CN2904026Y - Camera focusing device for cell phone - Google Patents
Camera focusing device for cell phone Download PDFInfo
- Publication number
- CN2904026Y CN2904026Y CN200620025967.6U CN200620025967U CN2904026Y CN 2904026 Y CN2904026 Y CN 2904026Y CN 200620025967 U CN200620025967 U CN 200620025967U CN 2904026 Y CN2904026 Y CN 2904026Y
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- lens barrel
- urceolus
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Abstract
A camera focus adjustment device for a handset comprises a flexible circuit board, a sensor, a infrared filter, a base, four coils, a barrel, a megnet holder, six magnets, a upper cover and two Hall components. For the camera focus adjustment device for a handset provided by the utility model, a drive unit is formed by the magnets and coils, which are relatively set, and the Holl components set throughly on the exterior barrel wall of the base, a feed unit is formed by the barrel, which works with the thread of the interior barrel of the base, the magnet holder and the magnets. The feed unit produces an electromagnetic force between the coils and the magnets by taking advantage of the current of the level connection coils from the Hall components, accordingly making the magnets, the magnet holder and the barrel rotate together and simultaneously move along the optical axis resulting in automatically finishing the action of focus adjusting. The device has a simple structure, high drive accuracy and efficiency, a low energy consumption, can realize fine adjustment, and has the features of small optical axial and radial size, thereby the device is very suitable to used in a handset with a camera fuction.
Description
Technical field
The utility model relates to a kind of focus control, particularly relates to a kind of lens barrel that can make and moves and finish the photographic camera focusing device for mobile phones of automatic focusing action along optical axis direction.
Background technology
At present, the continuous increase and the trend toward miniaturization that the mobile phone functional diversities are required along with the continuous development of mobile phones design technology and user, have one of basic function that camera function become mobile phone, therefore must on mobile phone, install have high transmission accuracy, high transmission efficiency, energy consumption are low, can fine setting and the focus control of characteristics such as optical axis direction and radial dimension be little.Focus control is made up of stepper motor and feed mechanism usually.TOHKEMY 2002-51524 patent gazette discloses a kind of focus control.Fig. 1 is the focus control part-structure cut-open view of this prior art.As shown in Figure 1, hollow step motor on this focus control is to utilize magnet 31s as rotor to go up outwards to protrude the cotter way that forms on the pin 80 that forms and lens barrel 71 lower surfaces to combine, the lens barrel retainer 70 that is arranged on an end of motor and has an internal thread then with have externally threaded lens barrel 71 formation feed mechanisms.When core motor rotates, epitrochanterian pin 80 drives lens barrel 71 and is rotated by combining with cotter way on the lens barrel 71, thereby make lens barrel 71 when optical axis direction moves, finish the focusing action, lens barrel need reach the outside of main body in this process, gets back in the main body after the release of waiting to focus.But, there is following point in the focus control of this prior art: as mentioned above, because the transmission on this focus control between motor and the lens barrel 71 is to finish by the cotter way on epitrochanterian pin 80 and the lens barrel 71, unavoidably like this can produce drive gap, thereby reduction transmission accuracy, and sell 80 and cotter way also can be because of the caused by relative motion friction, and then reduce transmission efficiency.In addition, the motor upper rotor part is that the optical axis direction of magnet and constraint radially are to realize by the confinement ring that is looped around on the magnet outer peripheral face, because the outer peripheral face that this confinement ring is positioned at magnet is the maximum arm of force place of rotor, frictional resistance that so undoubtedly can expanded motor, thereby reduction transmission efficiency.In addition, the motor in this focus control is a stepper motor, and its step pitch determines the distance that lens barrel 71 moves along optical axis direction, thereby can not carry out the minor adjustments less than step pitch.Feed mechanism in the particularly this focus control is an end that is arranged on motor along optical axis direction, and lens barrel need reach outside the main body when focusing, and need be used to be provided with the supporter of motor, thereby the optical axis direction of whole device and radial dimension are excessive, so, be unsuitable on mobile phone, using.
