provided with high-resolution lens 1 and Positioning screw 7 on the support of position, described fuselage locating support is additionally provided with multiple location holes 6
With flash lamp aperture 8, described Positioning screw 7 by described location hole 6, described fuselage locating support is fixed on mobile phone, described mirror
It is provided with autofocus system in 1.
Wherein, autofocus system specifically includes the imageing sensor 2 using OV5642 cake core, described image sensor
2 and connected using the main control unit 3 that single-chip microcomputer or DSP microprocessor are core control circuit, whole calculating process is fast, for will
The image that described camera lens 1 obtains is sent to main control unit 3, and described main control unit 3 passes through to drive IC4 and focus motor 5 to connect, and leads to
The IC4 that overdrives controls focus motor 5, and described focus motor 5 and described camera lens 1 are connected to drive described camera lens 1 to move.Master control
Unit 3 is communicated with the data transfer of mobile phone and control for completing described image sensor 2.
It is additionally provided with WiFi module, described main control unit 3 is connected with mobile phone by described WiFi module in described camera lens 1,
Described focus motor 5 is voice coil motor, and the driving IC4 of described AD5820 adopts I2C type of drive to drive described voice coil motor.
Mobile telephone external camera lens autofocus system is by high-resolution lens 1, imageing sensor 2, focus motor 5 (voice coil loudspeaker voice coil horse
Reach), drive this several parts composition of IC4 and rear end main control unit 3, its operation principle is：
In focus motor 5 motor process, imageing sensor 2 constantly obtains image by camera lens 1；Then, by rear end master
Control unit 3 carries out to image processing raising image definition；Then, definition maximum is found using focused search algorithm；?
Afterwards, main control unit 3 calculates the direction of motion and the step number of focus motor 5 according to the change of definition, is driven by controlling
IC4, thus driving focus motor 5 to drive camera lens 1 to move towards at definition maximum, if once not reaching maximum,
Reduce the step pitch of focus motor 5, return execution, until completing focusing.
Autofocus system comprises the control to the control of imageing sensor 2 with to focus motor 5 for the main control unit 3, mainly
Including following three aspects：One is the selection of focusing window, and two is the definition values calculating in focusing window, and three is search definition
Maximum of points, whole autofocus system workflow is as follows：
System carries out initial work first, then enters data acquisition and calculation stages.Using multizone selection algorithm
Choose focusing window, sharpness evaluation function calculating is carried out to selected areas, letter is evaluated as focusing on using energy gradient function
Number, that is, after the completion of data acquisition, calculates the quadratic sum of the gray scale difference value of neighbor at once, and the data acquisition of a two field picture is all complete
Cheng Hou, the gray scale difference value quadratic sum of every one-row pixels is added up, just obtains the autofocus evaluation function of this two field picture.Using whole process
Searching algorithm is focused searching for, and focus motor 5 drives camera lens 1 first to walk a whole process with unique step, and focus motor 5 often walks one
Step, system all carries out data acquisition and autofocus evaluation function calculates, by the focus motor at the maximum of autofocus evaluation function
Step number is recorded, and then focus motor 5 is advanced towards at maximum autofocus evaluation function value with a larger step-length, close
Behind whole maximum autofocus evaluation function region, focus motor 5 step-length is reduced, searches further for more accurate in maximum region
Focal position, until camera lens 1 stops at autofocus evaluation function maximum, make system complete accurately to focus on, when focusing on every time
Between be respectively less than 70ms.
Increase (reduction) with current value, focusing moves according to corresponding rule, due to will overcome the pre- of load-carrying object lens
Pressure, motor need certain starting current could setting in motion, preferably starting current is 30mA, and subsequent motor is according to big
The step pitch setting in motion (step pitch can be configured by driving the control program of IC) of about 5um/mA, when electric current reaches 80mA,
Stroke reaches maximum 0.21mm (different according to motor performance, stroke maximum is otherwise varied).Result above shows, master control list
Unit, by controlling imageing sensor to driving IC to send the data specifying rule, can control focus motor to occur stroke displacement dynamic
Make.
Sharpness computation is carried out using each area image of energy gradient function pair, before calculating image definition, to figure
The pretreatment of picture is extremely important, especially the denoising to image.OV5642 carries image processor, and this image processor is integrated
Filtering algorithm, can achieve denoising by arranging corresponding registers, the design has been respectively adopted climbing method and exhaustive search is calculated
Method controls camera module to be focused searching for, and have recorded focusing window when same camera module focuses under different searching algorithms
Interior definition values.
Following table is each region definition values under ramping constraint
Following table is each region definition values under exhaustive search algorithm
When taking each focusing, the minima in each region is focus angle value, as can be seen from the above table, using whole process
The definition values of searching algorithm are generally higher than the focus angle value obtained by hill-climbing algorithm, and focal time is very nearly the same.
