CN2909319Y - Automatic focusing camera lens module - Google Patents
Automatic focusing camera lens module Download PDFInfo
- Publication number
- CN2909319Y CN2909319Y CN200620070746.0U CN200620070746U CN2909319Y CN 2909319 Y CN2909319 Y CN 2909319Y CN 200620070746 U CN200620070746 U CN 200620070746U CN 2909319 Y CN2909319 Y CN 2909319Y
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- automatic focusing
- wiring board
- outer ring
- camera module
- image sensor
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Abstract
An automatic focus cameral module includes an image sensor, lens subassembly, base and circuit board; the base consists of an external ring, internal ring, flexible supporting mechanism and retractable guide mechanism, the external ring is disposed with a magnetic cylinder, an external winding and circular working air gap; the internal ring consists of lens subassembly supporting lens and internal winding; the internal ring is embedded on the outside of the external ring by the flexible supporting mechanism and retractable guide mechanism and the internal winding is disposed in the working air gap to form a focus motor mechanism; the circuit board is disposed with a motor control, the internal winding and external winding are separately electrically connected with the output end of the motor control, the motor control outputs DC which produces magnetic field between the external ring and internal ring. The utility model is designed with a small volume and applied to portable equipment such as mobile, palm computer, notebook computer, etc., in this way, the objective that these equipment has the function of automatic focus cameral or photographing without increasing the portable equipment volume.
Description
Technical field
The utility model relates to the shooting camera arrangement, particularly a kind of portable sets such as mobile phone, palm PC, notebook computer of being applicable to, but and the small-sized or minisize pick-up head module of automatic focusing.
Background technology
In recent years, people combine optical lens and imageing sensor (CCD or CMOS) becomes a kind of small-sized optical digital image transitions module, i.e. camera module.Be applied to make on the portable sets such as mobile phone, palm PC, notebook computer these existing mouths that produce to be with digital photographing/camera function this camera module.This portable set that has photograph/camera function is once release, just has been subjected to liking and pursuing of users.
From pick-up lens development, focus, three kinds of manual focusing and automatic focusings.Cameras with fixed focus can only be taken the scenery that certain distance is arranged normally apart, close shot just cannot shooting clear, particularly the gap of camera close shot more than the mega pixel and distant view focal length is bigger, therefore should just must be with the focusing function by the above camera of mega pixel; And manually and the automatic focusing module have focus control, can satisfy the demand of many focal lengths capture, it is more advanced wherein to belong to the automatic focusing camera again, use more convenient, suitable common amateur photographer's use.
General cameras with fixed focus module mainly is made up of lens assembly (lens), pedestal (holder), imageing sensor (CCD or CMOS) and wiring board, lens assembly is corresponding with the photosensitive region of imageing sensor by pedestal, and together is assembled on the wiring board; Imageing sensor is electrically connected with internal circuit on the wiring board, and imageing sensor and wiring board convert the light signal that collects to data image signal, is connected with peripherals (as the mobile phone main body) by the connector on the wiring board again.
And traditional automatic focusing camera module is to have increased focus adjusting mechanism on the basis of above-mentioned cameras with fixed focus module, this focus adjusting mechanism is to be moved by the gearing of stepping motor drive camera lens and camera lens, its complex structure is by electric motor, several combinations such as gearing of camera lens (gear set or leading screw and nut mechanism) and camera lens form, and control also is to need 2 groups of above control signals (forward and reverse voltage group), want 4 above wiring points to go to control the motor action at least, volume is bigger, can't be adapted to the small and exquisite requirement of portable equipment, therefore be difficult to it is applied on the portable set, cause present most of mobile phone, palm PC, what still adopt on the portable sets such as notebook computer is the cameras with fixed focus module, does not possess the focusing function.
In sum, comply with the market demand, we need a kind of volume small and exquisite, are fit to be applied to the automatic focusing camera module on the portable sets such as mobile phone, palm PC, notebook computer.
Summary of the invention
The utility model purpose provides the small and exquisite automatic focusing camera module of a kind of volume, be applied to this on portable sets such as mobile phone, palm PC, notebook computer, reaching both increases the portable set volume not significantly, makes it to have the purpose of automatic focusing photograph/camera function again.