Summary of the invention
In order to address the above problem, the purpose of this utility model be to provide a kind of simple in structure, transmission accuracy is high and transmission efficiency is high, have the little photographic camera focusing device for mobile phones of fine adjustment function and optical axis direction and radial dimension.
In order to achieve the above object, the photographic camera focusing device for mobile phones that provides of the utility model comprises: flexible PCB, sensor, infrared fileter, base, 4 coils, lens barrel, magnet retainer, 6 magnet, loam cake and 2 Hall elements; Wherein flexible PCB is installed on the main circuit board that is positioned at mobile phone inside; Sensor is arranged on surface one side of flexible PCB; The base that is arranged on flexible PCB top is the double tubular that links to each other by the bottom surface, wherein the height of urceolus is greater than the height of inner core, and be formed with internal thread on the inner peripheral surface of inner core, bottom center's parts cave inward and are formed with a first party connected in star that is used to hold sensor, cave inward from the top of first party connected in star and to form another and be used to hold the second party connected in star of infrared fileter, and the bottom center position of inner core is formed with a rectangle light inlet window, and the circumferential wall of urceolus middle part along the circumferential direction is formed with 2 rectangular openings of 90 ° apart; Infrared fileter is arranged in the second party connected in star of light inlet window bottom on the base, and it can close light inlet window, and with the sensor standoff distance side disposed thereon; 4 coils all are the square shape shape that has radian, and the inner peripheral surface radian of urceolus is identical on its radian and the base, and is set in qually spaced on the inner peripheral surface of urceolus, and 2 relative coils become one group; The inner lens barrel that can place the multi-disc eyeglass is inverted cylindric, the internal diameter of inner core is identical on its external diameter and the base, be formed with the external thread that can match on the outer peripheral face with the internal thread of inner core on the base, the end face centre is formed with a circular light hole, outwards protrude around the light hole and be formed with a bulge loop, the outside of bulge loop then along the circumferential direction is formed with 6 cylindrical protrusions that equidistantly distribute; The magnet retainer is the straw hat shape, the inner circumferential surface diameter is greater than the external diameter of inner core on the base, the external diameter at its edge is then less than the inner surface diameter of coil, and the end face centre is formed with the identical circular hole of external diameter of bulge loop on a diameter and the lens barrel, then be formed with around the circular hole 6 respectively with lens barrel on the position and the big or small corresponding small sircle hole of 6 projectioies, and the end face by separately is rigidly connected between itself and lens barrel; Radially all curved sheet of 6 magnet of magnetic, every pairing central angle is 60 °, and the inner peripheral surface diameter is identical with the outer peripheral face diameter of magnet retainer, and is bonded on the outer peripheral face of magnet retainer in the mode that N, the S utmost point replace; The end face centre of loam cake is formed with a printing opacity circular hole, and the external diameter of urceolus is identical on the diameter of inner peripheral surface and the base, thereby can be fixed on the outside of base; 2 Hall elements then connect on the urceolus that is arranged on base in 2 rectangular openings of 90 °, and the center line of each Hall element forms 15 ° of angles with the center line of 2 adjacent coil the same side axial components respectively.
The height of described lens barrel, magnet retainer and magnet is all less than the height of urceolus on the base, thereby moves along optical axis direction in the former space that can form between loam cake and base.
Described base and lens barrel are formed by the insulating material injection moulding, and the magnet retainer is made by the permeability magnetic material plate stamping, and magnet is then made by terres rares high energy product magnetic material sintering.
The photographic camera focusing device for mobile phones that the utility model provides is to constitute drive division by the Hall element that the magnet that is oppositely arranged and coil and perforation are arranged on the base outer tube wall, and constitute feeding portion by lens barrel, magnet retainer and magnet with the inner core threaded engagement of base, its utilize Hall element output the level closing coil electric current and between coil and magnet, produce electromagnetic force, move thereby move and finish automatically focusing along optical axis direction when magnet, magnet retainer and lens barrel are together rotated.Because the feeding portion in this device is combined into one with lens barrel, thereby transmission mechanism-free between drive division and the lens barrel, thus there are not relative friction and drive gap, so simple in structure, transmission accuracy and transmission efficiency height and energy consumption are low.In addition, the lens barrel in the feeding portion can stop on the optional position of optical axis direction, thereby can realize fine adjustment.In addition, lens barrel can not reach outside the loam cake when focusing, thereby can dwindle the size of optical axis direction greatly, and base then has the supporting role and the shell effect of moving part simultaneously, so can dwindle radial dimension, thereby be fit to very much be applied in the mobile phone that has camera function.