It is additionally provided with the brake sack 9 of circle in described camera lens 1, in the middle part of described brake sack 9, be provided with loophole 10, described
Unthreaded hole 10 medial wall is circumferentially with the delustring dimpled grain 11 reflective for eliminating described loophole 10 medial wall along it.Described delustring is recessed
Stricture of vagina 11 circumference array is arranged on the medial wall of loophole 10, and described delustring dimpled grain 11 is waveform.Described loophole 10 and institute
State brake sack 9 neighboring with one heart, described brake sack 9 thickness is 0.08-0.20mm.
It is circumferentially with delustring dimpled grain in loophole medial wall along it, delustring dimpled grain can be with undulate, when light directive is saturating
When on unthreaded hole medial wall, incident light is then carried out diffuse-reflectance by delustring dimpled grain, is prevented effectively from reflected light directive image
In plane, and then improve the quality of image.
Described location hole 6 and flash lamp aperture 8 interval setting five on described fuselage locating support respectively.Described positioning spiral shell
Nail 7 is the Cellphone Accessories supporting with handset earphone jack.
User can be very easily overlapping with the central shaft of mobile phone camera by optical center axle, reaches optics and expands shadow
The optimum efficiency of picture, and other ornaments are installed by the flash lamp aperture on mobile phone locating support, the dress of mobile phone can be increased
Decorations aesthetic property and value.
Above content technological thought only to illustrate the invention, it is impossible to limit protection scope of the present invention with this, every is pressed
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, each fall within claims of the present invention
Protection domain within.
Claims (10)
1. a kind of mobile lens, it is characterised in that including L-type fuselage locating support, described fuselage locating support are provided with height
Resolution camera lens (1) and Positioning screw (7), described fuselage locating support is additionally provided with multiple location holes (6) and flash lamp aperture
(8), described Positioning screw (7) by described location hole (6), described fuselage locating support is fixed on mobile phone, described camera lens
(1) it is provided with autofocus system in.
2. a kind of mobile lens according to claim 1 are it is characterised in that described autofocus system includes image sensing
Device (2), described image sensor (2) and main control unit (3) connect, and the image for obtaining described camera lens (1) is sent to master
Control unit (3), described main control unit (3) passes through to drive IC (4) and focus motor (5) to connect, and is focused on by driving IC (4) to control
Motor (5), described focus motor (5) and described camera lens (1) are connected to drive described camera lens (1) to move.
3. a kind of mobile lens according to claim 2 are it is characterised in that described image sensor (2) adopts OV5642
Cake core, it is core control circuit that described main control unit (3) adopts single-chip microcomputer or DSP microprocessor, is used for completing described image
Sensor (2) is communicated with the data transfer of mobile phone and control.
4. a kind of mobile lens according to claim 3 are it is characterised in that be additionally provided with WiFi mould in described camera lens (1)
Block, described main control unit (3) is connected with mobile phone by described WiFi module.
5. a kind of mobile lens according to claim 2 are it is characterised in that described driving IC (4) adopts AD5820 core
Piece, described focus motor (5) is voice coil motor, and described driving IC (4) adopts I2C type of drive to drive described voice coil motor.
6. a kind of mobile lens according to claim 1 are it is characterised in that be additionally provided with circle in described camera lens (1)
Brake sack (9), is provided with loophole (10) in the middle part of described brake sack (9), described loophole (10) medial wall is circumferentially with along it
The delustring dimpled grain (11) reflective for eliminating described loophole (10) medial wall.
7. a kind of mobile lens according to claim 6 are it is characterised in that described delustring dimpled grain (11) circumference array is arranged
On the medial wall of loophole (10), described delustring dimpled grain (11) is waveform.
8. a kind of mobile lens according to claim 7 are it is characterised in that described loophole (10) and described brake sack
(9) neighboring is concentric, and described brake sack (9) thickness is 0.08-0.20mm.
9. a kind of mobile lens according to claim 1 are it is characterised in that described location hole (6) and flash lamp aperture (8) divide
Interval setting five not on described fuselage locating support.
10. a kind of mobile lens according to claim 1 are it is characterised in that described Positioning screw (7) is and handset earphone
The supporting Cellphone Accessories of jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052330.0A CN106412406A (en) | 2016-11-24 | 2016-11-24 | Mobile phone lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052330.0A CN106412406A (en) | 2016-11-24 | 2016-11-24 | Mobile phone lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106412406A true CN106412406A (en) | 2017-02-15 |
Family
ID=58082821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611052330.0A Pending CN106412406A (en) | 2016-11-24 | 2016-11-24 | Mobile phone lens |
Country Status (1)
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| CN (1) | CN106412406A (en) |
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2016
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Application publication date: 20170215 |