For achieving the above object, the technical solution adopted in the utility model is: a kind of automatic focusing camera module comprises image sensor, lens assembly, pedestal and wiring board; Image sensor is arranged on the wiring board, is electrically connected with wiring board; Lens assembly is arranged at the dead ahead of the photosensitive region of image sensor by pedestal, its innovative point in:
Described pedestal is made up of outer ring, inner ring, elastic support structure and flexible guide frame, and the outer ring is fixing in the circuit board, comprises magnetic cylinder and external coil in the outer ring, and is provided with the annular working air gap; Inner ring is made up of the lens bracket of support lens assembly and the Inside coil that is wound on the lens bracket; Inner ring is embedded in the outer ring by elastic support structure and flexible guide frame, and Inside coil is arranged in the working gas gap of outer ring, constitutes a focusing motor configuration with this;
Also be provided with a motor controller on the wiring board, Inside coil and external coil via line plate are electrically connected with the motor controller output terminal respectively, the motor controller output DC produces reverse each other magnetic field between outer ring and inner ring, and flexible by the size generation electric power driving inner ring and the lens assembly of control output DC.
Related content in the technique scheme is explained as follows:
1, in the such scheme, produce reverse each other magnetic field on the outer ring of described focusing motor and the inner ring, by existing electromagnetic principle as can be known, the direction that electromagnetic induction produces magnetic field be by coil around to coil midstream through the sense of current decision, therefore this programme comprises that following dual mode: a, Inside coil and external coil are opposite around the coiling direction, and on Inside coil and external coil, add that (upper end as Inside coil and external coil all connects positive pole to the identical direct current of polarity, the lower end all connects negative pole), thus the opposite magnetic field of polarization; B, Inside coil and external coil are identical around the coiling direction, and add opposite polarity direct current on Inside coil and external coil, thus the opposite magnetic field of polarization.
Preferred plan is: the coiling direction of described Inside coil and external coil is identical; The tail end of Inside coil is connected with the tail end of external coil, and the via line plate earthing; Then as the control electric signal input end, the via line plate is connected with the positive-negative output end of motor controller respectively the head end of Inside coil and external coil, feeds opposite polarity electric current.
2, in the such scheme, also be provided with connector on the described wiring board, the connector on image sensor, the equal via line plate of motor controller is connected with peripherals.
3, in the such scheme, described elastic support structure specifically can adopt following scheme: elastic support structure is made of preceding reed group and back reed group, circumferential uniform being supported between inner ring upside and the outer ring of each reed in the preceding reed group, circumferential uniform being supported between inner ring downside and the outer ring of each reed in the back reed group; The preceding reed group has here mainly played when the end back focusing motor of taking pictures is not worked, make the effect of contracting and resetting in inner ring and the lens assembly, back reed group plays the effect of buffering when resetting, when zoom motor is failure to actuate, inner ring is the support by preceding reed group and back reed group all the time, be positioned in the working gas gap of outer ring, constitute original state.
4, in the such scheme, in order to limit the direction of action of inner ring, only in the outer ring, make stretching motion up and down, therefore flexible guide frame must be set between inner ring and outer ring, the concrete scheme of taking of the flexible guide frame here can be as follows: the lens bracket week of described inner ring upwards is provided with guiding rib, correspondence is provided with gathering sill on the inner edge of outer ring, and guiding rib cooperates the flexible guide frame of formation with gathering sill.
5, in the such scheme, described motor controller specifically is one directly to have write the current controller of zoom control program, it is made of single-chip microcomputer and peripheral circuit, in other words it is exactly a control circuit, particular circuit configurations and the program that writes are prior art, can be with reference to the control circuit in the automatic focusing camera module of existing employing step motor type.
6, in the such scheme, described image sensor is the COMS image sensor, the COMS image sensor full name here is complementarity matal-oxide semiconductor imageing sensor (the English Complementary Metal-Oxide Semiconductor of being), this camera module is used for portable equipments such as mobile phone, consider from cost and price, adopt the COMS image sensor preferable.
7, in the such scheme, described image sensor also may adopt CCD (electric charge coupling) image sensor certainly.
8, in the such scheme, described wiring board is that FPCB flexible circuit board or PCB printed-wiring board (PWB) all can.
9, in the such scheme, described " inner ring ", " outer ring " i.e. be " pedestal ", can be cylindrical or cubic cylindricality in shape.