Description of drawings
Fig. 1 is the focus control part-structure cut-open view of prior art.
The photographic camera focusing device for mobile phones STRUCTURE DECOMPOSITION stereographic map that Fig. 2 provides for the utility model.
The photographic camera focusing device for mobile phones vertical structure sectional block diagram that Fig. 3 provides for the utility model.
The photographic camera focusing device for mobile phones vertical structure cut-open view that Fig. 4 provides for the utility model.
The photographic camera focusing device for mobile phones external structure stereographic map that Fig. 5 provides for the utility model.
Base, lens barrel, magnet retainer, magnet and coil assembled state vertical structure sectional block diagram in the photographic camera focusing device for mobile phones that Fig. 6 provides for the utility model.
The inner outside base exterior structural perspective that Hall element is installed of lens barrel, magnet retainer, magnet and coil that is equipped with in the photographic camera focusing device for mobile phones that Fig. 7 provides for the utility model.
Drive division transversary cut-open view in the photographic camera focusing device for mobile phones that Fig. 8 provides for the utility model.
Drive division transversary cut-open view during first group of coil input reverse voltage in the photographic camera focusing device for mobile phones that Fig. 9 provides for the utility model.
Figure 10 is the 30 ° of rear drive portion transversary cut-open views of magnet rotation among Fig. 9.
Drive division transversary cut-open view when second group of coil imported forward voltage in the photographic camera focusing device for mobile phones that Figure 11 the utility model provides.
Figure 12 is the 60 ° of rear drive portion transversary cut-open views of magnet rotation among Figure 11.
Drive division transversary cut-open view when first group of coil imported forward voltage in the photographic camera focusing device for mobile phones that Figure 13 the utility model provides.
Figure 14 is the magnet half-twist rear drive portion transversary cut-open view among Figure 13.
Drive division transversary cut-open view during second group of coil input reverse voltage in the photographic camera focusing device for mobile phones that Figure 15 provides for the utility model.
Figure 16 is the 120 ° of rear drive portion transversary cut-open views of magnet rotation among Figure 15.
Figure 17 is respectively torque, the drive division torque that induction electromotive force in magnetic flux in the 1st hall element output signal in the photographic camera focusing device for mobile phones that the utility model provides, the 2nd hall element output signal, the 1st group of coil current, the 2nd group of coil current, the 1st and the 2nd group of coil, the 1st and the 2nd group of coil, the 1st and the 2nd group of coil produce and input voltage waveform figure in the coil when finely tuning.
Embodiment
Below in conjunction with drawings and Examples the photographic camera focusing device for mobile phones that the utility model provides is elaborated.To shown in Figure 7, the photographic camera focusing device for mobile phones that the utility model provides comprises flexible PCB 1, sensor 2, infrared fileter 3,4,4 coils 5 of base, lens barrel 6,7,6 magnet 8 of magnet retainer, loam cake 9 and 2 Hall elements 10 as Fig. 1; Wherein flexible PCB 1 is installed on the main circuit board that is positioned at mobile phone inside; Sensor 2 is arranged on surface one side of flexible PCB 1; The base 4 that is arranged on flexible PCB 1 top is the double tubular that links to each other by the bottom surface, wherein the height of urceolus 11 is greater than the height of inner core 12, and be formed with internal thread on the inner peripheral surface of inner core 12, bottom center's parts cave inward and are formed with a first party connected in star that is used to hold sensor 2, cave inward from the top of first party connected in star and to form another and be used to hold the second party connected in star of infrared fileter 3, and the bottom center position of inner core 12 is formed with a rectangle light inlet window 13, and the circumferential wall of urceolus 11 middle part along the circumferential direction is formed with 2 rectangular openings 14 of 90 ° apart; Infrared fileter 3 is arranged in the second party connected in star of light inlet window 13 bottoms on the base 4, and it can close light inlet window 13, and with sensor 2 standoff distances side disposed thereon; 4 coils 5 all are the square shape shape that has radian, and the inner peripheral surface radian of urceolus 11 is identical on its radian and the base 4, and is set in qually spaced on the inner peripheral surface of urceolus 11, and 2 relative coils 5 become one group; The inner lens barrel 6 that can place the multi-disc eyeglass is inverted cylindric, the internal diameter of inner core 12 is identical on its external diameter and the base 4, be formed with the external thread that can match on the outer peripheral face with the internal thread of inner core 12 on the base 4, the end face centre is formed with a circular light hole 15, outwards protrude around the light hole 15 and be formed with a bulge loop 16, the outside of bulge loop 16 then along the circumferential direction is formed with 6 cylindrical protrusions 17 that equidistantly distribute; Magnet retainer 7 is the straw hat shape, the inner circumferential surface diameter is greater than the external diameter of inner core 12 on the base 4, the external diameter at its edge is then less than coil 5 inner surface diameter that are arranged on urceolus 11 inner peripheral surfaces, and the end face centre is formed with the identical circular hole 18 of external diameter of bulge loop 16 on a diameter and the lens barrel 6, then be formed with around the circular hole 18 6 respectively with lens barrel 6 on the position and the big or small corresponding small sircle hole 19 of 6 projectioies 17, and 6 of itself and the lens barrels end face by separately is rigidly connected; Radially all curved sheet of 6 magnet 8 of magnetic, every pairing central angle is 60 °, and the inner peripheral surface diameter is identical with the outer peripheral face diameter of magnet retainer 7, and is bonded on the outer peripheral face of magnet retainer 7 in the mode that N, the S utmost point replace; The end face centre of loam cake 9 is formed with a printing opacity circular hole 20, and the external diameter of urceolus 11 is identical on the diameter of inner peripheral surface and the base 4, thereby can be fixed on the outside of base 4; 2 Hall elements 10 then perforation are arranged on the urceolus 11 of base 4 in 2 rectangular openings 14 of 90 °, and the center line of each Hall element 10 forms 15 ° of angles with the center line of 2 adjacent coils, 5 the same side axial components respectively.The height of described lens barrel 6, magnet retainer 7 and magnet 8 is all less than the height of urceolus 11 on the base 4, thereby moves along optical axis direction in the former space that can form between loam cake 9 and base 4.Described base 4 and lens barrel 6 are formed by the insulating material injection moulding, and magnet retainer 7 is made by the permeability magnetic material plate stamping, and magnet 8 is then made by terres rares high energy product magnetic material sintering.Can with in 2 Hall elements 10 any to be set at Hall element 1 be H 1, be H2 and another is set at Hall element 2; In addition, the coil 5 and the coil 5 relative with it that will comprise Hall element 1 are made as the 1st group of loop A, A ', and all the other 2 relative coils 5 then are made as the 2nd group of coil B, B '.Shown in Fig. 7 to 17, when the user need take a picture with the photographic means on the mobile phone, it at first need be pressed the Photographing Mode options button on the mobile phone and enter Photographing Mode, press shutter key then and begin to enter automatic focusing program, at this moment, as Fig. 9 and shown in Figure 17, the equal output low level of H1 and H2, the 1st group of loop A, turn-on reversal electric current among the A ', and the 2nd group of coil B, then there is not input among the B ', at this moment the 1st group of loop A, to produce electromagnetic force between A ' and the magnet 8, thereby make magnet 8 rotate 30 ° and become state shown in Figure 10 in the counterclockwise direction, because magnet 8 is combined into one with magnet retainer 7 and lens barrel 6, thereby lens barrel 6 will move up or down at the inner core 12 outer peripheral face upper edge optical axis directions of base 4.Then, as Figure 11 and shown in Figure 17, the H1 output low level, H2 exports high level, connect forward current among the 2nd group of coil B, the B ', the 1st group of loop A, A ' then do not have input, at this moment, to produce electromagnetic force between the 2nd group of coil B, B ' and the magnet 8, thereby make magnet 8 continue 30 ° of rotations in the counterclockwise direction and become state shown in Figure 12.Subsequently, as Figure 13 and shown in Figure 17, H1 and H2 all export high level, connect forward current among the 1st group of loop A, the A ', then there is not input among the 2nd group of coil B, the B ', at this moment will produce electromagnetic force between the 1st group of loop A, A ' and magnet 8, thereby make magnet 8 continue 30 ° of rotations more in the counterclockwise direction and become state shown in Figure 14.Afterwards, as Figure 15 and shown in Figure 17, H1 exports high level, the H2 output low level, turn-on reversal electric current among the 2nd group of coil B, the B ', then do not have input among the 1st group of loop A, the A ', at this moment will produce electromagnetic force between the 2nd group of coil B, B ' and the magnet 8, thereby make magnet 8 be further rotated 30 ° and become state shown in