The utility model principle of work is: the utility model improves the former pedestal that focuses in the camera module and has been designed to the focusing motor configuration that mainly is made of inner ring and outer ring, directly flexible by motor controller with programmed control inner ring and the lens assembly that is connected on the inner ring, adjust the distance between lens assembly and image sensor photosensitive region, thereby play focusing action; Save labyrinths such as a series of stepper motors in the existing automatic focusing camera module and gearing, volume reduces greatly.
Referring to accompanying drawing 4, shown in the accompanying drawing 5, the principle of work of focusing motor is: case of internal coil 9 is identical with external coil 7 coiling directions, inner ring 5 and lens assembly 2 are not in original state as shown in Figure 4 when under normal circumstances not taking pictures, in the time will taking pictures, peripherals (as mobile phone) sends starting command through connector 12 to motor controller 10, make it to focusing in the motor 11 Inside coil 9 and external coil 7 in feed opposite polarity direct current, as the positive current of flowing through in the external coil 7, in working gas gap, produced the direct current stationary magnetic field of forward because of galvanomagnetic effect, and the negative current of flowing through in the Inside coil 9, the direct current stationary magnetic field interaction of the forward among this negative current and the working gas gap has produced an electric power, and (negative current of supply moving-coil is big more, this electric power is just big more), the elastic force of reed group protruded upward motion before this electric power promotion inner ring 5 and support lens assembly 2 thereon overcame, as shown in Figure 5; At this moment, the program of motor controller is carried out computing, and when image arrived the best, motor controller locked the position of inner ring 5 with regard to the current value of constant supply Inside coil 9, thereby realized automatic focusing.After having clapped, peripherals (as mobile phone) sends to motor controller 10 through connector 12 and ceases and desist order, motor controller 10 stops to 11 power supplies of focusing motor, electromagnetic action in inner ring 5 and the outer ring 4 disappears, inner ring 5 and the lens assembly 2 that supports thereon reset in the withdrawal outer ring 4 because of the elastic force effect of preceding reed group, be back to original state, again as shown in Figure 4; Just power consumption of module when taking pictures so only is not power consumption in the time of no, comparatively power saving.
The utility model control program writes direct in the motor controller 10, takes 10 centimetres of actions to the infinite distance by motor controller 10 controls.
The utility model compared with prior art has following advantage:
The utility model has adopted special focusing motor configuration, direct controlling and driving lens assembly moving linearly is flexible, reach focusing action, substitute the mode in the former automatic focusing camera module by stepper motor drive gear train (gear set or leading screw and nut mechanism), save gear train, reduced volume greatly and reduced cost, so it is more suitable for being applied in mobile phone, palm PC, notebook computer etc. and has on the portable equipment of small and exquisite requirement.And, gathered motor controller in the utility model module, program is write direct in the motor controller, reaches automatic focusing effect quickly and accurately.
Description of drawings
Accompanying drawing 1 is a decomposing schematic representation of the present utility model;
Accompanying drawing 2 is a contour structures synoptic diagram one of the present utility model;
Accompanying drawing 3 is a contour structures synoptic diagram two of the present utility model;
Accompanying drawing 4 is a sectional structure synoptic diagram one of the present utility model, the not flexible original state of expression lens assembly among the figure;
Accompanying drawing 5 is a sectional structure synoptic diagram two of the present utility model, the state after the expression lens assembly stretches out among the figure;
Accompanying drawing 6 is the utility model integrated circuit wiring schematic diagram.
In the above accompanying drawing: 1, image sensor; 2, lens assembly; 3, wiring board; 4, outer ring; 5, inner ring; 6, magnetic cylinder; 7, external coil; 8, lens bracket; 9, Inside coil; 10, motor controller; 11, focusing motor; 12, connector; 13, reed; 14, reed; 15, conductive junction point.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: shown in accompanying drawing 1～6, a kind of automatic focusing camera module comprises CMOS image sensor 1, lens assembly 12, pedestal and wiring board 3; CMOS image sensor 1 is arranged on the wiring board 3, is electrically connected with wiring board 3; Lens assembly 2 is arranged at the dead ahead of the photosensitive region of CMOS image sensor 1 by pedestal; Described pedestal is made up of outer ring 4, inner ring 5, elastic support structure and flexible guide frame, and outer ring 4 is fixed on the wiring board 3, comprises magnetic cylinder 6 and external coil 7 in the outer ring 4, and is provided with the annular working air gap; Inner ring 5 is made up of the lens bracket 8 of support lens assembly 2 and the Inside coil 9 that is wound on the lens bracket 8; Inner ring 5 is embedded in outer ring 4 by elastic support structure and flexible guide frame, and Inside coil 9 is arranged in the working gas gap of outer ring 4, constitutes a focusing motor 11 structures with this; Also be provided with a motor controller 10 on the wiring board 3, Inside coil 9 and external coil 7 via line plates 3 are electrically connected with motor controller 10 output terminals respectively, motor controller 10 output DCs produce reverse each other magnetic field between outer ring 4 and inner ring 5, and flexible by the size generation electric power driving inner ring 5 and the lens assembly 2 of control output DC.