Figure 16 in the counterclockwise direction again.Carry out above-mentioned 4 steps repeatedly magnet 8 is rotated in the counterclockwise direction continuously, finish the focusing action automatically until focus control.In addition,, only need the former opposite signal that is input into the 1st group of loop A, A ' signal is input into the 2nd group of coil B, B ', the former opposite signal that is input into the 2nd group of coil B, B ' signal is input into the 1st group of loop A, A ' gets final product if want reverse rotation magnet 8.In addition, if want to make magnet 8 to carry out the minute angle rotation, shown in last oscillogram among Figure 17, can make the 1st group of loop A, A ' and the 2nd group of middle voltage signal of connecting of coil B, B ' into pulse voltage, so just can make magnet 8 rotate minute angle, thereby reach the purpose of fine setting corresponding to each potential pulse.
Claims (3)
1, a kind of photographic camera focusing device for mobile phones is characterized in that: described photographic camera focusing device for mobile phones comprises flexible PCB (1), sensor (2), infrared fileter (3), base (4), 4 coils (5), lens barrel (6), magnet retainer (7), 6 magnet (8), loam cake (9) and 2 Hall elements (10); Wherein flexible PCB (1) is installed on the main circuit board that is positioned at mobile phone inside; Sensor (2) is arranged on surface one side of flexible PCB (1); The base (4) that is arranged on flexible PCB (1) top is the double tubular that links to each other by the bottom surface, wherein the height of urceolus (11) is greater than the height of inner core (12), and be formed with internal thread on the inner peripheral surface of inner core (12), bottom center's parts cave inward and are formed with a first party connected in star that is used to hold sensor (2), cave inward from the top of first party connected in star and to form another and be used to hold the second party connected in star of infrared fileter (3), and the bottom center position of inner core (12) is formed with a rectangle light inlet window (13), and the circumferential wall of urceolus (11) middle part along the circumferential direction is formed with 2 rectangular openings (14) of 90 ° apart; Infrared fileter (3) is arranged on base (4) and goes up in the second party connected in star of light inlet window (13) bottom, and it can close light inlet window (13), and with sensor (2) standoff distance side disposed thereon; 4 coils (5) all are the square shape shape that has radian, and its radian is identical with the inner peripheral surface radian that base (4) is gone up urceolus (11), and is set in qually spaced on the inner peripheral surface of urceolus (11), and relative 2 coils (5) become one group; The inner lens barrel (6) that can place the multi-disc eyeglass is inverted cylindric, its external diameter is identical with the internal diameter that base (4) is gone up inner core (12), be formed with the external thread that can match on the outer peripheral face with the internal thread of the last inner core (12) of base (4), the end face centre is formed with a circular light hole (15), outwards protrude around the light hole (15) and be formed with a bulge loop (16), the outside of bulge loop (16) then along the circumferential direction is formed with 6 cylindrical protrusions (17) that equidistantly distribute; Magnet retainer (7) is the straw hat shape, the inner circumferential surface diameter is gone up the external diameter of inner core (12) greater than base (4), the external diameter at its edge is then less than coil (5) inner surface diameter that is arranged on urceolus (11) inner peripheral surface, and the end face centre is formed with the identical circular hole (18) of external diameter that a diameter and lens barrel (6) are gone up bulge loop (16), then be formed with around the circular hole (18) 6 respectively with the position and the big or small corresponding small sircle hole (19) of last 6 projectioies of lens barrel (6) (17), and the end face by separately is rigidly connected between itself and lens barrel (6); Radially all curved sheet of 6 magnet (8) of magnetic, the central angle of every correspondence is 60 °, and the inner peripheral surface diameter is identical with the outer peripheral face diameter of magnet retainer (7), and is bonded on the outer peripheral face of magnet retainer (7) in the mode that N, the S utmost point replace; The end face centre of loam cake (9) is formed with a printing opacity circular hole (20), and the diameter of inner peripheral surface is identical with the external diameter of the last urceolus (11) of base (4), thereby can be fixed on the outside of base (4); 2 Hall elements (10) then connect the urceolus (11) that is arranged on base (4) and go up in 2 rectangular openings (14) of 90 °, and the center line of each Hall element (10) forms 15 ° of angles with the center line of 2 adjacent coils (5) the same side axial component respectively.