Also be provided with connector 12 on the described wiring board 3, the connector 12 on COMS image sensor 1, the motor controller 10 equal via line plates 3 is connected with peripherals.Described elastic support structure constitutes each reed 13 circumferential uniform being supported between inner ring 5 front sides and the outer ring 4 in the preceding reed group, each reed 14 circumferential uniform being supported between inner ring 5 rear sides and the outer ring 4 in the back reed group by preceding reed group and back reed group.8 weeks of lens bracket of described inner ring 5 upwards are provided with guiding rib, and correspondence is provided with gathering sill on the inner edge of outer ring 4, and guiding rib cooperates the flexible guide frame of formation with gathering sill.
Described motor controller 10 specifically is that a kernel is the chip of single-chip microcomputer 8051 for the current controller of the control program that writes direct.Described wiring board 3 is the FPCB flexible circuit board.
Specifically, the mode of connection of each element of this module is referring to shown in the accompanying drawing 6, and VCM1 is an external coil 9 among the figure, and VCM2 is an Inside coil 7, and J1 is a connector 12, and U6 is a motor controller 10, and U1 is a COMS image sensor 1.The coiling direction of described Inside coil VCM2 and external coil VCM1 is identical; Inside coil VCM2 tail end is connected with the tail end of external coil VCM1, and via line plate 3 ground connection; Then as the control electric signal input end, via line plate 3 is connected with the positive-negative output end of motor controller 10 respectively the head end of Inside coil VCM2 and external coil VCM1, feeds opposite polarity electric current.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (10)
1, a kind of automatic focusing camera module comprises image sensor [1], lens assembly [2], pedestal and wiring board [3]; Image sensor [1] is arranged on the wiring board [3], is electrically connected with wiring board [3]; Lens assembly [2] is arranged at the dead ahead of the photosensitive region of image sensor [1] by pedestal, it is characterized in that:
Described pedestal is made up of outer ring [4], inner ring [5], elastic support structure and flexible guide frame, and outer ring [4] are fixed on the wiring board [3], comprise magnetic cylinder [6] and external coil [7] in outer ring [4], and are provided with the annular working air gap; Inner ring [5] is made up of the lens bracket [8] of support lens assembly [2] and the Inside coil [9] that is wound on the lens bracket [8]; Inner ring [5] is embedded in outer ring [4] by elastic support structure and flexible guide frame, and Inside coil [9] is arranged in the working gas gap of outer ring [4], constitutes focusing motor [a 11] structure with this;
Also be provided with a motor controller [10] on the wiring board [3], Inside coil [9] and external coil [7] via line plate [3] are electrically connected with motor controller [10] output terminal respectively, motor controller [10] output DC produces reverse each other magnetic field between outer ring [4] and inner ring [5], and flexible by the size generation electric power driving inner ring [5] and the lens assembly [2] of control output DC.
2, automatic focusing camera module according to claim 1 is characterized in that: described Inside coil [9] is identical with the coiling direction of external coil [7]; Inside coil [9] tail end is connected with the tail end of external coil [7], and via line plate [3] ground connection; Then as the control electric signal input end, via line plate [3] is connected with the positive-negative output end of motor controller [10] respectively the head end of Inside coil [9] and external coil [7], feeds opposite polarity electric current.
3, automatic focusing camera module according to claim 1 is characterized in that: also be provided with connector [12] on the described wiring board [3], the connector [12] on image sensor [1], the equal via line plate [3] of motor controller [10] is connected with peripherals.
4, automatic focusing camera module according to claim 1, it is characterized in that: described elastic support structure is made of preceding reed group and back reed group, circumferential uniform being supported between inner ring [5] front side and outer ring [4] of each reed [13] in the preceding reed group, circumferential uniform being supported between inner ring [5] rear side and outer ring [4] of each reed [14] in the back reed group.
5, automatic focusing camera module according to claim 1, it is characterized in that: lens bracket [8] week of described inner ring [5] upwards is provided with guiding rib, correspondence is provided with gathering sill on the inner edge of outer ring [4], and guiding rib cooperates the flexible guide frame of formation with gathering sill.
6, automatic focusing camera module according to claim 1 is characterized in that: described motor controller [10] is the current controller of the control program that writes direct.
7, automatic focusing camera module according to claim 1 is characterized in that: described image sensor [1] is the COMS image sensor.
8, automatic focusing camera module according to claim 1 is characterized in that: described image sensor [1] is the CCD image sensor.
9, automatic focusing camera module according to claim 1 is characterized in that: described wiring board [3] is the FPCB flexible circuit board.
10, automatic focusing camera module according to claim 1 is characterized in that: described wiring board [3] is the PCB printed-wiring board (PWB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620070746.0U CN2909319Y (en) | 2006-03-22 | 2006-03-22 | Automatic focusing camera lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620070746.0U CN2909319Y (en) | 2006-03-22 | 2006-03-22 | Automatic focusing camera lens module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2909319Y true CN2909319Y (en) | 2007-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200620070746.0U Expired - Fee Related CN2909319Y (en) | 2006-03-22 | 2006-03-22 | Automatic focusing camera lens module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2909319Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749790A (en) * | 2011-04-22 | 2012-10-24 | 易模塑科技（深圳）有限公司 | Automatic zoom lens module |
| CN102866563A (en) * | 2011-05-12 | 2013-01-09 | 弗莱克斯电子有限责任公司 | Camera module with threadless lens barrel engagement design |
| CN101990755B (en) * | 2008-05-14 | 2013-02-20 | Hysonic株式公司 | Photography device with anti-shake function |
| CN107820168A (en) * | 2017-11-17 | 2018-03-20 | 瑞声科技（南京）有限公司 | The control method and electronic equipment of electronic equipment |
| CN107911591A (en) * | 2017-12-11 | 2018-04-13 | 广东欧珀移动通信有限公司 | A kind of camera module, electronic device and its control method |
| US10317779B2 (en) | 2016-08-16 | 2019-06-11 | Microsoft Technology Licensing, Llc | Imaging apparatus |
| US11523034B2 (en) | 2016-02-10 | 2022-12-06 | Microsoft Technology Licensing, Llc | Imaging apparatus |
-
2006
- 2006-03-22 CN CN200620070746.0U patent/CN2909319Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990755B (en) * | 2008-05-14 | 2013-02-20 | Hysonic株式公司 | Photography device with anti-shake function |
| CN102749790A (en) * | 2011-04-22 | 2012-10-24 | 易模塑科技（深圳）有限公司 | Automatic zoom lens module |
| CN102866563A (en) * | 2011-05-12 | 2013-01-09 | 弗莱克斯电子有限责任公司 | Camera module with threadless lens barrel engagement design |
| US9028159B2 (en) | 2011-05-12 | 2015-05-12 | Nan Chang O-Film Optoelectronics Technology Ltd | Camera module with threadless lens barrel engagement design |
| CN102866563B (en) * | 2011-05-12 | 2015-12-02 | 南昌欧菲光电技术有限公司 | There is the camera module without screw thread lens barrel bond layout |
| US11523034B2 (en) | 2016-02-10 | 2022-12-06 | Microsoft Technology Licensing, Llc | Imaging apparatus |
| US10317779B2 (en) | 2016-08-16 | 2019-06-11 | Microsoft Technology Licensing, Llc | Imaging apparatus |
| CN107820168A (en) * | 2017-11-17 | 2018-03-20 | 瑞声科技（南京）有限公司 | The control method and electronic equipment of electronic equipment |
| CN107911591A (en) * | 2017-12-11 | 2018-04-13 | 广东欧珀移动通信有限公司 | A kind of camera module, electronic device and its control method |
| CN107911591B (en) * | 2017-12-11 | 2020-03-31 | Oppo广东移动通信有限公司 | Camera module, electronic device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070606 |