2, photographic camera focusing device for mobile phones according to claim 1, it is characterized in that: the height of described lens barrel (6), magnet retainer (7) and magnet (8) is all gone up the height of urceolus (11) less than base (4), thereby moves along optical axis direction in the former space that can form between loam cake (9) and base (4).
3, photographic camera focusing device for mobile phones according to claim 1, it is characterized in that: described base (4) and lens barrel (6) are formed by the insulating material injection moulding, magnet retainer (7) is made by the permeability magnetic material plate stamping, and magnet (8) is then made by terres rares high energy product magnetic material sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620025967.6U CN2904026Y (en) | 2006-04-30 | 2006-04-30 | Camera focusing device for cell phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620025967.6U CN2904026Y (en) | 2006-04-30 | 2006-04-30 | Camera focusing device for cell phone |
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| Publication Number | Publication Date |
|---|---|
| CN2904026Y true CN2904026Y (en) | 2007-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200620025967.6U Expired - Fee Related CN2904026Y (en) | 2006-04-30 | 2006-04-30 | Camera focusing device for cell phone |
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| CN (1) | CN2904026Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419322B (en) * | 2007-10-22 | 2011-06-22 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| CN102262279A (en) * | 2010-05-24 | 2011-11-30 | 思考电机（上海）有限公司 | Lens driving device, autofocus camera and camera-equipped mobile terminal |
| TWI411861B (en) * | 2007-11-09 | 2013-10-11 | Hon Hai Prec Ind Co Ltd | Lens module |
| CN104280856A (en) * | 2011-06-10 | 2015-01-14 | 思考电机（上海）有限公司 | Lens drive device, autofocus camera, and mobile terminal with camera |
| CN108989629A (en) * | 2017-06-02 | 2018-12-11 | 宁波舜宇光电信息有限公司 | Driving assembly and camera module and its electronic equipment |
-
2006
- 2006-04-30 CN CN200620025967.6U patent/CN2904026Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419322B (en) * | 2007-10-22 | 2011-06-22 | 鸿富锦精密工业（深圳）有限公司 | Lens module |
| TWI411861B (en) * | 2007-11-09 | 2013-10-11 | Hon Hai Prec Ind Co Ltd | Lens module |
| CN102262279A (en) * | 2010-05-24 | 2011-11-30 | 思考电机（上海）有限公司 | Lens driving device, autofocus camera and camera-equipped mobile terminal |
| CN102262279B (en) * | 2010-05-24 | 2013-05-15 | 思考电机（上海）有限公司 | Lens driving device, autofocus camera and mobile terminal |
| CN104280856A (en) * | 2011-06-10 | 2015-01-14 | 思考电机（上海）有限公司 | Lens drive device, autofocus camera, and mobile terminal with camera |
| CN104280856B (en) * | 2011-06-10 | 2017-07-07 | 新思考电机有限公司 | The mobile terminal of lens driver, auto-focusing camera and having camera |
| CN108989629A (en) * | 2017-06-02 | 2018-12-11 | 宁波舜宇光电信息有限公司 | Driving assembly and camera module and its electronic equipment |
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| 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: 20070523 |